Power calculation for multiple comparisons of two independent samples on p variables using PROC IML in SAS.

Three SAS programs for determining power calculations for the Bonferroni-Holm and Hochberg multiple comparisons of two independent samples on p variables are described. Input to the three programs includes sample size to be considered, the alpha level, the number of replications for the simulations...

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Bibliographic Details
Published in:	Educational & Psychological Measurement Vol. 58; no. 2; pp. 307 - 312
Main Author:	Algina, James
Format:	Article
Published:	Sage Publications Inc. April 1998
Subjects:	Multiple comparisons (Statistics) Statistical power analysis Statistical software Computer software
Online Access:	View this record in EBSCOhost

Description
Summary:	Three SAS programs for determining power calculations for the Bonferroni-Holm and Hochberg multiple comparisons of two independent samples on p variables are described. Input to the three programs includes sample size to be considered, the alpha level, the number of replications for the simulations, and information about effect sizes and covariance matrix. Each program then calculates any-variable power, all-variable power, individual power, and average per-variable power for each procedure. An illustration of the programs' use and details regarding its availability are provided.