Sample size and statistical power in reproductive research

Jeffrey F. Peipert, William Metheny, Kenneth Schulz

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The calculation of sample size should be an integral part of the planning stages of all research projects to avoid wasting time, money, and valuable resources. The necessary information for sample size calculations includes the alpha (type I) error level, the beta (type II) error, delta (or the difference you would like to be able to detect), and, for continuous variables, the variance. We review these terns and outline their importance in the calculation of sample size and statistical power. When necessary, the investigator should seek expertise and advice to perform these calculations.

Original languageEnglish (US)
Pages (from-to)302-305
Number of pages4
JournalObstetrics and Gynecology
Volume86
Issue number2
DOIs
StatePublished - Jan 1 1995
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Obstetrics and Gynecology

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Sample size and statistical power in reproductive research. / Peipert, Jeffrey F.; Metheny, William; Schulz, Kenneth.

In: Obstetrics and Gynecology, Vol. 86, No. 2, 01.01.1995, p. 302-305.

Research output: Contribution to journalArticle

Peipert, Jeffrey F. ; Metheny, William ; Schulz, Kenneth. / Sample size and statistical power in reproductive research. In: Obstetrics and Gynecology. 1995 ; Vol. 86, No. 2. pp. 302-305.
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