Media type: E-Article Title: Regression discontinuity designs : an approach to the evaluation of treatment efficacy in primary care using observational data Contributor: O’Keeffe, Aidan G; Geneletti, Sara; Baio, Gianluca; Sharples, Linda D; Nazareth, Irwin; Petersen, Irene Published: British Medical Journal Publishing Group, 2014 Published in: BMJ: British Medical Journal, 349 (2014), Seite - Language: English ISSN: 0959-8138; 1756-1833 Keywords: RESEARCH METHODS & REPORTING Origination: Footnote: