SAMPLE SIZES FOR ESTIMATION OF THE ODDS RATIO IN UNMATCHED CASE-CONTROL STUDIES1
- 1 July 1984
- journal article
- research article
- Published by Oxford University Press (OUP) in American Journal of Epidemiology
- Vol. 120 (1) , 145-153
- https://doi.org/10.1093/oxfordjournals.aje.a113863
Abstract
A method is presented to obtain sample sizes for cases and controls that are required to provide approximate confidence intervals on the log odds ratio of predetermined width 2d and probability of coverage as a function of assumed exposure rates in the control group, assumed odds ratio ψ required d, and ratio C:1 of controls to cases.Keywords
This publication has 1 reference indexed in Scilit:
- THE VALIDITY OF APPROXIMATION METHODS FOR INTERVAL ESTIMATION OF THE ODDS RATIOAmerican Journal of Epidemiology, 1981