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An Approximation to the Partial Likelihood for Cox's Regression Model of the Analysis of Survival Data

机译:生存数据分析的Cox回归模型部分似然的逼近

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An approximation applicable to the case of tied observations with large multiplicities of failures is considered in association with the general regression model for the hazard function. The approximation is shown to be good when the number of actual failures at the longest time is small relative to the number at risk. Results show that can safely be used for tests of significance and estimation of the hazard function. Results are compared for two small sets of data, the second extracted from larger set of socio-legal data.

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