PRE-OPERATIVE BMI AS A PREDICTOR OF PATIENT REPORTED OUTCOMES OF PRIMARY HIP REPLACEMENT SURGERY: A COMBINED ANALYSIS OF 4 PROSPECTIVE COHORT STUDIES - Batra, R; Judge, A; Javaid, M; Thomas, G; Beard, D; Murray, D; Dieppe, P; Drienhoefer, K; Peter-Geunther, K; Field, R; Cooper, C; Arden, N (2012)