Value in health : the journal of the International Society for Pharmacoeconomics and Outcomes Research
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Comparative Study
Too much ado about propensity score models? Comparing methods of propensity score matching.
A large number of possible techniques are available when conducting matching procedures, yet coherent guidelines for selecting the most appropriate application do not yet exist. In this article we evaluate several matching techniques and provide a suggested guideline for selecting the best technique. ⋯ Sensitivity analysis of the matching techniques is especially important because none of the proposed methods in the literature is a priori superior to the others. The suggested joint consideration of propensity score matching and multivariate analysis offers an approach to assessing the robustness of the estimates.