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Sample size requirements for estimating intraclass correlations with desired precision
Author(s) -
Bonett Douglas G.
Publication year - 2002
Publication title -
statistics in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.996
H-Index - 183
eISSN - 1097-0258
pISSN - 0277-6715
DOI - 10.1002/sim.1108
Subject(s) - intraclass correlation , sample size determination , confidence interval , statistics , interval (graph theory) , sample (material) , mathematics , computer science , reproducibility , physics , combinatorics , thermodynamics
A method is developed to calculate the approximate number of subjects required to obtain an exact confidence interval of desired width for certain types of intraclass correlations in one‐way and two‐way ANOVA models. The sample size approximation is shown to be very accurate. Copyright © 2002 John Wiley & Sons, Ltd.