Identifiability of the instrumental variable model with the treatment and outcome missing not at random
处理与结果非随机缺失时,工具变量模型的可识别性AI 解读 ↓
本页整理公开书目信息,不生成学术质量评分。AI 解读根据题名及所注明的摘要或原文片段生成,未完成全文核验,可能有误;具体假设、证明与结论请核对原文。摘要保留来源文本,未经模型改写。
DOI 首次登记不等于接收或发表日期。部分更正、评论等条目没有独立摘要;缺少可靠材料时保留待补状态。
本页为预印本版本;arXiv 收录、作者填写的期刊信息以及作者既有发表经历,都不单独证明本篇已接收。作者发表记录按 OpenAlex 身份与完整姓名、本站覆盖期刊 ISSN 及正式卷期核对,只展示已核实例,档案仍可能误合并。
引用量采用 OpenAlex 单条关联记录,不合计多个记录;关联记录可能包含正式发表版本,不等于此版本单独引用。缺失不视为零,引用指标不代表论文质量。
关注作者按书目中的完整姓名匹配,同名和姓名变体需人工辨别。相关论文先按共享细分方向和具体方法排列,再参考通用方法与发表日期。
AI 根据所提供的论文材料归类:摘要直接讨论工具变量下局部平均处理效应在非随机缺失中的识别。
处理与结果非随机缺失时,工具变量模型的可识别性AI 解读 ↓
正在核对关联版本…
正在核对对应版本的资源…
The instrumental variable model of Imbens and Angrist (1994) and Angrist et al. (1996) identifies the local average treatment effect, also known as the complier average causal effect (CACE). In practice, however, the treatment and outcome are often missing, and when they are missing not at random (MNAR), the CACE is generally not identifiable without further assumptions, because the underlying data distribution itself cannot be recovered. We study when the CACE remains identifiable under MNAR. Through an exhaustive search over missingness mechanisms, we characterize all those that identify the CACE without auxiliary information, in two scenarios: (1) missing data in either the treatment or the outcome alone, and (2) missing data in both the treatment and outcome under prospective data collection. Along the way, we unify existing results and establish many new ones, giving a complete picture of identifiability in each case. Our theory suggests that before any practical data analysis under the instrumental variable model, it is important to check whether the CACE is identifiable under the proposed missingness mechanism; moreover, because the true mechanism is typically unknown and untestable, it is more robust to conduct sensitivity analyses across multiple plausible missingness mechanisms.