Re: [R] Help for Use of R software

Simon, I suggest you look at the web page https://cran.r-project.org/web/packages/SampleSize4ClinicalTrials/SampleSize4ClinicalTrials.pdf The package SampleSize4Clinical Trials appears to be exactly what you want. I believe it can produce a sample size estimate comparing two proportions for non

Re: [R] Help for Use of R software

I get the sense that you need further background on statistical testing issues and suggest this resource: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3510268/ -- David Winsemius, MD, MPH On 6/6/21 10:06 AM, Lee Simon wrote: Dear Sir/Madam, May I seek for your kind help for the use of R s

Re: [R] Help for Use of R software

A google-search of the term brings up as its first hit a link to a page on the rdocumentation.org website that indicates that theTrialSize package(version1.4) has a function named "TwoSampleProportion.NIS". If you executed these