On Comparing Cumulative Incidence Functions Using an Empirical Likelihood Ratio Type Test

Hammou El Barmi and Lahcen El Bermi

Communications in Statistics - Theory and Methods, 2015, vol. 44, issue 23, 4940-4952

Abstract: We consider the competing risks problem with two risks and develop empirical likelihood ratio type tests for testing the null hypothesis that the cumulative incidence functions corresponding to these two risks are equal against the alternatives: (a) they are not equal and (b) they are linearly ordered. The asymptotic null distributions of the proposed test statistics are shown to have simple distribution-free representations in terms of a standard Brownian motion process. The results of a simulation study indicate that the proposed test for testing for the presence of the linear order is more powerful than a test designed for the same situation in Aly et al. (1994). To illustrate the theoretical results, we discuss an example involving survival times of mice exposed to radiation.

Date: 2015
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DOI: 10.1080/03610926.2013.804564

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