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[How many subjects do I need to power my study?].

Sergio R Muñoz Navarro1

  • 1Departamento de Salud Pública – CIGES, Facultad de Medicina, Universidad de la Frontera, Chile. Address: Montt #112, Temuco, Chile.

Medwave
|October 30, 2014
PubMed
Summary

Determining the correct sample size is crucial for the statistical power of epidemiological studies. This tool and the Epidat software demonstrate sample size calculations for prevalence, case-control, and cohort studies.

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