Cost considerations and sample size requirements in cohort and case-control studies.
Three methods for incorporating cost considerations into sample size determination for cohort and case-control studies are considered. It is found that when the costs of obtaining exposed and nonexposed subjects or of obtaining case and control subjects differ, an improvement in design can be achieved.
D003365:Costs and Cost Analysis; D004812:Epidemiologic Methods; D006801:Humans; D012494:Sampling Studies