On a necessary and sufficient identification condition of optimal treatment regimes with an instrumental variable

@article{Cui2020OnAN,
  title={On a necessary and sufficient identification condition of optimal treatment regimes with an instrumental variable},
  author={Yifan Cui and Eric J. Tchetgen Tchetgen},
  journal={arXiv: Statistics Theory},
  year={2020}
}
Unmeasured confounding is a threat to causal inference and individualized decision making. Similar to Cui and Tchetgen Tchetgen (2020); Qiu et al. (2020); Han (2020a), we consider the problem of identification of optimal individualized treatment regimes with a valid instrumental variable. Han (2020a) provided an alternative identifying condition of optimal treatment regimes using the conditional Wald estimand of Cui and Tchetgen Tchetgen (2020); Qiu et al. (2020) when treatment assignment is… 

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