[Evaluating health interventions without experiments].

This paper summarizes recent literature on quantitative techniques for the evaluation of non experimental reforms. We closely look at the application of the methods to health economics and health management. The methods of matching and difference in differences combined with matching have been analysed in greatest detail. We have focused our attention on the estimation of the average treatment for the treated as the relevant parameter to be estimated. Along the paper, we have assumed that gains from the reform are heterogeneous in non observable variables across eligible individuals. The methods are described in a non technical manner to motivate further reading.