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PubMed · 10341749

A relative power table for nested matched case-control studies.

D Pang
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Abstract

OBJECTIVE: To calculate relative powers for nested case-control studies for different values of both relative risk and numbers of controls per case, given a fixed number of cases available for analysis. METHODS: Algebraic and numerical methods. RESULTS: In nested case-control studies, statistical power is a function of relative risk, rarity of exposure, number of case-control sets, and the number of controls per case. CONCLUSION: The dictum that sufficient power will be obtained in a nested case-control study by selecting only four controls per case cannot be sustained. Appropriate numbers need to be calculated for specific studies.

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Case-Control StudiesHumansModels, StatisticalPatient SelectionReference ValuesResearch DesignJournal Article

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D Pang. 1999. A relative power table for nested matched case-control studies.. https://doi.org/10.1136/oem.56.1.67

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