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National Cancer Institute U.S. National Institutes of Health www.cancer.gov
Biostatistics Branch. Developing statistical methods for epidemiology and collaborating on epidemiologic studies.

POWER V3.0

POWER is a windows-based program for computation of sample size and power for binary outcome studies (case-control and cohort studies) based on a logistic-like regression model with one covariate or two covariates (e.g., gene X exposure interactions).

Suggested reference for the POWER program:

Garcia-Closas M, Lubin JH. "Power and sample size calculations in case-control studies of gene-environmental interactions: Comments on different approaches." Am J Epidemiol 1999;149:689-93.

Questions? Contact: DCEG Power Questions