Frölich, Markus; Melly, Blaise - Institute for the Study of Labor (IZA) - 2008
This paper develops IV estimators for unconditional quantile treatment effects (QTE) when the treatment selection is … attainment of the semiparametric efficiency bound are shown for our weighting estimator, which is extremely simple to implement … variable is itself confounded but also for efficiency when the instrument is valid unconditionally. Monte Carlo simulations and …