Hahn, Jinyong - In: SERIEs : Journal of the Spanish Economic Association 14 (2023) 3/4, pp. 301-313
Treatment effects are often estimated by the least squares estimator controlling for some covariates. This paper … investigates its properties. When the propensity score is constant, it is a consistent estimator of the average treatment effects … if it is viewed as a semiparametric partially linear regression estimator, but it is not necessarily more efficient than …