Stuart R. Lipsitz, Michael Parzen, Sample Size Calculations for Non-Randomized Studies, Journal of the Royal Statistical Society. Series D (The Statistician), Vol. 44, No. 1 (1995), pp. 81-90 ...

How to analyse and report RCTs using Stata and R. Contribute to icostatistics/rct-cookbook development by creating an account on GitHub.

Sample size calculations for planning these two-stage randomized trials with failure time outcomes are challenging because the variances of common test statistics depend in a complex manner on the ...

Non-probability sampling means that you use some other criteria or convenience to select the sample, and you cannot use statistical formulas to calculate the sample size.

Learn the basics of sample size and confidence level for usability metrics, and how to use formulas and tools to calculate them. Improve your usability measurement and communication.

It is recommended that RCT researchers strictly follow the CONSORT guidelines, use scientific methods to calculate the sample size, and report the calculation of the sample size in detail, including ...