Before revision: In this paper we study methods for estimating causal effects in settings with panel data, where a subset of units are exposed to a treatment during a subset of periods , and the goal is estimating counterfactual (untreated) outcomes for the treated unit/period combinations.
After revision: In this paper we study methods for estimating causal effects in settings with panel data, where a subset of units are exposed to a treatment during some periods and the goal is estimating counterfactual (untreated) outcomes for the treated unit/period combinations.