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Simple improved confidence intervals for comparing matched proportions
Author(s) -
Agresti Alan,
Min Yongyi
Publication year - 2005
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.1781
Subject(s) - confidence interval , statistics , odds ratio , mathematics , coverage probability , interval estimation , simple (philosophy) , robust confidence intervals , binary data , odds , binary number , cdf based nonparametric confidence interval , logistic regression , epistemology , philosophy , arithmetic
For binary matched‐pairs data, this article discusses interval estimation of the difference of probabilities and an odds ratio for comparing ‘success’ probabilities. We present simple improvements of the commonly used Wald confidence intervals for these parameters. The improvement of the interval for the difference of probabilities is to add two observations to each sample before applying it. The improvement for estimating an odds ratio transforms a confidence interval for a single proportion. Copyright © 2005 John Wiley & Sons, Ltd.