This note discusses two recent studies on identification of individualized treatment rules using instrumental variables---Cui and Tchetgen Tchetgen (2020) and Qiu et al. (2020). It also proposes identifying assumptions that are alternative to what is used in both studies.

翻译：本说明讨论了最近关于使用工具变量-Cui和Tchetgen Tchetgen(2020年)和Qiu等人(2020年)确定个人化治疗规则的两项研究,并提出了替代两项研究使用的假设。