Causal inference with invalid instruments: post-selection problems and a solution using searching and sampling
Causal inference with invalid instruments: post-selection problems and a solution using searching and sampling
复制标题
使用无效仪器进行因果推断:选择后问题以及使用搜索和采样的解决方案
DOI:
10.1093/jrsssb/qkad049
复制
发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Guo, Zijian
中科院分区:
文献类型:
--
作者:
Guo, Zijian
Instrumental variable methods are among the most commonly used causal inference approaches to deal with unmeasured confounders in observational studies. The presence of invalid instruments is the primary concern for practical applications, and a fast-growing area of research is inference for the causal effect with possibly invalid instruments. This paper illustrates that the existing confidence intervals may undercover when the valid and invalid instruments are hard to separate in a data-dependent way. To address this, we construct uniformly valid confidence intervals that are robust to the mistakes in separating valid and invalid instruments. We propose to search for a range of treatment effect values that lead to sufficiently many valid instruments. We further devise a novel sampling method, which, together with searching, leads to a more precise confidence interval. Our proposed searching and sampling confidence intervals are uniformly valid and achieve the parametric length under the finite-sample majority and plurality rules. We apply our proposal to examine the effect of education on earnings. The proposed method is implemented in the R package RobustIV available from CRAN.
登录
查看更多内容
影响因子:
6.3
作者:
Zijian Guo;Hyunseung Kang;T. T. Cai;Dylan S. Small
通讯作者:
Dylan S. Small
影响因子:
2.5
作者:
Gyuhyeong Goh;Jisang Yu
通讯作者:
Jisang Yu
影响因子:
1.9
作者:
Kang, Hyunseung;Lee, Youjin;Small, Dylan S.
通讯作者:
Small, Dylan S.
DOI:
10.1111/rssb.12275
发表时间:
2018-09-01
影响因子:
5.8
作者:
Guo, Zijian;Kang, Hyunseung;Small, Dylan S.
通讯作者:
Small, Dylan S.
DOI:
--
发表时间:
2022
期刊:
影响因子:
--
作者:
Zijian Guo;P. Bühlmann
通讯作者:
P. Bühlmann