Rothman KJ, Huisman M, Lip G, Diener H, Dubner S, Ma C, Zint C, Teutsch C, Shoof N, Paquette M, Kleine E, Bartels D, Halperin J, the GLORIA AT study team . Use of propensity scores to assess comparability of treatment groups in a registry program. Presented at the 30th International Conference on Pharmacoepidemiology and Therapeutic Risk Management; October 25, 2014. Taipei, Taiwan.