.png){kind=icon}
返回
Rerandomization in Stratified Randomized Experiments
.png){kind=icon}
OA
AI
DOI：10.1080/01621459.2021.1990767.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Stratification and rerandomization are two well-known methods used in randomized experiments for balancing the baseline covariates. Renowned scholars in experimental design have recommended combining these two methods; however, limited studies have addressed the statistical properties of this combination. This article proposes two rerandomization methods to be used in stratified randomized experiments, based on the overall and stratum-specific Mahalanobis distances. The first method is applicable for nearly arbitrary numbers of strata, strata sizes, and stratum-specific proportions of the treated units. The second method, which is generally more efficient than the first method, is suitable for situations in which the number of strata is fixed with their sizes tending to infinity. Under the randomization inference framework, we obtain the asymptotic distributions of estimators used in these methods and the formulas of variance reduction when compared to stratified randomization. Our analysis does not require any modeling assumption regarding the potential outcomes. Moreover, we provide asymptotically conservative variance estimators and confidence intervals for the average treatment effect. The advantages of the proposed methods are exhibited through an extensive simulation study and a real-data example.
Keyword:
Blocking
Causal inference
Covariate adjustment
Randomization inference
Stratification
期刊
J
IF:
3
论文数:
5.2K
被引数:
4.8W
机构
引用论文
Two Cubic Phases of 1,2-Bis(4′-n-alkoxybenzoyl)hydrazines (BABH-n)1，2-双 (4 ′-n-烷氧基苯甲酰基) 肼的两个立方相 (BABH-n)
PREAI
分享收藏分享收藏Experimental Study on Micro-Machinability of Hardened Tool Steel in Profile Micro-Milling硬化工具钢在轮廓微铣削中的微切削性能实验研究
PREAI
分享收藏Aloe-emodin inhibits HER-2 expression through the downregulation of Y-box binding protein-1 in HER-2-overexpressing human breast cancer cells芦荟大黄素通过下调y-box结合蛋白-1抑制HER-2-overexpressing人乳腺癌细胞HER-2表达.png)
Oncotarget
OAAI
OncotargetIF0
OAAI分享收藏
查看更多内容