论文标题
一种有效的治疗方法，用于与一般治疗模式的差异差异
An Effective Treatment Approach to Difference-in-Differences with General Treatment Patterns
论文作者
论文摘要
我们考虑了一个普遍的差异差异模型，其中感兴趣的治疗变量可能是非二进制的，并且其价值可能在每个时期发生变化。考虑到整个采用治疗方法，通常很难估计用潜在结果定义的治疗参数，因为仅通过少数观察结果就可以经历每种治疗路径。我们使用有效治疗的概念提出了一种替代方法，该方法将治疗路径汇总到经验上可探讨的低维变量中，并发展出双重鲁棒的识别，估计和推理方法。我们还提供了一个伴随的R软件包。
We consider a general difference-in-differences model in which the treatment variable of interest may be non-binary and its value may change in each period. It is generally difficult to estimate treatment parameters defined with the potential outcome given the entire path of treatment adoption, because each treatment path may be experienced by only a small number of observations. We propose an alternative approach using the concept of effective treatment, which summarizes the treatment path into an empirically tractable low-dimensional variable, and develop doubly robust identification, estimation, and inference methods. We also provide a companion R software package.
