Being updated

2024/06/14 Infovis and Statistical Graphics: Different Goals, Different Looks
2024/03/20 Security policies at my job
2024/01/03 With four parameters…
2023/11/08 Standardized survival functions
2023/09/12 Too many colors spoil the graph
2019/01/20 (Being updated)
2015/07/29 Files for my R class
2013/12/07 Simple example of Fourier transform
2013/12/01 Five Fridays in a month
2013/11/02 Testing an R function
2013/09/26 Hedging your bets on an informative prior
2013/09/10 Can I focus on a subset of conditions in my experiment
2013/09/04 Running JAGS from R, a simple example
2013/09/03 Developing a computer program using modern methods
2013/08/26 I get a letter published in the Kansas City Star
2013/08/14 Resource for statisticians called as legal experts in a trial
2013/08/01 Sample chapter: The first three steps in a descriptive data analysis
2013/07/31 Calculating predicted probabilities from a logistic regression model
2013/07/29 R code for estimating the duration of a clinical trial with a fixed sample size
2013/07/29 R code for estimating the sample size of a clinical trial with a fixed duration
2013/04/26 How do you compute an adjusted probability?
2013/04/23 The confidence interval for my odds ratio is too narrow!
2013/04/09 Deciphering a non-linear curve
2013/04/02 Counting squares
2013/02/19 Placing the mind of a statistician into software
2013/01/14 What does it really mean to say that a mean of a large number of variables is approximately normal
2012/12/31 Elbow model for accrual
2012/12/31 Mixture of two binomial distributions
2012/12/31 What you should look for in a statistical consultant
2012/12/12 A single wildly large value makes you less confident that the mean of your data is large
2012/12/08 Animations in R
2012/12/04 Analyzing data from the National Hospital Ambulatory Care Survey
2012/11/21 Data sharing
2012/11/05 Lasso talk
2012/11/05 Lasso talk, figure 1
2012/11/05 Lasso talk, figure 2
2012/11/05 Lasso talk, figure 3
2012/11/05 Lasso talk, figure 4
2012/11/05 Lasso talk, figure 5
2012/11/05 Lasso talk, figure 6
2012/10/13 Accrual with a slow start-up
2012/10/10 Mapping my runs in R
2012/10/08 Are you qualified to make that comment?
2012/10/04 Don’t write your own questionnaire
2012/10/01 Debating the validity of snowball sampling
2012/09/19 Borderline p-values
2012/09/19 When should I use the Fisher’s Exact Test and when should I use the Chi-Square Test
2012/09/12 What’s the name of the test for comparing two proportions?
2012/08/27 Data management in R versus SAS
2012/07/27 Whiskers in a boxplot
2012/07/20 Parsing information in an XML file
2012/07/16 The secret to great wealth is …
2012/05/22 (Being updated)
2012/05/17 Reviewing how the binomial and negative binomial distributions work
2012/05/15 A simple example of change of variable
2012/05/12 A fishy story about randomization
2012/05/02 Statistical distributions borrowed from Wikipedia
2012/04/22 Accrual with refusals, exclusions, or dropouts
2012/04/19 The simple accrual model, redefined
2012/04/18 BUGS model for the simple Poisson accrual model
2012/04/13 Fitting the homogenous accrual model in BUGS
2012/04/09 Bad scaling choices for the SPSS ROC curve
2012/04/09 Deriving accrual using the geometric distribution
2012/04/09 What’s new
2012/04/03 Iowa talk on accrual
2012/03/19 Free consultation means no co-authorship?
2012/03/07 Making predictions based on just the correlation
2012/02/23 How sample size calculations are reported in the literature
2012/02/18 What non-statistical skills do consultants need?
2012/02/08 Questions for a panel on statistical consulting
2012/02/06 Percentage of care that does not have a medical basis
2012/01/27 Promoting your consulting career in the era of web 2.0
2012/01/25 Honorable mention for my R code on accrual
2012/01/12 Arguing with the material in an ethics training program
2012/01/09 What to report when SPSS says the p-value is zero
2012/01/04 Post hoc power persists because peer-reviewers demand it
2012/01/01 A very silly graph
2011/12/31 Author pays model
2011/12/31 Definition of translational research
2011/12/31 Review of new James Penston book
2011/12/31 Some thoughts on a backup policy
2011/12/31 Strange results in KMeans clustering
2011/12/16 Discrepancies in the chisquare test
2011/11/21 Why is a 20% dropout rate bad?
2011/11/08 SPSS won’t compute my odds ratio!
2011/11/07 Looking at another grant opportunity
2011/10/31 Meta-analysis with non-comparable procedures
2011/10/20 My entry into the Applications of R in Business Competition
2011/10/11 Conditional Frailty Models
2011/10/06 Statistical literacy talk
2011/10/04 Proposal for session on grant writing
2011/09/16 What single idea will make the biggest impact on healthcare today
2011/09/12 Sharing the same classroom for five consecutive years
2011/08/13 Banning editorials and clinical reviews from authors with industry ties
2011/08/04 Publicity for your consulting career
2011/07/30 Twelve subjects in a within subject design
2011/07/11 Teaching classes for a fee
2011/06/17 Statistical calculators on the web
2011/06/14 Cartoon about placebos
2011/06/02 When you’re stuck writing major sections of another person’s grant
2011/05/31 Can prisons randomly assign prisoners without their consent?
2011/05/22 Bayesian inference on the geometric distribution
2011/05/11 Is it ethical to provide statistical consulting on a disseration to a Ph.D. candidate
2011/05/09 How independent consulting is different
2011/05/05 The importance of being self-critical
2011/04/26 I can’t find a standard deviation for my power calculations
2011/04/22 Examples of the difference made by high quality research
2011/04/20 Can Bayesian methods help with small sample sizes?
2011/04/07 Quotes and references from Dr. Harrell
2011/01/01 Good news about my second book proposal
2010/12/20 Creating LaTex formulas on the fly
2010/12/09 Location of my UMKC office
2010/12/01 Are certain CAM therapies undeserving of further study
2010/12/01 Closed form solution for homogenous accrual
2010/12/01 Using the Poisson distribution for modeling accrual
2010/11/26 Poem to help you remember the quotient rule
2010/11/25 Transforming the parameter also transforms the prior distribution
2010/11/22 The odds ratio in logistic regression is the opposite of what it should be
2010/11/19 BUGS is more than just one program
2010/11/16 Ambiguity in the definition of the exponential distribution
2010/11/09 The Science-Based Medicine blog defends itself
2010/11/06 Taking conflict of interest too far
2010/11/03 Would you hire someone who knew theory
2010/11/02 Justifying the sample size in an equivalence study
2010/10/23 Work in pharma versus work in academia
2010/10/16 Lost page
2010/10/12 Lost page
2010/10/04 Poster presentation at the Missouri Technology conference
2010/10/01 If you knew that failure was not an option what would you do
2010/10/01 Why the least squares regression line has to pass through XBAR, YBAR
2010/09/20 Is there something better than Evidence Based Medicine out there
2010/09/20 Putting variable names into a model automatically
2010/09/16 Oh those pesky interactions!
2010/09/15 My new twitter account
2010/09/10 Can you compute a confidence interval for your p-value
2010/09/02 Using information theory to identify discrepancies within and between text files
2010/08/25 Learning how to fit latent growth curve in Amos
2010/08/19 Is Evidence-Based Medicine too rigid
2010/08/19 What is a Generalized Estimating Equations Model
2010/08/19 What is principal components analysis?
2010/08/16 Competing books to the book I am planning to write
2010/08/14 What should clients get from you at the end of your first consulting session
2010/08/11 Glossary for my second book
2010/08/06 What’s a fair price for SPSS?
2010/08/05 Fighting the claim that any size difference is clinically important
2010/07/30 Standard operating procedures for a statistical consulting center
2010/07/26 Acknowledgments for my second book
2010/07/26 Pooling different measures of risk in a meta-analysis
2010/07/24 Sample chapter: The first three steps in selecting an appropriate sample size
2010/07/24 Tentative table of contents for my second book
2010/07/23 Jumpstart Statistics, a proposal for my second book
2010/07/21 Salary survey for Biostatisticians
2010/07/04 Another counter-intuitive probability problem
2010/07/01 Can political questions be resolved by science
2010/06/30 Resources using Stack Overflow
2010/06/29 Classic references in Statistics
2010/06/29 The SPSS t-test is confusing
2010/06/28 Fitting a new class of nonlinear regression models
2010/06/28 What I use for talks instead of Powerpoint
2010/06/28 What I use for talks instead of Powerpoint
2010/06/16 The futility of small sample sizes for evaluating a binary outcome
2010/06/11 An example of a bad survey
2010/06/09 An interesting alternative to power calculattions
2010/06/08 Minimum sample size needed for a time series prediction
2010/06/03 Computing power for an interaction in linear regression
2010/05/28 Lessons learned the hard way. Don’t presume to know how your software handles missing value codes
2010/05/28 What is the premier conference for statistical consulting
2010/05/26 Making simple modifications to a graph in SPSS
2010/05/24 How I got started in my career as an independent statistical consultant
2010/05/21 How do I handle criticism
2010/05/15 How to avoid charges of plagiarism
2010/05/15 Withdrawing from a study and taking your data with you
2010/05/14 Lessons learned the hard way: don’t throw good money after bad
2010/05/03 More discussion on instrumental variables
2010/05/03 What is a good surrogate measure for socioeconomic status
2010/04/14 Interpreting p-values in a published abstract, part 1
2010/04/14 Quiz about p-values
2010/04/07 What makes a good website?
2010/04/05 Should I learn R instead of SAS
2010/04/02 Dealing with a large text file that crashes your computer
2010/03/25 What to say when any data analysis is pointless
2010/03/20 Ordinal surprisals
2010/03/16 Can sex be an outcome variable?
2010/03/11 Ordinal entropy
2010/03/02 Finding duplicate records in a 19 million record database
2010/02/13 Abstract submitted to Missouri Regional Life Sciences Summit
2010/02/11 Exponential interpolation
2010/02/11 Fan page for The Monthly Mean
2010/02/10 Statistical Literacy for Medical Librarians
2010/02/10 Survey of librarians in the Midcontinental Chapter of the Medical Library Association
2010/02/08 Consulting remotely versus consulting in person
2010/02/08 Humility is a good thing for researchers to have
2010/02/07 What are the characteristics of a good consultant
2010/02/03 Proposed poster for the Missouri Regional Life Sciences Summit
2010/01/27 Finding the standard deviation for a power calculation
2010/01/25 Facebook account
2010/01/19 SPSS or Stata?
2010/01/17 Where can I find free online textbooks
2010/01/15 The first three steps in selecting an appropriate sample size
2010/01/14 Lost page
2010/01/11 Power calculations for comparison of Poisson counts across two groups
2010/01/06 What is residual confounding?
2010/01/01 My life so far, fails to meet expectations
2009/12/14 Entering and analyzing data from a two by two table
2009/11/30 Randomly generating simple math problems using R
2009/11/23 Generating multinomial random variables in Excel
2009/11/07 Jump start statistics for beginning researchers
2009/11/02 Rotating locations
2009/10/30 Sneaking ineligible patients into a clinical trial
2009/10/29 What is a normal probability plot?
2009/10/16 Data layout for an ROC curve
2009/10/13 Are we statisticians gods?
2009/10/13 Use of Likert data with ANOVA
2009/09/16 Can I stop this study?
2009/09/16 The problem with being too sensitive
2009/09/15 Simple longitudinal data analyses, part 1
2009/09/14 Getting a good cut-off
2009/09/14 Power for a three arm experiment
2009/09/12 Tentative training schedule
2009/09/12 The controversy over standardized beta coefficients
2009/08/12 Standard error for an odds ratio
2009/07/24 Formula for multiple imputation
2009/07/08 Do multiple time points require a Bonferroni adjustment
2009/06/30 The perils of self-evaluation
2009/05/24 Institute of Medicine report on conflict of interest
2009/05/22 Data that IRBs should collect about themselves
2009/05/22 The surprisal matrix and applications to exploration of very large discrete data sets
2009/05/11 NYTimes advice on increasing website traffic
2009/04/28 Is this a case-control design?
2009/04/20 Calculating NNT for
2009/04/20 Can I use you as a teaching example?
2009/04/15 Calculating NNT for infection rates
2009/03/30 Short biography
2009/03/30 Two business contacts
2009/03/19 I love to write
2009/03/12 Five points or seven points on a survey scale
2009/03/07 Good papers for a journal club
2009/03/05 Locating individual points on an ROC curve
2009/02/26 Sample size calculation for a logistic regression model
2009/02/18 Fewer than 10 events per variable
2009/02/16 Interpreting a negative autocorrelation
2009/01/28 Calibrating information
2009/01/21 Updates for 2009
2009/01/19 Changes in the adjusted hazard
2009/01/14 Drawing simple mathematical graphs
2009/01/07 A simple example of joint and conditional entropy
2009/01/06 Maybe Powerpoint isn’t so bad
2009/01/01 A sportswriter tackles the Monty Hall problem
2009/01/01 Analyzing bad data
2009/01/01 Developing a website logo
2009/01/01 DNA binding image
2009/01/01 New Bioinformatics degree
2009/01/01 What is the effect of an unmeasured covariate?
2008/12/17 Viewing SPSS and SAS output without buying SPSS and SAS
2008/12/16 Using a sub-optimal approach in meta-analysis
2008/12/01 Zotero, The Next Generation Research Tool
2008/11/21 What is the Lan-DeMets approach to interim analysis
2008/11/17 Updates for 2008
2008/11/05 Explaining CART models in simple terms
2008/11/05 Four assumptions of multiple regression that researchers should always test
2008/11/05 Reading abstracts instead of the full paper
2008/11/05 The Myth of Equipoise in Phase 1 Clinical Trials
2008/11/05 The Myth of Equipoise in Phase 1 Clinical Trials
2008/11/05 The statistician who supposes that…
2008/11/04 Statisticians are not gatekeepers
2008/11/01 Comparing a set of microarray experiments to a model experiment
2008/11/01 Components of placebo effect, Randomised controlled trial in patients with irritable bowel syndrome
2008/11/01 Helping Doctors and Patients Make Sense of Health Statistics
2008/11/01 Regression with SAS. Additional coding systems for categorical variables
2008/10/28 Refusing to analyze a data set
2008/10/28 To be updated
2008/10/22 A standard deviation that is too big for its own britches
2008/10/20 Computing a difference between first and last variables
2008/10/20 Intervening variable
2008/10/20 Variables and hypotheses
2008/10/19 Errors in statistical methodology
2008/10/19 Example of power calculation for a repeated measures design
2008/10/18 Biostatistics or Health Informatics programs in or near Kansas City
2008/10/18 Defending Bonferroni
2008/10/18 Interpretations for a two by two table
2008/10/14 Normality assumptions for the paired t-test
2008/10/14 T-test with 3 treatment values and 2 controls
2008/10/11 Example of power calculation for a repeated measures design
2008/10/08 A simple example of overfitting
2008/10/07 How do I fit a piecewise linear regression
2008/10/07 What’s new in SPSS 17
2008/10/01 Evaluating private conflicts of interest
2008/09/25 Can I ask you a question
2008/09/25 Comparing pre and post data with a parallel control group
2008/09/25 Processing skip fields in SPSS
2008/09/23 Venn diagrams with proportional areas
2008/09/18 Can an outcome with three levels be used in logistic regression
2008/09/18 Links and references that I need to add
2008/09/17 Categorizing entropy values
2008/09/15 Jackknife applied to entropy calculations
2008/09/13 Use of entropy measures for sperm morphology classification
2008/09/12 Comparisons involving distinct groups collected at different times and with different methods
2008/09/12 How do you compute a continuity correction for a confidence interval
2008/09/12 What does “population-based” mean?
2008/09/09 Multiple email accounts
2008/09/09 Where did you get that formula for the confidence interval
2008/09/08 The case of Ranjit Kumar Chandra
2008/09/04 Applying the sequence logo concept to data quality
2008/08/28 Checks for data quality using metadata
2008/08/27 Controversies with a test for ovarian cancer
2008/08/25 Entropy as a measure of data quality across multiple variables
2008/08/20 Another inquiry about slash and burn models
2008/08/20 Is there a scientific basis for EBM?
2008/08/20 Source for sample size formula
2008/08/20 What resources are available for fellows
2008/08/20 Where to look for information in a controversial area
2008/08/19 Social networking as a business tool
2008/08/11 Cumulative entropy as a measure of data quality
2008/08/09 To be updated
2008/08/08 Anti-intellectualism
2008/08/07 Interval scale for count data
2008/08/06 Harsh sanctions are only part of the solution
2008/08/05 Comparing two proportions out of the same multinomial population
2008/08/05 Reporting of adverse events
2008/08/02 Resources from the Statistical Consulting Section of the American Statistical Association
2008/07/30 Naming conventions for variables
2008/07/28 Business aspects of an independent statistical consultant
2008/07/28 What does the FDA think about Bayesian statistics
2008/07/24 Plug for accrual research
2008/07/24 Should I abandon FrontPage?
2008/07/23 Godwin’s Law
2008/07/23 Mail and calendar software I use in my new job
2008/07/23 My very first meta-analysis
2008/07/23 What distribution does this data come from
2008/07/21 Survey results from nine out of thirty six
2008/07/18 Can I use some material from your website
2008/07/18 Software for bootstrap and resampling
2008/07/18 Where can I learn more about Statistics?
2008/07/17 Getting on and off various email lists
2008/07/15 A misleading bar graph
2008/07/15 Hire me as a consultant
2008/07/15 Undeclared missing code leads
2008/07/15 Using Google to search through my website
2008/07/12 How to report a one-tailed Fisher’s Exact Test
2008/07/11 Pearson correlation and ordinal data
2008/07/11 Pearson correlation and ordinal data don’t mix
2008/07/09 Where did that standard deviation come from
2008/07/01 Distrust of a Bayesian
2008/06/24 How many files
2008/06/17 Can I run a quantitative analysis on this data?
2008/06/17 Running R on a web server
2008/06/14 Criticism of random effects in a meta-analysis
2008/06/07 Eliciting a prior distribution for rejection/refusal rates
2008/06/05 When does heterogeneity become a concern?
2008/06/05 Why it’s impossible to keep a resume current
2008/05/27 How wide can you make a line of your web page?
2008/05/26 A simple Bayesian model for
2008/05/09 A short biography that can be used as an introduction
2008/05/08 Why does a Bayesian approach make sense for monitoring accrual?
2008/05/07 Slipped deadlines and sample size shortfalls in a random sample of research studies
2008/05/01 Monitoring refusals and exclusions in a clinical trial
2008/04/24 Nomination for the Kreamer Award for Research Excellence
2008/04/23 Evidence Based Medicine for patients
2008/04/14 A brief overview of instrumental variables
2008/04/06 A simple math error
2008/04/06 What does one-third of the way through a study mean?
2008/04/04 Calculating statistics on whole numbers
2008/04/03 An alternative to the p-value
2008/03/29 What sort of statistical training is needed for basic scientists?
2008/03/25 Statistics for Boards
2008/03/24 Presenting unadjusted and adjusted estimates side by side
2008/03/24 When a client asks for a bad analysis
2008/03/12 Moving content to a private site
2008/03/12 ROC curve for an imperfect gold standard
2008/03/12 ROC curve for an imperfect gold standard
2008/03/12 Simplifying repeated measurements
2008/03/05 Losing web pages in the mass of information
2008/03/03 Calculating NNT for observational studies
2008/02/25 Assessing the assumption of an exponential distribution
2008/02/22 What is a critical value?
2008/01/31 Does prevalence affect sensitivity
2008/01/24 A simple example of a Kaplan-Meier curve
2008/01/22 How do you analyze safety data
2008/01/21 Finding only the important studies
2008/01/18 What have you changed your mind about
2008/01/07 The post-modern assault on evidence-based medicine, part 3
2008/01/05 High altitude effects on athletic performance
2008/01/04 What statistic should I use when?
2008/01/03 Type III error
2008/01/01 Cytel software has developed a Poisson
2008/01/01 I hate bad research examples
2008/01/01 New format for articles, books, and websites
2008/01/01 New personal pages
2008/01/01 Reliable diagnosis of cataracts
2008/01/01 Resources for Statistical Evidence in Medical Trials
2008/01/01 Reviews of “Statistical Evidence.”
2008/01/01 The glitter of…
2008/01/01 To be updated
2008/01/01 To be updated
2008/01/01 To be updated
2007/07/28 Bibliography of papers relating to predicting accrual in clinical trials
2007/06/19 Publication Bias references
2007/02/27 Stats
2007/02/27 Stats
2006/08/02 To be updated
2006/03/15 To be updated
2006/03/08 To be updated
2006/02/28 To be updated
2006/02/15 Difficulties in generalizing
2005/12/21 Vote for me
2005/12/19 Object oriented features of R
2005/12/13 Fractions are funny
2005/12/13 Group Sequential Monitoring of Clinical Trials in R
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
2005/10/15 Searching for information about the molasses with milk enema
2005/10/14 The fate of retracted articles
2005/10/14 Two nice R libraries
2005/10/13 A nonspecific diagnostic test
2005/10/12 Discovering gene information using OMIM
2005/10/12 Lost page
2005/10/11 A simple trick in R
2005/10/10 Responding to a critique of meta-analysis
2005/10/03 Sample size for a binomial confidence interval
2005/09/22 HIPAA and research
2005/09/19 An error slips through the peer review process
2005/09/15 Dishonesty in medical research
2005/09/15 Free statistics software
2005/09/13 Self experimentation
2005/09/12 Science mentoring
2005/09/09 Two articles debating equipoise
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
2005/08/10 Dates in Excel and R
2005/08/03 Converting an odds ratio to a relative risk
2005/08/02 A third search for the evidence
2005/08/02 Allegations of scientific misconduct (August 1, 2005)
2005/08/02 An inefficient approach to randomization (August 10, 2005)
2005/08/02 Effective communication about randomized clinical trials (created 2005-02-22)
2005/08/02 More on the weaknesses of randomized trials (created 2005-02-14)
2005/08/02 S-PLUS Clinical Safety Miner (March 10, 2005, Model, Software)
2005/08/01 Information content of a continuous distribution
2005/07/29 Expected value and moments
2005/07/29 Overview of evidence-based-medicine
2005/07/28 Moving R objects
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
2005/06/20 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
2005/06/07 Another search for evidence
2005/06/07 Another top ten study in EBM (February 14, 2005)
2005/06/07 I abhor Lilliefor and other tests of normality (created 2005-04-14).
2005/06/07 Ten research studies that anyone teaching EBM should be familiar with (January 17, 2005)
2005/06/07 When the F test is significant, but Tukey is not (created 2005-09-09)
2005/06/06 When can I stop my CQI study?
2005/05/31 The paired availability design
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 More on searching the literature
2005/05/17 What is critical thinking?
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
2005/04/19 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
2005/03/24 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 Lost page
2005/03/08 Sample size calculation for a nonparametric test
2005/03/08 Technology to end spam
2005/03/02 PowerPoint Counterpoint
2005/03/01 Growth curves
2005/03/01 The costs of a false positive test
2005/02/28 More on the top ten studies in EBM
2005/02/22 Taguchi methods
2005/02/21 Security tends to be
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
2005/01/27 Statistical Evidence in Medical Trials
2005/01/25 Re-weighting the data
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
2005/01/19 The Digital Object Identifier
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
2005/01/04 Spectrum Bias
2005/01/03 Monetary incentives
2005/01/01 A controversial meta-analysis
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 Standard deviation versus standard error (May 16, 2005)
2005/01/01 Statistical Analysis of Microarrays by Insightful Software
2005/01/01 The ethics of randomization
2005/01/01 The S+ CorrelatedData Library (May 19, 2005)
2005/01/01 Two articles in the Chance Wiki
2005/01/01 What alternative medicine can teach us about evidence-based medicine
2004/12/29 Testing for side effects
2004/12/28 Weblinks for December 2004
2004/12/24 Can you recommend a good book?
2004/12/24 Design and analysis of pilot studies
2004/12/24 Is the randomized trial the gold standard for research?
2004/12/24 Outcomes research
2004/12/24 Zhenya
2004/12/21 Subgroup analysis
2004/11/29 Confidence intervals
2004/11/29 Lost page
2004/11/17 Ratio of observations to independent variables
2004/07/15 Bluejacket Toastmasters Speech
2004/07/08 Testing for side effects
2004/07/01 Lost page
2004/06/24 Lost page
2004/05/26 What is information theory
2004/05/11 Information Theory Examples
2004/05/11 Information Theory Models
2004/05/11 Notes from JSM 2004
2004/05/11 Response to Olshansky and Dossey
2004/05/10 Information Theory
2004/03/17 Steps in a typical microarray analysis
2004/03/12 Steps for establishing a quality control program
2004/01/13 Steps in establishing validity/reliability
2004/01/01 Craniosacral therapy
2004/01/01 Deaf chairs, lost cake recipes, and a letter from Maria.
2004/01/01 I hate PowerPoint
2004/01/01 In vitro fertilization prayer study
2004/01/01 In vitro fertilization prayer study
2004/01/01 My efforts to kill PowerPoint
2004/01/01 Recent updates
2004/01/01 Weblog entries from the 2004 JSM
2004/01/01 What’s a good value for Cronbach’s Alpha?
2003/09/08 An introduction to diagnostic testing
2002/10/24 Likelihood ratio slide rule
2002/08/27 Data management for survival data
2002/06/24 Lost page
2001/11/02 Unequal group sizes
2001/10/11 BMJ letter
2001/10/11 Problems with a very small sample
2001/10/11 Steps in a descriptive model
2001/07/30 Parametric versus nonparametric tests
2001/07/30 Web polls
2001/01/24 Loading ODBC drivers from the Microsoft Data Access Pack
2001/01/15 Writing the methods section of your grant
2001/01/09 Odds ratio versus relative risk
2001/01/01 Documenting negative results in a research paper
2001/01/01 Ethics of a placebo group
2001/01/01 Quick sample size calculations
2001/01/01 Three things you need for a power calculation
2000/08/23 Binary outcome sample size calculations
2000/01/27 Stein’s paradox
1999/12/15 Circular data models
1999/11/15 Meta-analysis for a diagnostic
1999/11/15 Meta-analysis for a diagnostic
1999/10/15 Longitudinal data analysis
1999/09/27 Guidelines for logistic regression models
1999/09/21 Poisson regression model
1999/09/21 Steps in a typical linear regression analysis
1999/09/20 Importing spreadsheet data into SPSS
1999/09/20 Where do research ideas come from? by Ronan Conroy
1999/09/18 Documenting your SPSS data sets
1999/09/18 Inputting a two-by-two table into SPSS
1999/09/18 Modifying SPSS data
1999/09/13 Interim analysis
1999/09/13 Type II error
1999/09/13 Writing a research grant
1999/09/03 Asymmetric confidence intervals
1999/09/03 Bonferroni correction
1999/09/03 Chi-squared test
1999/09/03 Degrees of Freedom
1999/09/03 E notation
1999/09/03 General guide to data entry
1999/09/03 Page’s test
1999/09/03 Pilot study
1999/09/03 Sample size for a diagnostic study
1999/08/19 ROC curve
1999/08/18 All or nothing
1999/08/18 Date calculations in SPSS
1999/08/18 Developing a research hypothesis
1999/08/18 How to randomize
1999/08/18 Importing database files into SPSS
1999/08/18 R-squared
1999/08/18 Raynald’s SPSS Tools
1999/01/15 Merging files in SPSS
0001/01/01 A false sense of frugality
0001/01/01 New post
0001/01/01 New recommendation