Abstract
ABSTRACTHomogeneity is a nonnegligible condition in the statistical analysis of the stratified bilateral data. The correlation between responses from two paired body parts should be taken into account to avoid biased or misleading results. In this article, we derive four test statistics (i.e., likelihood ratio statistic TL, Wald-type statistic TW, and score statistics and ) for testing common ratios of two proportions across strata under the assumption of equal correlation coefficient within each stratum. Monte Carlo simulations show that the score test () generally produces robust Type I error and satisfactory power. Two real examples are used to demonstrate the performance of the four proposed tests. Supplementary materials for this article are available online.
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