HODGES-LEHMANN POINT ESTIMATES OF TREATMENT EFFECT IN OBSERVATIONAL STUDIES

被引:44
作者
ROSENBAUM, PR
机构
关键词
RANK TEST; SENSITIVITY ANALYSIS;
D O I
10.2307/2291264
中图分类号
O21 [概率论与数理统计]; C8 [统计学];
学科分类号
020208 ; 070103 ; 0714 ;
摘要
A Hodges-Lehmann point estimate of an additive treatment effect is a robust estimate derived from the randomization distribution of a rank test. This article shows how to carry out a sensitivity analysis for such an estimate in an observational study where treatments are not randomly assigned. Two cases are discussed in detail: matched pairs and the comparison of two unmatched groups. The method uses a model for the distribution of treatment assignments when hidden biases may be present. This model has previously been used for sensitivity analysis of significance levels and confidence intervals.
引用
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页码:1250 / 1253
页数:4
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