Power and sample size for a collection of 2 x 2 tables.

A. Munoz, B. Rosner

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


A simple approximation is presented for the asymptotic power of the Mantel-Haenszel procedure for testing the hypothesis that the common odds ratio in a collection of 2 x 2 tables is unity. This approximation is particularly useful in evaluating the power of a study with several strata which reaches negative conclusions. The corresponding formula is also provided for estimating the sample size before such a study has begun, by approximating the margins of the stratum-specific tables with estimates obtained from pre-existing data.-from Authors

Original languageEnglish (US)
Pages (from-to)995-1004
Number of pages10
Issue number4
StatePublished - Jan 1 1984
Externally publishedYes

ASJC Scopus subject areas

  • Statistics and Probability
  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)
  • Agricultural and Biological Sciences(all)
  • Applied Mathematics


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