title: Reliability of anthropometric methods and replicate measurements.
abstract: The Spearman-Brown Prophesy formula, derived from psychometrics, may be used in anthropometric studies to describe the relationship between the intraclass reliability coefficient for a single measurement and the reliability resulting from the mean of replicate measurements. This theory may be applied to determine expected reliabilities of anthropometric protocols using replicate measurements and to determine the numbers of replicate measurements necessary to achieve desired levels of reliability.
authors.affiliation: Division of Human Development & Nutrition, University of Minnesota, School of Public Health, Minneapolis 55455.
authors.forename: J H
authors.initials: JH
authors.lastname: Himes
mesh_terms: D000704:Analysis of Variance; D000885:Anthropology, Physical / Q000592:standards*; D000886:Anthropometry / Q000379:methods*; D006801:Humans