Le C T, Grambsch P M, Louis T A
Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis 55455.
Biometrics. 1994 Mar;50(1):213-9.
An application of the method of rank correlation is proposed for testing independence between a censored survival time and an ordinal covariate. The test statistic counts the number of concordances minus the number of discordances at each time with event(s) and adds across times; it is expressible as a score statistic within the proportional hazards framework. The proposed test includes, as a special case, a generalization of Jonckheere's test against ordered alternatives and as applied to the analysis of categorical data, it can be seen as a generalization of the Mantel-Haenszel procedure.
本文提出了一种秩相关方法的应用，用于检验删失生存时间与有序协变量之间的独立性。检验统计量计算每次出现事件时的一致数减去不一致数，并对各时间点求和；在比例风险框架内，它可表示为一个得分统计量。作为一个特例，所提出的检验包括对针对有序备择假设的琼克尔检验的推广，并且应用于分类数据分析时，它可被视为曼特尔-亨泽尔程序的推广。
