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| 鞅残差在Cox回归模型诊断中的应用 | |
| 引用本文： | 余红梅,何大卫,徐勇勇. 鞅残差在Cox回归模型诊断中的应用[J]. 现代预防医学, 2001, 28(1): 10-11 |
| 作者姓名： | 余红梅 何大卫 徐勇勇 |
| 作者单位： | 1. 第四军医大学卫生统计学教研室, 2. 山西医科大学卫生统计学教研室, |
| 基金项目： | 本题目为全国统计科学研究项目(编号99019)、山西省归国人员基金项目 |
| 摘 要： | 目的：探讨Cox模型中某给定连续变量对生存效应的最佳函数形式。方法：不含该变量的Cox模型下的鞅残差对该协变量作图可揭示该变量在全模型中的函数形式。结果：实例分析表明，Loess平滑鞅残差图可用于Cox模型中协变量函数形式的确定。结论：建议分析者把鞅残差图纳入Cox模型分析中，对协变量的生存效应作出正确估计。 |
| 关 键 词： | Cox比例风险模型 回归诊断 鞅残差 卫生统计 |
| 文章编号： | 1003—8507(2001)01-0010—02 |
| 修稿时间： | 2000-07-06 |
APPLICATION OF MARTINGALERESIDUAL IN COX MODEL DIAGNOSTIC-DETERMINING THEFUNCTIONAL FORM FOR THE GIVEN COVARIATE |
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| YU Hong-mei,HE Da-wei,XU Yong-yong. APPLICATION OF MARTINGALERESIDUAL IN COX MODEL DIAGNOSTIC-DETERMINING THEFUNCTIONAL FORM FOR THE GIVEN COVARIATE[J]. Modern Preventive Medicine, 2001, 28(1): 10-11 | |
| Authors: | YU Hong-mei HE Da-wei XU Yong-yong |
| Affiliation: | YU Hong mei,HE Da wei,XU Yong yong.Dept Health Statistics,The Fourth Military Medical University,710032. |
| Abstract: | Objective:To discuss the best functional form for a given continuous covariate to explain its effect on survival in Cox model.Methods:Plotting martingale residuals of a Cox model not including this covariate against the value of the given covariate can illustrate the functional form for the covariate in the complete model.Rusults:Two examples showed that a loess smoothed fit of the martingale residual plot could be used to determine the functional form for a covariate in the Cox model.Conclusion:We suggest that analysts bring the martingale residual plot into Cox model analysis to get correct estimates of the effect on survival for a given covariate. |
| Keywords: | Cox proportional hazards model Regression diagnosis Martingale residual |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |