Nonparametric test for stratum effects in the cox model with interval-censored data

Xiaodong Fan, Shishun Zhao and Jianguo Sun

Communications in Statistics - Theory and Methods, 2019, vol. 48, issue 2, 300-310

Abstract: The testing of the stratum effects in the Cox model is an important and commonly asked question in medical research as well as in many other fields. In this paper, we will discuss the problem where one observes interval-censored failure time data and generalize the procedure given in Sun and Yang (2000) for right-censored data. The asymptotic distribution of the new test statistic is established and the simulation study conducted for the evaluation of the finite sample properties of the method suggests that the generalized procedure seems to work well for practical situations. An application is provided.

Date: 2019
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DOI: 10.1080/03610926.2017.1408832

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