Increased risk of stroke in the year after a hip fracture: A population-based follow-up study

Background and Purpose- Stroke is a documented risk factor for hip fracture. However, no documented studies are available on the risk of stroke among patients with hip fracture. This study investigated the frequency and risk of stroke after hip fracture using a nationwide population-based study. Methods- The study cohort included 2101 patients hospitalized with a principal diagnosis of hip fracture from 2001 to 2004. The comparison cohort consisted of 6303 randomly selected subjects matched on sex, age, and year of index healthcare use as controls. We tracked patients for a 1-year period from their index healthcare encounter to identify those who had a stroke. Stratified Cox proportional hazard regression was performed to evaluate the association of hip fracture with subsequent stroke during 1-year follow-up. Results- Of a total of 8404 patients, 86 (4.1%) from the study group and 170 (2.7%) from the comparison group had strokes during the follow-up period (P