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Sample size justification
2013/12/18
PMean: Sample size for comparing two diagnostic tests
2008/01/09
Too much power and precision?
2007/08/09
Justifying the sample size for a microarray study
2007/04/09
What is an adequate sample size for establishing validity and reliability?
2007/03/26
IRB review of a pilot study
2007/01/30
Do your own power and sample size calculations
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
2006/11/02
Additions and improvements to my web pages
2006/10/23
Is a 10% shortfall in sample size critical?
2006/07/28
R libraries for sample size justification
2006/03/30
How many charts should I pull?
2005/10/03
Sample size for a binomial confidence interval
2005/08/12
Sample size for a binary endpoint
2005/07/11
Confidence interval for a correlation coefficient
2005/03/08
Sample size calculation for a nonparametric test
2004/11/30
Sample size for cluster randomized trials
2004/11/24
Unequal sample sizes
2004/11/05
Confidence intervals for complex research designs
2004/09/22
Sample size for an ordinal outcome
2004/07/23
Sample size calculations in studies with a baseline
2004/07/05
Sample size for a diagnostic test
2004/05/20
Sample size calculation example
2004/05/13
Sample size for a survival data model
2003/05/09
Cluster randomization
2001/01/19
The minimal impact of population size on power and precision
2000/09/28
Sample size for the Mann-Whitney U test
2000/08/23
Binary outcome sample size calculations
2000/01/26
Sample size for a confidence interval
1999/09/03
Sample size for a diagnostic study