A program for the computation of power and determination of sample size in hierarchical experimental designs.
We have devised a program that allows computation of the power of F-test, and hence determination of appropriate sample and subsample sizes, in the context of the one-way hierarchical analysis of variance with fixed effects. The power at a fixed alternative is an increasing function of the sample size and of the subsample size. The program makes it easy to obtain the power of F-test for a range of values of sample and subsample sizes, and therefore the appropriate sizes based on a desired power. The program can be used for the 'ordinary' case of the one-way analysis of variance, as well as for hierarchical analysis of variance with two stages of sampling. Examples are given of the practical use of the program.
Institute of Anatomy, University of Lausanne, Switzerland.
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Jeanprêtre
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Kraftsik
D000704:Analysis of Variance; D008432:Mathematical Computing; D009716:Numerical Analysis, Computer-Assisted; D012107:Research Design; D012494:Sampling Studies; D012984:Software; D012985:Software Design