title: On Inference for Kendall's τ within a Longitudinal Data Setting.
abstract: Kendall's τ is a non-parametric measure of correlation based on ranks and is used in a wide range of research disciplines. Although methods are available for making inference about Kendall's τ, none has been extended to modeling multiple Kendall's τs arising in longitudinal data analysis. Compounding this problem is the pervasive issue of missing data in such study designs. In this paper, we develop a novel approach to provide inference about Kendall's τ within a longitudinal study setting under both complete and missing data. The proposed approach is illustrated with simulated data and applied to an HIV prevention study.
authors.affiliation: Hospital for Special Surgery, Department of Public Health, Weill Medical College of Cornell University, New York, NY 10021.
authors.forename: Yan
authors.initials: Y
authors.lastname: Ma
keywords: HIV prevention; Inverse probability weighting; Kendall’s τ; Missing at random; U-statistics
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