Blog post
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2021/01/26
Help for teaching statistical computing skills
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2021/01/23
How to run SAS inside an RMarkdown file
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2021/01/23
How to save RMarkdown output in the results folder
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2021/01/06
I have too many github repositories
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2020/12/12
How can you learn R?
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2020/11/21
How I use R Markdown to write research papers
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2020/11/20
Advice for a beginner Bayesian
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2020/10/12
Basic notation for survival or time-to-event analyses
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2020/10/01
How I got started in Evidence-Based Medicine
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2020/09/01
Research interests
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2020/08/09
Biography for a research grant
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2020/06/11
How to Call B.S. on Big Data.
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2020/05/12
The Bioconductor library of packages for R
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2020/04/30
Reading text files
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2020/04/27
An incomplete list of data repositories
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2020/04/15
Codes for COVID-19 in the electronic health record
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2020/03/15
Blog post: Different map projections
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2020/03/11
Blog post: An example of a poor color choice
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2020/03/10
Blog post: UMKC big data and data science initiatives
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2020/03/02
Blog post: Smart quotes, em dashes, and en dashes
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2020/02/27
Blog post: Proposed talk on secondary data analysis
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2020/02/04
Blog post: Data collection in a research methods class
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2020/02/04
Blog post: Data visualizaiton as art
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2020/01/29
Blog post: Printing R Markdown output to png files
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2020/01/26
Artist wanted, here are the details
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2020/01/23
Blog post: Celebrating the failures of medical research using a graphic novel format
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2020/01/17
Blog post: Imbalanced sample sizes in the Fisher Exact test
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2020/01/07
Blog post: Identifying and manipulating non-breaking spaces
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2019/05/15
PMean: Finding me on the Internet
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2019/05/02
PMean: Several Python resources
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2019/04/25
PMean: Writing the methods section of a research paper
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2019/04/17
Recommendation: What would Florence Nightingale make of big data?
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2019/04/01
Recommendation: Ethical Practice in Data Mining
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2019/03/29
PMean: Writing the introduction section of a research thesis or dissertation
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2019/03/03
PMean: Slapping the word pilot on a failed study
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2019/02/15
PMean: Make a loud mistake
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2019/02/12
Another short biography
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2019/02/11
PMean: Finding those weird characters
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2019/01/23
PMean: Think positively - what has research done for us
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2019/01/15
PMean: Citing one of my web pages
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2019/01/14
Recommendation: Hints for designing effective questionnaires
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2018/11/11
PMean: Getting R to shut the heck up
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2018/10/30
PMean: Fighting SASism
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2018/09/21
PMean: What to do about claims of borderline statistical significance
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2018/09/19
PMean: What I did in the last twelve months
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2018/09/10
PMean: Super Pi, a group to teach cluster computing using the Raspberry Pi
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2018/09/04
PMean: Python, Raspberry Pi, and cluster computing
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2018/09/04
Recommendation: Python bindings for MPI
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2018/08/27
PMean: What day is it in my R program?
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2018/08/17
PMean: Business essentials for starting an independent consulting practice
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2018/08/13
PMean: The Dark Side of Data Science
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2018/07/24
PMean: A simple structure for documentation
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2018/07/20
PMean: Grading rubric for computer assignments
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2018/07/10
Recommendation: How to be more effective in your professional life
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2018/07/07
PMean: How much missingness can you tolerate?
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2018/07/03
Recommendation: Section 508 CoP: PDF Accessibility – Part One
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2018/06/24
PMean: What goes into a contract for a consultation
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2018/06/09
PMean: Big data groups at UMKC and UM/Columbia
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2018/05/17
PMean: What are we doing to justify all that time we’re budgeting?
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2018/05/13
PMean: Some interesting quality improvement resources
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2018/05/10
PMean: Draft policy on statistical support for research
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2018/05/01
PMean: Learning more about SAS
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2018/04/11
Recommendation: Definitions of Criteria and Considerations for Research Project Grant Critiques
-
2018/04/03
Recommendation: Guidelines for estimating biostatistician effort and resources on grants
-
2018/04/03
Recommendation: Statistical and Machine Learning forecasting methods: Concerns and ways forward
-
2018/04/02
PMean: Developing an interdisciplinary research program
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2018/04/02
PMean: My research interests
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2018/04/02
PMean: My research interests, one page limit
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2018/04/02
Pmean: My teaching and research statement
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2018/04/02
PMean: My teaching approach
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2018/04/02
PMean: My teaching interests, one page limit
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2018/04/01
Recommendation: To combat physician burnout and improve care, fix the electronic health record
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2018/03/29
PMean: Starting a heron-i2b2-analytics repository
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2018/03/28
PMean: And the least important variable is…
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2018/03/28
PMean: Recommended format for homework assignments
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2018/03/28
PMean: Using the transpose procedure in SAS
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2018/03/27
PMean: Next stop - BMC Medical Informatics and Decision Making
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2018/03/25
PMean: Two articles published in the Encyclopedia of Big Data
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2018/03/23
PMean: Exporting a graph in SAS
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2018/03/23
PMean: Tests of equivalence and non-inferiority
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2018/03/23
PMean: They want a short biography from me
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2018/03/22
PMean: Mining the electronic health record, why and how
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2018/03/22
PMean: Peer grading in Introduction to R - SPSS - SAS
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2018/03/21
PMean: Changes to the Introduction to R - SAS - and SPSS classes
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2017/12/15
Recommendation: No more rainbows
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2017/11/08
Recommendation: Writing about numbers
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2017/04/07
PMean: Obnoxious use of red text in RStudio
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2017/03/23
Recommendation: Medicare Claims Synthetic Public Use Files (SynPUFs)
-
2017/02/23
Recommendation: Text Mining with R
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2017/02/02
Recommendation: R and SQL Server 2016
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2016/10/20
Recommendation: A Tutorial on Loops in R
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2016/10/18
Recommendation: Oracle Dates and Times
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2016/09/23
PMean: By the skin of my teeth
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2016/08/25
Recommendation: The FAIR Guiding Principles for scientific data management and stewardship
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2016/08/15
Recommendation: 10 Easy Steps to a Complete Understanding of SQL
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2016/08/08
PMean: Changing the font size in R
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2016/08/08
PMean: Changing the font size in RStudio
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2016/08/03
Recommendation: Enrichment design studies should enhance signals of effectiveness.
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2016/08/03
Recommendation: The Importance of Reproducible Research in High-Throughput Biology
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2016/04/18
Recommendation: Interpretation of Changes in Health-related Quality of Life: The Remarkable Universality of Half a Standard Deviation
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2016/04/10
PMean: Some open source Kaplan Meier curves
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2016/03/30
Recommendation: Reporting and methodological quality of sample size calculations in cluster randomized trials could be improved: a review
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2016/03/08
Recommendation: PLOS ONE 2015 Reviewer Thank You
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2016/02/29
Recommendation: Selection of controls in case-control studies
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2016/02/05
PMean: Calculating power for a test of association in a two by two table
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2016/02/05
PMean: Simulating power for a test of association in a two by two table
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2016/01/13
PMean: My book chapter on R
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2015/12/02
PMean: A book review of my first book
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2015/12/02
Recommendation: Safeguarding Patients in Clinical Trials with High Mortality Rates
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2015/11/16
PMean: My Google Scholar profile
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2015/10/13
PMean: How many research subjects…
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2015/06/30
Recommendation: This is Statistics promotional toolkit
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2015/06/03
PMean: My research contributions to Evidence Based Medicine
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2015/06/03
PMean: My research contributions to patient accrual models
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2015/05/30
PMean: My research contributions to numerical accuracy
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2015/05/30
PMean: My research contributions to reproductive toxicology
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2015/05/27
PMean: I am now a number in the ORCID database
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2015/05/26
Recommendation: Developing Grant Proposals: Guidelines for Statisticians Collaborating Under Limited Resources
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2015/04/16
Recommendation: Restoring invisible and abandoned trials
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2015/04/12
PMean: Equations using MathType
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2015/04/03
PMean: Examining relationships in R
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2015/01/15
Recommendation: The answer is 17 years, what is the question. Understanding time lags in translational research
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2014/12/23
Recommendation: Report on Survey Participation Refusals
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2014/11/01
PMean: Cox regression in R
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2014/11/01
PMean: More Kaplan-Meier curves in R
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2014/10/31
PMean: Kaplan-Meier curves in R
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2014/08/13
Recommendation: Sample size of 12 per group rule of thumb for a pilot study
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2014/07/24
PMean: What is the probability of a probability of one
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2014/07/22
PMean: An example of a simple sample size justification
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2014/05/31
PMean: What should go into a data codebook
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2014/05/03
PMean: Using BUGS within the R programming environment
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2014/05/01
Recommendation: Not all scientific studies are created equal
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2014/04/14
PMean: Using statistical design principles to plan a Monte Carlo analysis – part 2
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2014/04/06
Recommendation: Predicting clinical trial results based on announcements of interim analyses
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2014/03/12
PMean: Estimating the efficiency of a completely randomized block design
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2014/03/05
Recommendation: foreach: Foreach looping construct for R
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2014/02/24
PMean: NIH is interested in big data
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2014/02/20
Recommendation: Why Coincidences, Miracles And Rare Events Happen Every Day.
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2014/01/29
Recommendation: Will 2015 be the Beginning of the End for SAS and SPSS?
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2014/01/15
PMean: Resources for a workshop in R
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2013/12/18
PMean: Sample size for comparing two diagnostic tests
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2013/12/10
PMean: Claims lacking specificity are meaningless
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2013/12/09
PMean: Is Possibility Theory better than Probability Theory?
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2013/12/04
PMean: The cost of a bad prediction
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2013/11/30
PMean: You can now register for an account on my blog.
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2013/11/29
PMean: Two questions you should always ask at the end of a consulting session
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2013/11/27
PMean: Blog is up and ready for testing
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2010/07/26
When should research in a given area end?
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2010/01/01
Lessons learned the hard way. Don’t …
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2010/01/01
My life so far, fails to meet expectations
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2010/01/01
What is a good surrogate measure for …
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2009/01/01
(Being updated)
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2009/01/01
A simple example of joint and …
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2009/01/01
A sportswriter tackles the Monty Hall problem
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2009/01/01
Acknowledging the …
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2009/01/01
Analyzing bad data
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2009/01/01
Are we statisticians gods?
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2009/01/01
Calculating NNT for …
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2009/01/01
Calculating NNT for infection rates
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2009/01/01
Calibrating information …
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2009/01/01
Can I stop this study?
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2009/01/01
Can I use you as a teaching example?
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2009/01/01
Changes in the adjusted hazard …
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2009/01/01
Data layout for an ROC curve
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2009/01/01
Developing a website logo
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2009/01/01
DNA binding image
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2009/01/01
Do multiple time points require …
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2009/01/01
Drawing simple mathematical graphs
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2009/01/01
Entering and analyzing data from a two by two table
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2009/01/01
Fewer than 10 events per variable
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2009/01/01
Five points or seven points on a …
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2009/01/01
Formula for multiple imputation
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2009/01/01
Generating multinomial random …
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2009/01/01
Getting a good cut-off …
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2009/01/01
Good papers for a journal club
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2009/01/01
I love to write
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2009/01/01
Institute of Medicine report on conflict …
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2009/01/01
Interpreting a negative autocorrelation
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2009/01/01
Is this a case-control design?
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2009/01/01
Jump start statistics for beginning …
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2009/01/01
Locating individual points on an ROC curve
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2009/01/01
Maybe Powerpoint isn’t so bad
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2009/01/01
New Bioinformatics degree
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2009/01/01
NYTimes advice on increasing website traffic
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2009/01/01
Power for a three arm experiment
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2009/01/01
Randomly generating simple math …
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2009/01/01
Rotating locations …
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2009/01/01
Short biography
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2009/01/01
Sneaking ineligible patients …
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2009/01/01
Standard error for an odds ratio
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2009/01/01
Tentative training schedule
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2009/01/01
The controversy over …
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2009/01/01
The first three steps in …
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2009/01/01
The perils of self-evaluation
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2009/01/01
The problem with being too sensitive
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2009/01/01
The surprisal matrix and …
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2009/01/01
Two business contacts
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2009/01/01
Use of Likert data with ANOVA
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2009/01/01
What is a normal probability plot?
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2009/01/01
What is the effect of an unmeasured covariate?
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2008/08/05
Reporting of adverse events
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2008/06/20
Bootstrap estimates of the standard error
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2008/06/17
Can I run a quantitative analysis on this data?
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2008/06/17
Running R on a web server
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2008/06/14
Criticism of random effects in a meta-analysis
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2008/06/14
Modeling a declining count variable
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2008/06/07
Eliciting a prior distribution for rejection/refusal rates
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2008/06/05
When does heterogeneity become a concern?
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2008/06/05
Why it's impossible to keep a resume current
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2008/05/27
How wide can you make a line of your web page?
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2008/05/09
A short biography that can be used as an introduction
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2008/05/08
Why does a Bayesian approach make sense for monitoring accrual?
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2008/05/07
Slipped deadlines and sample size shortfalls in a random sample of research studies
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2008/05/01
Monitoring refusals and exclusions in a clinical trial
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2008/04/23
Evidence Based Medicine for patients
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2008/04/14
A brief overview of instrumental variables
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2008/04/06
A simple math error
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2008/04/06
What does one-third of the way through a study mean?
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2008/04/04
Calculating statistics on whole numbers
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2008/04/03
An alternative to the p-value
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2008/04/03
Why we need case studies of research ethics in graphic novel format
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2008/03/29
What sort of statistical training is needed for basic scientists?
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2008/03/24
Presenting unadjusted and adjusted estimates side by side
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2008/03/24
When a client asks for a bad analysis
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2008/03/12
Moving content to a private site
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2008/03/12
Simplifying repeated measurements
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2008/03/05
Losing web pages in the mass of information
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2008/03/03
Calculating NNT for observational studies
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2008/02/25
Assessing the assumption of an exponential distribution
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2008/02/22
What is a critical value?
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2008/02/13
Multiple methods for computing percentiles
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2008/01/24
A simple example of a Kaplan-Meier curve
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2008/01/22
How do you analyze safety data
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2008/01/21
Finding only the important studies
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2008/01/18
What have you changed your mind about
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2008/01/09
Too much power and precision?
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2008/01/07
The post-modern assault on evidence-based medicine, part 3
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2008/01/04
What statistic should I use when?
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2008/01/03
Type III error
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2008/01/01
A misleading bar graph
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2008/01/01
A simple Bayesian model for
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2008/01/01
Business aspects of an independent …
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2008/01/01
Calculating statistics on whole numbers
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2008/01/01
Cytel software has developed a Poisson …
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2008/01/01
Defending Bonferroni
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2008/01/01
Difficulties in generalizing …
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2008/01/01
Directions to my new office
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2008/01/01
Distrust of a Bayesian …
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2008/01/01
Getting on and off various email lists
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2008/01/01
Hire me as a consultant
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2008/01/01
How do I fit a piecewise linear …
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2008/01/01
How many files …
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2008/01/01
How to report a one-tailed Fisher’s Exact Test
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2008/01/01
I hate bad research examples
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2008/01/01
Is there a scientific basis for EBM?
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2008/01/01
New format for articles, books, and websites
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2008/01/01
New personal pages
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2008/01/01
Nomination for the Kreamer Award
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2008/01/01
Pearson correlation and ordinal data
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2008/01/01
Plug for accrual research
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2008/01/01
Reading abstracts instead of the full paper
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2008/01/01
Reliable diagnosis of cataracts
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2008/01/01
Reliable diagnosis of cataracts
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2008/01/01
Should I abandon FrontPage?
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2008/01/01
Software for bootstrap and …
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2008/01/01
Statistics for Boards
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2008/01/01
Survey results from nine out of thirty six
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2008/01/01
Undeclared missing code leads …
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2008/01/01
What distribution does this data …
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2008/01/01
What does the FDA think about Bayesian …
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2008/01/01
Where can I learn more about Statistics?
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2008/01/01
Why does a Bayesian approach make …
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2007/12/28
Who wrote the law that mandates PowerPoint?
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2007/12/12
A Poisson regression model with interactions
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2007/11/28
No longer the sole statistician?
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2007/11/26
Testing for an increasing trend in a proportion
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2007/11/19
Tracking adverse events during kidney biopsy
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2007/11/19
What, exactly, is a child?
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2007/11/18
Tracking central line infections over time
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2007/11/17
My page names are too long
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2007/11/15
Monitoring adverse events during peritoneal dialysis
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2007/11/15
Monitoring adverse events during peritoneal dialysis
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2007/11/15
Stair step interpolation in R
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2007/11/12
NNH talk update
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2007/11/12
Reforming conflict of interest statements
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2007/11/11
Postlude to my Dallas talk
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2007/11/08
Grow up and learn how to do Statistics
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2007/11/06
Handout for diagnostic testing
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2007/10/18
New categories needed
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2007/10/18
Revising my definition section
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2007/10/10
Confidence interval for a rate
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2007/10/09
Case study of accrual in a clinical trial, part 2
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2007/10/05
Seminar on Open Access Journals
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2007/10/04
Educational and networking opportunities for statisticians in the Kansas City area
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2007/10/03
An alternate way of viewing accrual
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2007/10/01
Help for Statistics at UMKC and KUMC
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2007/09/27
Alphabetical bookmark list
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2007/09/27
Html debris copied from other websites
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2007/09/27
The latest word on my promotion
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2007/09/21
Patterns to look for in a histogram
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2007/09/17
What does a statistician do all day?
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2007/09/14
How many webpages have I written?
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2007/09/11
Case study of accrual in a clinical trial
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2007/09/05
My promotion application
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2007/09/04
Resources for grant writers
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2007/08/30
Are we assuming a normal sample or a normal population?
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2007/08/29
What makes pediatric research different?
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2007/08/22
Analyzing data from a simple crossover design
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2007/08/22
Common sources of confusion in a class on quality control
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2007/08/21
Accrual grant, Round 3
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2007/08/13
Does promoting your book constitute a conflict of interest?
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2007/08/13
How good is my prediction?
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2007/08/09
Justifying the sample size for a microarray study
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2007/08/09
Need for a conflict of interest policy
-
2007/08/03
Which expert should you believe?
-
2007/07/26
Should I use the heteroscedastic t-test?
-
2007/07/24
Continuing education questions for a talk on diagnostic tests
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2007/07/20
Classic calculations for a diagnostic test
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2007/07/18
Conflict of interest list
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2007/07/18
I don’t want to use a randomized trial
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2007/07/12
Code for drawing new likelihood ratio slide rule
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2007/07/07
The research world is not black and white
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2007/07/02
Recommendations from Sackett et al for evaluating a diagnostic test
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2007/06/29
The stubborn insistence on placebos
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2007/06/28
How two bad control groups can add up to one good comparison
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2007/06/28
How two bad control groups can add up to one good comparison
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2007/06/27
The debate about historical control groups
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2007/06/25
The trouble with apples and oranges
-
2007/06/22
Can the standard deviation be more than half of the range?
-
2007/06/22
I deserve a promotion
-
2007/06/22
Why the plus one in the percentile formula?
-
2007/06/15
Use of diagnostic tests for making clinical decisions
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2007/06/15
When bad control groups happen to good researchers
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2007/06/14
Seven different formulas for the odds ratio
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2007/06/14
Seven different formulas for the odds ratio
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2007/06/13
Accounting for cyclical trends in a regression model
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2007/06/11
Illustrated case studies of research ethics and research fraud
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2007/06/08
Centering the data
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2007/06/04
Calculating probabilities involving correlated normal variables
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2007/06/01
Applying likelihood ratios in your head
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2007/05/29
May has been a slow month
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2007/05/16
Choosing between two conflicting analyses
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2007/05/16
Classic references in evidence based medicine
-
2007/05/02
What to measure in a post-marketing surveillance study
-
2007/05/02
Where can you find interesting case studies in Statistics?
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2007/04/26
Cohen's Kappa with small cell sizes
-
2007/04/21
ANOM table for alpha=0.05, part 2
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2007/04/17
Fitting a beta binomial model using BUGS
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2007/04/13
A simple illustration of the Metropolis algorithm
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2007/04/11
Special section for quotations
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2007/04/10
IRB review of studies with methodological flaws
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2007/04/10
Quantifying the ability of dreams to predict the future
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2007/04/09
What is an adequate sample size for establishing validity and reliability?
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2007/04/06
Calculating rates
-
2007/04/06
useR! 2007 conference in Ames, Iowa
-
2007/04/06
What makes a good diagnostic test?
-
2007/04/05
Further explanation about Type I and Type II errors
-
2007/04/05
Tracking adverse events during kidney biopsy, Part 2
-
2007/04/04
The Seven Deadly Sins of Researchers
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2007/03/28
Reporting data analysis on transformed data
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2007/03/27
R Wiki
-
2007/03/26
IRB review of a pilot study
-
2007/03/22
Confidence intervals for count data
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2007/03/22
Some UNIX humor
-
2007/03/21
Interpretation of an odds ratio
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2007/03/18
What I’m working on right now
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2007/03/16
Randomly dividing a dataset in R
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2007/03/15
Bad calculation of annual rate of return
-
2007/03/14
Thanks to all my proofreaders!
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2007/03/14
Tracking adverse events during kidney biopsy
-
2007/03/13
Ignore weak evidence at your own peril
-
2007/03/11
Reviewing a paper on qualitative data analysis
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2007/03/08
How to draw a fishbone diagram
-
2007/03/07
Calculating a P control chart
-
2007/03/07
P control chart, answers to on your own exercises
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2007/03/06
Analysis of Means answers to on your own exercises
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2007/03/06
Calculation of Analysis of Means limits
-
2007/03/05
Review of statistical methods in The New England Journal of Medicine and Nature Medicine
-
2007/03/04
ANOM table for alpha=0.05, part 1
-
2007/03/02
Analysis of Means calculations
-
2007/03/02
Calculating an XBAR-S control chart
-
2007/03/02
Handouts for quality control workshop
-
2007/03/02
XBAR-S control chart, answers to on your own exercise
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2007/03/01
Using a pocket calculator to compute a standard deviation
-
2007/02/28
Team exercise to illustrate ANOM calculations
-
2007/02/19
Formulas for cumulative Poisson and binomial probabilities
-
2007/02/15
A recent contribution to Wikipedia and to the Chance Wiki
-
2007/02/15
Three simple rules to establish quality
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2007/02/14
Watch out for ambiguous data
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2007/02/11
Advice for searching in PubMed
-
2007/02/11
Compound interest and powers
-
2007/02/08
Resources for fMRI data analysis
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2007/02/06
When is a control chart not a control chart?
-
2007/02/01
Modular arithmetic and rounding in R
-
2007/01/31
The danger of providing expert testimony when you are not an expert
-
2007/01/30
Do your own power and sample size calculations
-
2007/01/26
Fitting a difference in exponential functions
-
2007/01/23
Manipulating graphic images using a touchscreen interface
-
2007/01/19
Books that discuss Poisson regression
-
2007/01/18
Tests of hypothesis and confidence intervals involving a correlation coefficient
-
2007/01/15
Resources describing biplots
-
2007/01/12
What can you do with 100 words?
-
2007/01/09
Differences between the Chi-square test, Fisher's Exact test, and logistic regression
-
2007/01/03
Variable cluster sizes and their impact on sample size calculations
-
2006/12/29
Be sure to account for dropouts in your sample size calculation
-
2006/12/29
What percentage of medical decisions are based on good evidence?
-
2006/12/20
Cherry picking the literature
-
2006/12/18
Unusual advice about control charts
-
2006/12/14
Should/Can Statistical Consultants, be Independent?
-
2006/12/14
Using focus groups to bridge the gap between research and practice
-
2006/12/13
Evidence-based development of medical guidelines
-
2006/12/13
Mathematical and statistical challenges
-
2006/12/12
Perfect isn't quite good enough
-
2006/12/06
PharmaIQ talks
-
2006/12/04
When are two events worrisome?
-
2006/11/21
Manipulation of peer-review publications by pharmaceutical companies
-
2006/11/17
A simple Bayesian model for accrual
-
2006/11/17
The tension between scientific validity and ethical concerns
-
2006/11/16
Fitting a quadratic regression model
-
2006/11/16
The complexities of having a variable number of measures per patient
-
2006/11/14
The danger of using humor on a web page
-
2006/11/09
Incorporating risk factors into diagnostic test calculations
-
2006/11/07
Rebutting an expert reviewer
-
2006/11/07
Technical Articles and Reports by David Heiser
-
2006/11/06
Materials for Signal Detection and Data Mining Strategies conference
-
2006/11/06
Medline is a very busy place
-
2006/11/02
Additions and improvements to my web pages
-
2006/11/02
Statistical concerns in research studies involving children
-
2006/10/27
Parametric tests for a ratio
-
2006/10/26
Adjusting a variable for age and sex
-
2006/10/26
Searching for pediatric articles on Medline
-
2006/10/23
Is a 10% shortfall in sample size critical?
-
2006/10/18
A simple example of a mixed linear regression model
-
2006/10/17
Ethical concerns about research in children
-
2006/10/16
Case studies for differences in research in children
-
2006/10/16
Mathematical derivation of the odds form of Bayes theorem
-
2006/10/13
Differences between children and adults
-
2006/10/10
Frank Harrell's Philosophy of Biostatistics
-
2006/10/05
Book reviews for Statistical Evidence
-
2006/10/02
My second grant, part 3
-
2006/09/25
Improvements to weblog categories
-
2006/09/21
Is my confidence interval too wide?
-
2006/09/19
Two talks for PharmaIQ
-
2006/09/18
Oops! I found statistical significance in my pilot study
-
2006/09/15
Resources for the use of Statistical Process Control in Healthcare
-
2006/09/15
Special issues for research involving children
-
2006/09/14
Pharmacogenetics Research Network
-
2006/09/13
Ambiguous nature of the word "risk"
-
2006/09/13
Email discussion groups
-
2006/09/13
My second grant, part 2
-
2006/09/12
Graphics options in R
-
2006/09/07
Postmodern thought and evidence based medicine
-
2006/09/07
Rules for rounding numbers
-
2006/09/02
Continuous monitoring of the number needed to harm
-
2006/08/31
Changing page breaks in SPSS
-
2006/08/29
Wikipedia entry on Binomial Confidence Interval, Part 3
-
2006/08/25
Citing statistical software in research papers
-
2006/08/22
Wikipedia entry on Binomial Confidence Interval, Part 2
-
2006/08/20
Quality control humor
-
2006/08/18
An exact confidence interval for a binomial proportion
-
2006/08/16
More than one thousand web pages now available on my site
-
2006/08/15
American Statistical Association Traveling Course committee
-
2006/08/03
When should you worry about recall bias?
-
2006/08/02
Sales figures for Statistical Evidence in Medical Trials
-
2006/07/28
R libraries for sample size justification
-
2006/07/26
My second grant
-
2006/07/25
Using a colloquial tone in a grant application
-
2006/07/18
Questions a volunteer should ask before participating in a clinical trial
-
2006/07/18
Selecting randomly from a list
-
2006/07/17
Seminar notes. Adjustments for multiple comparisons
-
2006/07/17
Seminar notes. Issues in the analysis of mixed linear models
-
2006/07/17
Seminar notes. Missing values in a dose response model
-
2006/07/17
Seminar notes. Working with molecular biologists
-
2006/07/12
Fraudulent images in research
-
2006/07/10
-
2006/07/06
Possible sources of funding for my grant
-
2006/07/05
Stopping rules for a Data Safety Monitoring Plan
-
2006/06/30
Some resources for Analysis of Means
-
2006/06/30
What is block randomization
-
2006/06/29
Likelihood software for clinical trials
-
2006/06/29
The problem with ranking ordinal scales
-
2006/06/28
Colors for R graphs
-
2006/06/28
Resources for Item Response Theory
-
2006/06/26
Slash and burn models
-
2006/06/23
Using a charge of fraud to achieve a political end
-
2006/06/20
Applications of the CUSUM chart
-
2006/06/20
Auditing for data entry errors
-
2006/06/20
Philosophy of teaching
-
2006/06/20
Putting a human face on Evidence Based Medicine
-
2006/06/20
Withholding Personal Health Information from a patient
-
2006/06/17
Seminar notes. Confidence intervals for a variance ratio
-
2006/06/07
New entry in the Chance Wiki
-
2006/06/05
An amusing correlation
-
2006/06/05
Seminar on control charts and adverse events
-
2006/05/31
Methods for haplotype analysis
-
2006/05/30
Interesting stuff for the month of May
-
2006/05/30
Monitoring accrual rates
-
2006/05/26
Relationship between the standard deviation and the sample size
-
2006/05/25
Upcoming talks about control charts
-
2006/05/24
Using APR-DRGs for risk adjustment
-
2006/05/24
You won't have Steve Simon to kick around anymore
-
2006/05/23
Another regular expression tip
-
2006/05/23
Can the p-value actually equal 1.0?
-
2006/05/23
Lost files
-
2006/05/18
Using regular expressions to insert line breaks
-
2006/05/17
Searching high level sources first
-
2006/05/10
Using a web site to promote your book
-
2006/05/08
Always ask why
-
2006/05/04
Data mining and drug safety
-
2006/05/04
What constitutes a conflict of interest?
-
2006/04/26
A simple application of propensity scores
-
2006/04/25
Surviving Statistical Spitting Matches
-
2006/04/19
Abstainer errors in study of alcohol abuse
-
2006/04/19
Giving credit where credit is due
-
2006/04/18
Univariate Model Based Clustering
-
2006/04/17
Placing the symbol X-bar in a document
-
2006/04/17
Three new koans
-
2006/04/17
Topic list is complete!
-
2006/04/12
Interesting websites, publications and quotes for the month of April
-
2006/04/11
The Healthcare Cost and Utilization Project
-
2006/04/04
Can you use the coefficient of determination for categorical variables?
-
2006/04/04
Interpretation of the correlation coefficient
-
2006/04/04
What is a beta coefficient?
-
2006/04/04
When is a co-authorship warranted?
-
2006/03/30
Articles on Bayesian data analysis
-
2006/03/30
Contradictory research
-
2006/03/30
How many charts should I pull?
-
2006/03/29
New koan page
-
2006/03/29
Small sample size, yet again
-
2006/03/29
The role of a statistician on an IRB
-
2006/03/26
Statistical koan #4
-
2006/03/24
Examples of a fishbone diagram
-
2006/03/24
Seminar notes, Creating More Effective Graphics
-
2006/03/17
My ten favorite books, #10
-
2006/03/16
Crash Course in Spss for Windows
-
2006/03/16
Statistical koan #3
-
2006/03/15
Post hoc comparisons
-
2006/03/14
Software for structural equations models
-
2006/03/10
More on the Emily Rosa experiment
-
2006/03/10
Poisson regression? Maybe not!
-
2006/03/10
Propensity scores
-
2006/03/08
What is construct validity?
-
2006/03/06
Best EBM articles in 2005
-
2006/02/28
Statistical koan #2
-
2006/02/28
Update on my book, Statistical Evidence in Medical Trials
-
2006/02/27
Statistical koans
-
2006/02/15
Difficulties in generalizing research
-
2006/02/14
Meta-analysis and diagnostic tests
-
2006/02/13
Checking a Chi-square test
-
2006/02/13
What makes a good book? A sense of humor.
-
2006/02/03
Reporting serious adverse events
-
2006/02/01
An Ensembl search
-
2006/02/01
Learning more about control charts
-
2006/01/31
How do the various clustering algorithms work?
-
2006/01/31
More lessons learned the hard way
-
2006/01/31
Real-life examples of survey mistakes
-
2006/01/31
Recent developments in searching for evidence
-
2006/01/24
A simple function for a Biplot in R
-
2006/01/24
Machine Learning tools in R
-
2006/01/24
Randomization tests for paired data
-
2006/01/20
Multicollinearity is not a violation of assumptions
-
2006/01/19
Davis Balestracci seminar
-
2006/01/19
Excluding zip codes with insufficient data
-
2006/01/18
Categorizing my weblog entries
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2006/01/18
The Journal of Statistical Software
-
2006/01/17
Characterizing reasons for refusal
-
2006/01/16
Handling dropouts in NNT/NNH calculations
-
2006/01/12
First peek at the cover of my new book
-
2006/01/11
Where to go, where to go
-
2006/01/09
Extreme value distribution
-
2006/01/05
An entry in Chance News
-
2006/01/04
The past year in my weblog
-
2005/12/21
Vote for me
-
2005/12/15
Confidence intervals are needed to evaluate clinical importance
-
2005/12/13
Fractions are funny
-
2005/12/13
Group Sequential Monitoring of Clinical Trials in R
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2005/12/12
The HapMap project
-
2005/11/28
Withholding information
-
2005/11/25
Hard learned lessons
-
2005/11/25
Slow progress on my weblog
-
2005/11/25
Stepwise regression to screen for covariates
-
2005/11/17
Web page for Fisher’s Exact test
-
2005/11/02
Non-destructive data editing
-
2005/11/02
Seventeen years between research and practice
-
2005/10/24
A nice definition of anecdotal evidence
-
2005/10/24
RMA normalization of microarrays
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2005/10/14
A totally negative microarray experiment
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2005/10/14
The fate of retracted articles
-
2005/10/14
Two nice R libraries
-
2005/10/13
A nonspecific diagnostic test
-
2005/10/11
A simple trick in R
-
2005/10/10
Responding to a critique of meta-analysis
-
2005/10/05
Quality control exercises, Part 2
-
2005/10/03
Sample size for a binomial confidence interval
-
2005/09/19
An error slips through the peer review process
-
2005/09/15
Dishonesty in medical research
-
2005/09/15
Free statistics software
-
2005/09/15
Testing for bimodality
-
2005/09/13
Self experimentation
-
2005/09/12
Science mentoring
-
2005/09/09
Two articles debating equipoise
-
2005/09/08
Naming conventions for genes, proteins, etc.
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2005/09/06
Finding more information about a gene
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2005/09/01
Quality control exercises
-
2005/08/17
What's New in SPSS version 14.0
-
2005/08/16
Another disaster averted
-
2005/08/15
Contacting and working with me
-
2005/08/12
IRBs and scientific validity
-
2005/08/12
Sample size for a binary endpoint
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2005/08/11
Case cohort design
-
2005/08/10
Dates in Excel and R
-
2005/08/03
Converting an odds ratio to a relative risk
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2005/08/02
Publication in the ChanceWiki
-
2005/08/01
Information content of a continuous distribution
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2005/07/29
Expected value and moments
-
2005/07/29
Overview of evidence-based-medicine
-
2005/07/28
More on normalization
-
2005/07/28
Moving R objects
-
2005/07/27
Permutation tests for microarrays
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2005/07/26
Analysis of Gene Expression Data Short Course
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2005/07/26
Merging in R
-
2005/07/22
Registration of clinical trials
-
2005/07/21
More on regular expressions
-
2005/07/19
Counterpoint on Google Scholar
-
2005/07/19
Very low values from Cronbach's Alpha
-
2005/07/15
The difference between absolute risks and relative risks
-
2005/07/11
Confidence interval for a correlation coefficient
-
2005/06/27
Dumping data from R to a text file
-
2005/06/20
What does a 60% drop mean?
-
2005/06/16
Step-down procedures for multiple comparisons
-
2005/06/10
More on the retroactive prayer study
-
2005/06/10
Some articles on meta-analysis
-
2005/06/06
When can I stop my CQI study?
-
2005/06/04
Taking charges of conflicting interest too far
-
2005/06/01
Information theory and microarrays
-
2005/05/31
The paired availability design
-
2005/05/26
Application of the ROC curve to microarray data
-
2005/05/25
Changes to STAT-L/sci.stat.consult
-
2005/05/25
Dimension reduction in a microarray experiment
-
2005/05/24
Importing value labels from Access into SPSS
-
2005/05/24
When one group only has a single observation
-
2005/05/23
Another open site closes
-
2005/05/20
Adjusting for covariate imbalance
-
2005/05/19
Computing normal probabilities
-
2005/05/17
What is critical thinking?
-
2005/05/16
A disaster averted
-
2005/05/16
Geometric distribution
-
2005/05/13
Hedge’s G
-
2005/05/13
Post hoc power is never justified
-
2005/05/11
Confidence intervals around a safety level
-
2005/05/10
String manipulations in R
-
2005/05/06
Preserving spacing in html code
-
2005/05/03
Searching the literature
-
2005/05/02
Meta-analysis talk
-
2005/04/28
PubMed tags
-
2005/04/27
Determining the optimal threshold for a diagnostic test
-
2005/04/26
Searching the Internet
-
2005/04/25
MedStats discussion group
-
2005/04/22
Microarray data analysis, again
-
2005/04/22
More than 90% censored values
-
2005/04/19
Incidence density ratio
-
2005/04/19
Measuring agreement
-
2005/04/19
S-plus version 7
-
2005/04/18
Profile analysis and MANOVA
-
2005/04/15
Fair Use of copyrighted material
-
2005/04/15
Presenting Numbers, Tables, and Charts
-
2005/04/15
Tolerance limits
-
2005/04/05
Do I have enough data after 24 months of time?
-
2005/04/05
Summing ordinal data
-
2005/03/31
Where is the confidence interval?
-
2005/03/25
Non-random samples
-
2005/03/25
Open-ended questions on a survey
-
2005/03/24
Inferential and descriptive statistics
-
2005/03/24
More on information theory models
-
2005/03/23
Surrogate outcomes
-
2005/03/22
A collection of randomized and non-randomized studies
-
2005/03/22
Coming soon!
-
2005/03/22
Language resources
-
2005/03/22
Meta-analysis for a diagnostic test
-
2005/03/22
Stratified Cox regression models
-
2005/03/22
Using Mathematica and Matlab for Statistics
-
2005/03/18
Meta-analysis
-
2005/03/15
Digitizing a graph
-
2005/03/14
Publicon software
-
2005/03/14
Quality of published research
-
2005/03/14
Selective reporting of research findings
-
2005/03/11
Clinical importance
-
2005/03/11
Cumulative meta-analysis
-
2005/03/10
More articles on microarrays
-
2005/03/10
Quotes for the month of March
-
2005/03/08
Sample size calculation for a nonparametric test
-
2005/03/08
Technology to end spam
-
2005/03/07
Review articles on microarrays
-
2005/03/02
PowerPoint Counterpoint
-
2005/03/01
Growth curves
-
2005/03/01
The costs of a false positive test
-
2005/02/28
Adjusting for a baseline measurement
-
2005/02/28
More on the top ten studies in EBM
-
2005/02/22
Taguchi methods
-
2005/02/21
Quotes for February
-
2005/02/18
Developing good practice guidelines
-
2005/02/16
Report cards
-
2005/02/15
Moderator variables
-
2005/02/15
Public access to publications from NIH-funded research
-
2005/02/15
Side effects of Cox-2 inhibitors
-
2005/02/14
Optimization using the MM algorithm
-
2005/02/14
Relationship between sample size and p-values
-
2005/02/11
Control charts for monitoring mortality rates
-
2005/02/09
Continuous variables in a logistic regression model
-
2005/02/08
A small p-value does not mean a large difference
-
2005/02/03
Sampling the entire population
-
2005/02/01
A surprising application of the harmonic mean
-
2005/01/26
Placing consecutive dates in a column of an SPSS file
-
2005/01/25
Re-weighting the data
-
2005/01/24
Quotes for the month of January
-
2005/01/24
Steps in a typical Bayesian model
-
2005/01/21
How good is your intuition?
-
2005/01/21
Summary Receiver Operating Characteristic Curve
-
2005/01/20
Adjusted odds ratios
-
2005/01/19
Testing baseline imbalance in a randomized study
-
2005/01/19
The Digital Object Identifier
-
2005/01/18
Confusion about p-values
-
2005/01/17
More thoughts on equipoise
-
2005/01/13
Small relative risks
-
2005/01/12
Forest plots
-
2005/01/06
Odds ratios less than one
-
2005/01/06
Two cautionary tales about data mining
-
2005/01/04
Spectrum Bias
-
2005/01/03
Monetary incentives
-
2005/01/01
A controversial meta-analysis
-
2005/01/01
Best EBM methods or teaching papers in 2004
-
2005/01/01
Ethical principles for Complementary and Alternative Medicine
-
2005/01/01
Examples of confidence intervals
-
2005/01/01
Media interview tips
-
2005/01/01
More on conflicts of interest
-
2005/01/01
More on discovering gene information
-
2005/01/01
Publicly available microarray data
-
2005/01/01
Statistical Analysis of Microarrays by Insightful Software
-
2005/01/01
The ethics of randomization
-
2005/01/01
Two articles in the Chance Wiki
-
2005/01/01
What alternative medicine can teach us about evidence-based medicine
-
2004/12/24
Acuity microarray analysis software
-
2004/12/24
Can you recommend a good book?
-
2004/12/24
Design and analysis of pilot studies
-
2004/12/24
Designing a questionnaire
-
2004/12/24
Is the randomized trial the gold standard for research?
-
2004/12/24
Outcomes research
-
2004/12/24
Subgroup Analysis
-
2004/12/22
Simpson's Paradox
-
2004/12/15
Neyman bias
-
2004/12/13
Prayer studies
-
2004/12/08
Surromed and the DecisionSite S-Plus Server Solution
-
2004/12/07
New in SPSS version 13.0
-
2004/12/01
Entrenched beliefs
-
2004/11/30
Sample size for cluster randomized trials
-
2004/11/29
Measuring heterogeneity in meta-analysis
-
2004/11/24
Alternatives to equipoise
-
2004/11/24
Intellectual conflict of interest [Incomplete]
-
2004/11/24
Unequal sample sizes
-
2004/11/19
Software patents
-
2004/11/12
Discrepancy between univariate and multivariate models
-
2004/11/09
Testing multinomial proportions
-
2004/11/05
Confidence intervals for complex research designs
-
2004/11/04
Research on therapies that have no known mechanism of action
-
2004/11/02
Anecdotal information
-
2004/11/01
Unblinding at the end of a study
-
2004/10/25
Automating statistical analyses
-
2004/10/25
Unnecessary diagnostic tests
-
2004/09/24
Top six mistakes in teaching EBM
-
2004/09/23
The price of Kaplan-Meier
-
2004/09/22
Multiple degree of freedom tests
-
2004/09/22
Sample size for an ordinal outcome
-
2004/09/21
A simple microarray experiment
-
2004/09/17
What's the best statistical model?
-
2004/09/15
Rates versus proportions
-
2004/09/13
Printer friendly versions of web pages
-
2004/09/10
International Classification of Functioning, Disability, and Health
-
2004/09/06
Full-Body Computed Tomography Screening
-
2004/09/03
Nitty Gritty NIH
-
2004/08/31
More on information theory models
-
2004/08/27
Report cards
-
2004/08/25
Statistical software
-
2004/08/24
Free Full Text on the Web
-
2004/08/24
Selection bias
-
2004/08/24
Stratified randomization
-
2004/08/05
Microsoft Excel Pivot Tables
-
2004/08/05
Unbalanced sample sizes for evaluating a diagnostic test
-
2004/08/04
So you want to volunteer for a research study?
-
2004/08/02
Secondary Uses of Data
-
2004/07/29
Breaking the blind
-
2004/07/29
Statalist
-
2004/07/27
Confidence intervals for proportions
-
2004/07/27
Evaluating the AUC for an ROC curve
-
2004/07/26
Random identification numbers
-
2004/07/23
Is there a mechanism?
-
2004/07/23
Sample size calculations in studies with a baseline
-
2004/07/21
Retrospective chart reviews and IRB approval
-
2004/07/20
Conflict of interest
-
2004/07/19
Aliasing patterns
-
2004/07/15
Adaptive randomization
-
2004/07/15
Bluejacket Toastmasters speech
-
2004/07/14
Randomization test
-
2004/07/09
Provisional means algorithm
-
2004/07/06
Planning a qualitative research study
-
2004/07/05
Sample size for a diagnostic test
-
2004/07/01
Early stopping
-
2004/07/01
Early stopping in an animal study
-
2004/06/30
Small relative risk
-
2004/06/28
Nonlinear Least Squares in S-plus and R
-
2004/06/25
Excluding placebo responders
-
2004/06/25
Publication bias
-
2004/06/24
Pap smears for women without a cervix
-
2004/06/23
The impact of XML on Statistics
-
2004/06/22
S+ArrayAnalyzer web seminar
-
2004/06/17
McNemar’s Test
-
2004/06/15
Data Mining with Clementine
-
2004/06/15
Evidence-based Complementary and Alternative Medicine
-
2004/06/14
Statistical consulting
-
2004/06/01
Categorical variables in a logistic regression model
-
2004/05/31
Health effects of smoking
-
2004/05/31
Monte Carlo methods
-
2004/05/24
Analyzing percentage data
-
2004/05/20
Sample size calculation example
-
2004/05/18
Goodness of fit test
-
2004/05/13
Correlations with categorical variables
-
2004/05/13
Sample size for a survival data model
-
2004/05/12
Advanced SPSS methods
-
2004/05/10
Information Theory
-
2004/05/06
Acuity microarray analysis software.
-
2004/05/03
Overlooking one's own flaws
-
2004/04/15
Degrees of freedom, Part 2
-
2004/04/15
The Wikipedia
-
2004/04/13
Focus groups and qualitative research
-
2004/04/12
Clinically trivial effects
-
2004/04/12
One tailed p-values
-
2004/04/12
One-tailed p-values
-
2004/04/09
A serious problem of publication bias
-
2004/04/07
Temporality of Causes
-
2004/03/23
Constraints on Randomization
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2004/03/18
Evidence-based lessons learned from Cardiology
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2004/03/18
Microarray data analysis
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2004/03/15
EM Algorithm
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2004/03/12
Steps for establishing a quality control program
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2004/03/09
Central Limit Theorem
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2004/03/09
Parametric versus nonparametric tests
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2004/03/09
Quality control in the laboratory
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2004/02/25
Conflict of Interest
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2004/02/20
Evidence Based Medicine and Ethics
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2004/02/18
Number needed to harm examples
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2004/02/12
S-shaped curves
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2004/02/05
Enumerative and Analytic Studies
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2004/02/03
Educational Resources
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2004/01/14
Brief Biography
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2004/01/01
Craniosacral therapy
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2004/01/01
Deaf chairs, lost cake recipes, and a letter from Maria.
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2004/01/01
I hate PowerPoint
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2004/01/01
In vitro fertilization prayer study
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2004/01/01
In vitro fertilization prayer study
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2004/01/01
My efforts to kill PowerPoint
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2004/01/01
Recent updates
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2004/01/01
Weblog entries from the 2004 JSM
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2004/01/01
What’s a good value for Cronbach’s Alpha?
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2003/11/27
Steps in a typical equivalence data analysis
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2003/11/26
Data is/are
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2003/10/01
A simple model of nonlinear growth
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2003/09/22
Steps in a typical data mining model
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2003/07/29
SPSS syntax for Poisson Regression, Marta Garcia-Granero, PhD
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2003/07/24
What does “overfitting” mean?
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2003/06/20
Steps in a typical ANOVA model
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2003/06/05
Pitch the pie! Ban the bar!
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2003/06/05
Skewed data
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2003/05/09
Cluster randomization
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2003/05/06
Maximum likelihood estimation
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2003/04/30
For CMH employees only. Statistical Consulting Services
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2003/04/23
Building a complex model
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2003/02/03
Coding race/ethnicity
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2003/01/01
Diagnostic …
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2002/11/06
Displaying tables of percentages
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2002/11/01
Post hoc power
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2002/10/11
Log transformation
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2002/10/11
Steps in a typical survival data analysis
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2002/09/11
Checking the assumption of normality
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2002/08/27
Data management for survival data
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2002/08/27
Data management for survival data
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2002/08/27
Data management for survival data
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2002/08/01
Exploring interactions in a linear regression model
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2002/07/26
Longitudinal data
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2002/07/23
The concepts behind the logistic regression model
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2002/07/22
SPSS dialog boxes for logistic regression
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2002/07/12
So you want to write a questionnaire
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2002/06/24
Interpreting coefficients in a linear regression model
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2002/06/21
SPSS dialog boxes for a descriptive analysis
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2002/06/21
SPSS dialog boxes for linear regression models
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2002/05/06
Why 95% confidence limits?
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2002/03/06
SPSS citation
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2002/01/16
Biography
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2002/01/01
Establishing validity and reliability
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2002/01/01
Getting IRB approval for your research
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2002/01/01
Stopping a study early
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2001/11/02
Unequal group sizes
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2001/10/11
BMJ letter
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2001/10/11
Problems with a very small sample
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2001/10/11
Steps in a descriptive model
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2001/07/30
Parametric versus nonparametric tests
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2001/07/30
Web polls
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2001/01/24
Loading ODBC drivers from the Microsoft Data Access Pack
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2001/01/19
The minimal impact of population size on power and precision
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2001/01/09
Odds ratio versus relative risk
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2001/01/01
Confidence interval with zero events
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2001/01/01
Documenting negative results in a research paper
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2001/01/01
Ethics of a placebo group
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2001/01/01
Privacy concerns in research
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2001/01/01
Quick sample size calculations
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2001/01/01
Steps in a descriptive model
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2001/01/01
Three things you need for a power calculation
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2000/12/22
Protocol changes.
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2000/09/28
Sample size for the Mann-Whitney U test
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2000/08/24
Software used to create these web pages.
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2000/08/23
Binary outcome sample size calculations
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2000/08/23
Fisher’s Exact Test
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2000/08/23
Stratified random sample.
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2000/08/22
Alternating treatments
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2000/06/27
Kaplan Meier
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2000/02/02
Links from other sites
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2000/01/28
Acknowledgements
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2000/01/28
Exporting SPSS graphs and tables.
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2000/01/28
Important disclaimer.
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2000/01/28
Outliers
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2000/01/28
Quota stratified random sampling.
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2000/01/28
Spreadsheet or Database?
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2000/01/27
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2000/01/27
Bootstrap
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2000/01/27
Composite scores
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2000/01/27
Flaws in a research paper
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2000/01/27
Intention to treat
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2000/01/27
Jargon in Statistics
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2000/01/27
Mixture models
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2000/01/27
Number Needed to Treat
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2000/01/27
Physician Performance Data
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2000/01/27
Regression to the mean
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2000/01/27
Sigma in the control chart.
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2000/01/27
Splines
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2000/01/27
Stein’s paradox
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2000/01/27
What is collinearity?
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2000/01/26
Best fitting curve
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2000/01/26
Sample size for a confidence interval
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2000/01/01
Copyright
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2000/01/01
Future work on this website
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2000/01/01
Information about myself
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2000/01/01
Mean or median?
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2000/01/01
My resume
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2000/01/01
Obsolete webpages
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1999/12/15
Circular data models
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1999/11/15
Meta-analysis for a diagnostic
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1999/11/15
Meta-analysis for a diagnostic
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1999/10/15
Longitudinal data analysis
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1999/09/27
Guidelines for logistic regression models
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1999/09/23
Injury index creation
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1999/09/21
Poisson regression model
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1999/09/21
Steps in a typical linear regression analysis
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1999/09/20
Importing spreadsheet data into SPSS
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1999/09/20
Where do research ideas come from? by Ronan Conroy
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1999/09/18
Documenting your SPSS data sets
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1999/09/18
Inputting a two-by-two table into SPSS
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1999/09/18
Modifying SPSS data
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1999/09/13
Interim analysis
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1999/09/13
Type II error
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1999/09/13
Writing a research grant
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1999/09/03
Asymmetric confidence intervals
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1999/09/03
Bonferroni correction
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1999/09/03
Chi-squared test
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1999/09/03
Degrees of Freedom
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1999/09/03
E notation
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1999/09/03
General guide to data entry
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1999/09/03
Page's test
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1999/09/03
Pilot study
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1999/09/03
Sample size for a diagnostic study
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1999/08/19
ROC curve
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1999/08/18
All or nothing
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1999/08/18
Date calculations in SPSS
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1999/08/18
Developing a research hypothesis
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1999/08/18
How to randomize
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1999/08/18
Importing database files into SPSS
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1999/08/18
R-squared
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1999/08/18
Raynald’s SPSS Tools
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1999/04/18
T-test
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1999/04/18
T-test
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1999/01/15
Merging files in SPSS
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1999/01/01
(Being updated)
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1999/01/01
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1999/01/01
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1999/01/01
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1999/01/01
Abstract submitted to Missouri …
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1999/01/01
Abstracts for a possible upcoming …
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1999/01/01
Ambiguity in the definition of the exponential distribution
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1999/01/01
An example of a bad survey
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1999/01/01
An interesting alternative to power …
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1999/01/01
Another counter-intuitive …
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1999/01/01
Are certain CAM therapies …
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1999/01/01
Array bibliography (Being updated)
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1999/01/01
BUGS is more than just one program
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1999/01/01
Calculating weights to correct…
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1999/01/01
Can sex be an outcome variable?
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1999/01/01
Can you compute a confidence interval for
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1999/01/01
Classic references in Statistics
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1999/01/01
Competing books to the book I …
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1999/01/01
Consulting remotely versus …
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1999/01/01
Creating LaTex formulas on the fly
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1999/01/01
Dealing with a large text file that …
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1999/01/01
Exponential interpolation
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1999/01/01
Facebook account
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1999/01/01
Fan page for The Monthly Mean
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1999/01/01
Fighting the claim that any size…
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1999/01/01
Finding duplicate records in a 19 …
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1999/01/01
Glossary for my second book
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1999/01/01
How do I handle criticism
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1999/01/01
How I got started in my career as an …
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1999/01/01
How to avoid charges of plagiarism
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1999/01/01
Humility is a good thing for …
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1999/01/01
If you knew that failure was not an …
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1999/01/01
Interpreting p-values in a …
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1999/01/01
Is Evidence-Based Medicine too rigid?
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1999/01/01
Is intuition real?
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1999/01/01
Is it ethical to recruit a panhandler …
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1999/01/01
Is there something better than …
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1999/01/01
Jumpstart Statistics, a proposal for my …
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1999/01/01
Lessons learned the hard way. Don’t throw …
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1999/01/01
Location of my UMKC office
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1999/01/01
Masters or Phd in Statistics?
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1999/01/01
Meta-analysis for a single mean
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1999/01/01
Minimum sample size needed for a time …
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1999/01/01
More discussion on …
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1999/01/01
My new twitter account
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1999/01/01
Oh those pesky interactions!
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1999/01/01
Ordinal entropy
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1999/01/01
Ordinal surprisals
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1999/01/01
Poem to help you remember the quotient rule
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1999/01/01
Pooling different measures of risk in a …
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1999/01/01
Poster presentation at the …
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1999/01/01
Power calculations for comparison of …
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1999/01/01
Proposed poster for the Missouri …
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1999/01/01
Putting variable names into a model
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1999/01/01
Quiz about p-values
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1999/01/01
Resources using Stack Overflow
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1999/01/01
SPSS or Stata?
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1999/01/01
Standard operating procedures for a …
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1999/01/01
Tentative table of contents for my second
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1999/01/01
The futility of small sample sizes for …
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1999/01/01
The odds ratio in logistic regression
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1999/01/01
The Science-Based Medicine …
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1999/01/01
The SPSS t-test is confusing
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1999/01/01
Transforming the parameter …
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1999/01/01
Using information theory to identify …
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1999/01/01
What are the characteristics of a good consultant?
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1999/01/01
What I use for talks instead of …
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1999/01/01
What is a Generalized Estimating Equations …
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1999/01/01
What is principal components analysis?
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1999/01/01
What is residual confounding?
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1999/01/01
What is the premier conference for …
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1999/01/01
What makes a good website?
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1999/01/01
What should clients get from you at …
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1999/01/01
What to say when any data …
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1999/01/01
What’s a fair price for SPSS?
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1999/01/01
Where can I find free online textbooks?
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1999/01/01
Why the least squares regression line …
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1999/01/01
Withdrawing from a study and taking …
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1999/01/01
Would you hire someone who knew theory …
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0001/01/01
Criticisms of the IHME COVID-19 model