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Sample size requirements for the comparison of two or more coefficients of inter‐observer agreement
Author(s) -
Donner Allan
Publication year - 1998
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/(sici)1097-0258(19980530)17:10<1157::aid-sim792>3.0.co;2-w
Subject(s) - concordance , sample size determination , statistics , observer (physics) , mathematics , econometrics , sample (material) , computer science , medicine , physics , thermodynamics , quantum mechanics
I provide sample size formulae and tables for the design of studies that compare two or more coefficients of inter‐observer agreement or concordance. Such studies may arise, for example, when interest centres on assessment of how measures of inter‐observer agreement vary across different patient subgroups or treatment centres. I consider cases of both a continuous and a dichotomous outcome measure. Three examples illustrate the results. © 1998 John Wiley & Sons, Ltd.