Patient enrollment in medical trials: Selection bias in a randomized experiment
医疗试验中的患者入组:随机实验的选择偏差AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要研究随机实验处理效应的外推,并用 Roy 模型分析患者是否参与试验的选择。
医疗试验中的患者入组:随机实验的选择偏差AI 解读 ↓
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Self-selection can bias estimates of treatment effects from randomized experiments if one is interested in extrapolating results to the general population. This paper notes that there is an isomorphism between the Roy model for the sorting of workers into sectors and the decision of subjects to participate in randomized experiments. The main implication is that, as the probability of receiving active treatment rises, patients who are less optimistic about new treatment will begin to enroll and estimates of treatment effects will fall. This, in turn, implies that selection bias is positive. These findings are confirmed with data from trials of ulcer medications.