Asymptotic Relative Efficiency of Survival Tests with Covariates
含协变量生存检验的渐近相对效率
Comparison of survival for two groups of patients when adjusting for covariates is a standard problem in clinical trials. In this paper the general life table models developed by Cox (1972) and the stratified log rank test (Mantel & Haenszel, 1959; Peto & Peto, 1972) are compared. An analytical expression and numerical results for the asymptotic relative efficiency of the two tests are given when there is no censoring. Stratification on the covariates is asymptotically as…