Course TopicsPower analyses and sample size calculations are important parts of many research projects. Often, before data are even collected, it is necessary to calculate and justify the required ...

Determination of sample size is one of the critical decisions in forming a customer survey. Though you can find numerable statistical guides, and sample size calculators available, many people find ...

The selection of suitable outcomes and sample size calculation are critical factors in the design of a randomised controlled trial (RCT). The goal of this study was to identify the range of ...

We derive an explicit form for power/sample size calculation based on these two tests. A number of simulation studies have been used to illustrate the efficiency of the tests for the case-cohort ...

S. R. Wilson, I. Gordon, Calculating Sample Sizes in the Presence of Confounding Variables, Journal of the Royal Statistical Society. Series C (Applied Statistics), Vol. 35, No. 2 (1986), pp. 207-213 ...