Semi- and non-parametric approaches to individualized treatment regimes in the presence of causal mediation
存在因果中介时个体化治疗规则的半参数与非参数方法AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要明确研究因果中介、条件中介效应及由此构造的个体化治疗规则,直接属于因果推断。
存在因果中介时个体化治疗规则的半参数与非参数方法AI 解读 ↓
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Individualized treatment rules (ITRs) map an individual patient's characteristics to their recommended treatment value. Typically, the optimal ITR is defined as the rule which maximizes a mean counterfactual outcome; the resulting ITR maximizes the effect of treatment along all causal pathways to the outcome, including indirect pathways through mediating variables. Although maximizing the total effect is often sufficient, explicitly incorporating causal mediation in an ITR analysis has several potential benefits such as enhanced interpretability, and additional flexibility in targeting specific causal pathways. For this purpose, we introduce novel Bayesian semiparametric and nonparametric estimators for conditional mediation effects in the presence of multiple mediators and show how they can be used to estimate optimal ITRs. We demonstrate the proposed methodology via an application to optimal kidney allocation with hepatitis C positive donors.