CHI-SQUARED GOODNESS-OF-FIT TESTS FOR THE PROPORTIONAL HAZARDS REGRESSION-MODEL
成果类型：
Article
署名作者：
SCHOENFELD, D
刊物名称：
BIOMETRIKA
ISSN/ISSBN：
0006-3444
发表日期：
1980
页码：
145153
关键词：
摘要：
A class of omnibus chi-squared goodness-of-fit is presented for the model, relating failure time to covariate values, proposed by Cox (1972). These tests are based on the expected and observed frequency that a data point, representing a failure with associated covariates, falls into one of L mutually exclusive categories. Different partitions of the space of covariate values and failure time will yield different tests. Certain partitions are suggested for the goodness-of-fit problems commonly encountered in clinical trials [i.e., patient''s death.].