Do different matching approaches result in equivalent findings?

Robert Krohn, Boris Pöhlmann, Birgit Fullerton, Thomas P. Zahn, Petra Kaufmann-Kolle, Günther Heller, Björn Broge & Erik Bauer
Background: Statutory health care funds in Germany are obliged to offer their insured a general practitioner (GP) centered health care contract to strengthen the GP in his role as a gatekeeper and focusing on better quality in medical care and cost effectiveness. To evaluate such programs properly i[for full text, please go to the a.m. URL]