Millimet, Daniel L.; Tchernis, Rusty - Institute for the Study of Labor (IZA) - 2008
of X as the conditioning variable.
2.2 Bias When Unconfoundedness Fails
Given knowledge of the propensity score, or an … operationalize this knowledge, we have proposed a new, two-stage estimation technique of the
ATE. In the first-stage, one estimates …