Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/7767
Title: Nonparametric comparison for panel count data with unequal observation processes
Authors: Zhao, X 
Sun, J
Keywords: Counting processes
Medical follow-up study
Nonparametric comparison
Panel count data
Unequal observation scheme
Issue Date: 2011
Publisher: Wiley-Blackwell
Source: Biometrics, 2011, v. 67, no. 3, p. 770-779 How to cite?
Journal: Biometrics 
Abstract: This article considers nonparametric comparison of several treatment groups based on panel count data, which often occur in, among others, medical follow-up studies and reliability experiments concerning recurrent events. For the problem, most of the existing procedures require that observation processes are identical across different treatment groups among other requirements. We propose a new class of nonparametric test procedures that allow different observation processes. The new test statistics are constructed based on the integrated weighted differences between the estimated mean functions of the underlying recurrent event processes. The asymptotic distributions of the proposed test statistics are established and their finite-sample properties are examined through Monte Carlo simulations, which indicate that the proposed approach works well for practical situations. An illustrative example is provided.
URI: http://hdl.handle.net/10397/7767
DOI: 10.1111/j.1541-0420.2010.01504.x
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