| COX模型的残差分析和影响诊断 |
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| 引用本文： | 郜艳晖,何大卫. COX模型的残差分析和影响诊断[J]. 现代预防医学, 2000, 27(1): 48-50 |
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| 作者姓名： | 郜艳晖 何大卫 |
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| 作者单位： | 1. 广东药学院卫生统计教研室,广州510224
2. 山西医科大学卫生统计教研室 |
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| 摘 要： | 目的 :本文介绍了识别 COX模型中强影响点的诊断方法。方法 :利用 COX回归模型的两种残差和经验影响函数识别 COX模型的强影响点 ,并通过实例比较两种方法的优劣。结果 :实例显示对影响函数绝对值较大的点 ,如明显偏离其它数据点 ,可诊断为强影响点。结论 :影响函数可有效地诊断 COX模型的强影响点 ,而残差分析效果平平 ,建议实际应用中采用前者。
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| 关 键 词： | COX模型 回归诊断 影响函数 残差 |
RESIDUAL ANALYSIS AND INFLUENCE DIAGNOSTIC OF COX MODEL. |
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| GAO Yan-hui,HE Da-wei. RESIDUAL ANALYSIS AND INFLUENCE DIAGNOSTIC OF COX MODEL.[J]. Modern Preventive Medicine, 2000, 27(1): 48-50 |
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| Authors: | GAO Yan-hui HE Da-wei |
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| Affiliation: | GAO Yan hui 1,HE Da wei 2.1.Guangdong College of Pharmacy,Guangzhou 510224,2.Department of Health Statistics,Shanxi Medical University,Taiyuan 030001,China. |
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| Abstract: | Objective:This paper introduces diagnostic methods of identifying the influence points of COX model.Method:Apply two kinds of residual theory and influence of COX model to diagnosing the influence point of COX model,and compares residual analysis to influence analysis.Result:The analysis of example data shows that the points are considered as influence points,whose influence function absolute value is larger than the others.Conclusion:Influence function may identify effectively the influential point,while the effect of residual analysis is not well.So we suggest using the former in practical application. |
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| Keywords: | COX model Regression diagnostic Influence function Residual |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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