Kortelainen, Mika; Luoma, Kalevi; Moisio, Antti - 2014 - Preliminary draft
efficiency of health centres in Finland between 1990 and 2003. To address potential non-random or endogenous treatment assignment … we also utilize propensity score difference-in-difference approach. For cost efficiency estimation we use the non …-parametric order-alpha method that is more suitable for small samples than the traditional efficiency estimators. Our results show that …