Checking to the Proportional Hazards Assumption of the Cox′s Proportional Hazards Model.
10.3969/j.issn.1002-3674.2001.01.005
- VernacularTitle:检验Cox模型成比例危险性假设的探讨
- Author:
Chuandong MA
;
Wei DONG
- Publication Type:Journal Article
- From:
Chinese Journal of Health Statistics
2001;(1):15-16
- CountryChina
- Language:Chinese
-
Abstract:
Objective Exploring how to check the proportional hazards assumption of the Cox model,and the solutions to non-proportional hazards between the covariates and the hazard function.Methods With a example data set of Ⅲc stage ovarian serous cystadenocarcina,illustrating how to use graphical methods to check the proportional hazards assumption of the Cox model.Results the predictor of post-surgery administering medicine times violated the proportional hazards assumption of the Cox model.Conclusion when using the Cox model to analyze the predictors of survival time,checking whether the predictors violate the proportional hazards assumption of the Cox model or not should be paid attention to.
