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The Stata Journal
Volume 4 Number 4: pp. 421-428



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Confidence intervals for the kappa statistic

Michael E. Reichenheim
Instituto de Medicina Social
Universidade do Estado do Rio de Janeiro, Brazil
Abstract.   The command kapci calculates 100(1 - α)% confidence intervals for the kappa statistic using an analytical method in the case of dichotomous variables or bootstrap for more complex situations. For instance, kapci allows estimating CI for polychotomous variables using weighted kappa or for cases in which there are more than 2 raters/replications.
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