Association of orthogeriatric services with long-term mortality in patients with hip fracture

Abstract

Purpose: To assess the impact of the comprehensive orthogeriatric care model (OGM) on 2-year survival, length of stay (LOS), discharges to nursing homes, and antiosteoporotic treatment (AOT) in patients with hip fracture. Methods: Retrospective cohort study. Hospitals were classified as OGM if the patient was cared for in a comprehensive orthogeriatric unit. We included data from patients ≥ 65 years old discharged between 2012 and 2013. The main outcome was 12- and 24-month mortality. The variables collected were sex, type of fracture, comorbidities, AOT, LOS, and discharge to nursing homes. Survival analysis was performed with Kaplan–Meier method and comparison with Mantel–Haenszel test. Factors associated with death were determined by logistic regression. Results: First admissions in the 12 (out of 32) hospitals with OGM were 3580 of 9215 (38.8%). Patients in OGM had more comorbidities and discharges to nursing homes, shorter LOS, and less prescription of AOT. Two years after the admission the deceased patients were 3000 (32.6%). The survival was lower in males (p < 0.001), in the older age groups (p < 0.001), and in patients with Charlson > 1 (p < 0.001). Factors associated with increased risk of death at 12 and 24 months (logistic regression) were male gender, age and Charlson > 1, while care in the OGM decreased the risk. OGM benefited more patients > 80 years and those with Charlson < 1. Conclusions: Patients admitted in OGM have shorter stays, more discharges to nursing homes, lower prescription of AOT, and better 12- and 24-month survival adjusted by sex, age, and comorbidities compared to non-OGM care.