The Role of Prefracture Health Status in Physical and Mental Function After Hip Fracture Surgery

To examine the associations of 3 measures of prefracture health status (physical function, mental function, and comorbidity count) with trajectories of physical and mental function at 1.5, 3, 6, and 12 months after hip fracture surgery. Single-center observational study. Singapore General Hospital (an acute hospital). Patients aged ≥60 years who underwent first hip fracture surgery between June 2011 and July 2016 (N = 928). None. We used data collected prospectively from the hospital's hip fracture registry. We used the Short Form–36 (SF-36) Physical Component Summary (PCS) and Mental Component Summary (MCS) as indicators of physical and mental function, respectively, collected at admission and at 1.5, 3, 6, and 12 months after hip fracture surgery. Comorbidity count at admission was the sum from a list of 10 common diseases associated with poorer physical function. Prefracture physical function and prefracture mental function demonstrated time-varying associations (interaction P