Omnibus Tests for Comparison of Competing
نویسندگان
چکیده
This paper develops omnibus tests for comparing cause-speciic hazard rates and cumulative incidence functions at speciied covariate levels. Conndence bands for the diierence and the ratio of two conditional cumulative incidence functions are also constructed. The omnibus test is formulated in terms of a test process given by a weighted diierence of estimates of cumulative cause-speciic hazard rates under Cox proportional hazards models. A simulation procedure is devised for sampling from the null distribution of the test process, leading to graphical and numerical techniques for detecting signiicant diierences in the risks. The approach is applied to a cohort study of type-speciic HIV infection rates.
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