SHARP BOUNDS ON THE VARIANCE IN RANDOMIZED EXPERIMENTS
SHARP BOUNDS ON THE VARIANCE IN RANDOMIZED EXPERIMENTS
复制标题
随机实验中方差的明显界限
DOI:
10.1214/13-aos1200
复制
发表时间:
2014
影响因子:
4.5
通讯作者:
Donald K. K. Lee
中科院分区:
文献类型:
--
作者:
P. Aronow;D. Green;Donald K. K. Lee
We propose a consistent estimator of sharp bounds on the variance of the difference-in-means estimator in completely randomized experiments. Generalizing Robins [Stat. Med. 7 (1988) 773-785], our results resolve a well-known identification problem in causal inference posed by Neyman [Statist. Sci. 5 (1990) 465-472. Reprint of the original 1923 paper]. A practical implication of our results is that the upper bound estimator facilitates the asymptotically narrowest conservative Wald-type confidence intervals, with applications in randomized controlled and clinical trials.