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[Calculation of sample size for the detection of relative risk with a predetermined confidence level and power]
1Département de médecine sociale et préventive, Faculté de Médecine, Université Laval, Québec.
Revue D'Epidemiologie Et De Sante Publique
|January 1, 1990
Abstract:
Herein, a method of calculation is proposed for determining the number of subjects required for risk ratio detection, the significance level (alpha) and the power (1 - beta) being fixed in advance. Risk ratios under consideration are rate ratios, proportion ratios and odds ratios. The method of calculation is based on the logarithmic transformation.