The estimators implemented by drlate are described in the paper by Słoczyński, Uysal, and Wooldridge, "Doubly Robust Estimation of Local Average Treatment Effects Using Inverse Probability Weighted Regression Adjustment," available here: arxiv.org/abs/2208.01300.
We revisit the problem of estimating the local average treatment effect (LATE) and the local average treatment effect on the treated (LATT) when control variables are available, either to render the i...