| Review of Economics and Statistics
The Variance of Non-Parametric Treatment Effect Estimators in the Presence of Clustering
Non-parametric estimators of treatment effects are often applied in settings where clustering may be important. We provide a general methodology for consistently estimating the variance of a large class of non-parametric estimators, including the simple matching estimator, in the presence of clustering. Software for implementing our variance estimator is available in Stata.
Keywords: treatment effects;