Semiparametric Double Balancing Score Estimation for Incomplete Data With Ignorable Missingness
可忽略缺失数据的半参数双平衡得分估计
When estimating the marginal mean response with missing observations, a critical issue is robustness to model misspecification. In this article, we propose a semiparametric estimation method with extended double robustness that attains the optimal efficiency under less stringent requirement for model specifications than the doubly robust estimators. In this semiparametric estimation, covariate information is collapsed into a two-dimensional score S, with one dimension for…