@article{81fa67d06cdf4409b2954408ef174b53,
title = "Testing equality of correlations of two paired binary responses from two treated groups in a randomized trial",
abstract = "We explore measuring Scleroderma patient disease improvement at the paired body part level and account for their correlation with the long term goal of possibly redefining disease progression using a shorter clinical examination. We propose using a binary outcome to measure disease progression at each paired body part level, construct tests for assessing equality of the correlations between groups for each paired body part and determine sample size requirements for such tests in a two-arm randomized clinical trial. Simulations are performed to evaluate properties of the tests and the accuracy of our sample size formulae. We demonstrate our method with data from a multi-center two-arm randomized clinical trial.",
keywords = "Correlated binary data, Sample size, Score test, Wald test",
author = "Yanbo Pei and Tang, {Man Lai} and Wong, {Weng Kee} and Tang, {Nian Sheng}",
note = "Funding Information: The authors thank an associate editor and two referees for several constructive suggestions. M. L. Tang thanks Chow, Daisy Hoi-Sze, for her endless support. W. K. Wong spent part of his sabbatical at HKBU and worked on this paper. He thanks the Department of Mathematics for the hospitality during his visit. M. L. Tang{\textquoteright}s research was fully supported by two grants from the Research Grant Council of the Hong Kong Special Administrative Region (projects HKBU261007 and HKBU261508) and a grant from the Hong Kong Baptist University (project FRG2/08-09/066). Dr. Tang NS{\textquoteright}s work was supported by a grant from NSFC (project 10961026).",
year = "2011",
month = may,
doi = "10.1080/10543406.2010.482682",
language = "English",
volume = "21",
pages = "511--525",
journal = "Journal of Biopharmaceutical Statistics",
issn = "1054-3406",
publisher = "Taylor and Francis Ltd.",
number = "3",
}