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Patients Residing in Areas of Increased Social Vulnerability Are at an Increased Risk for Prolonged Length of Stay
Ian Schuster1, Parimal Rana, Jane Brennan
1From Luminis Health Anne Arundel Medical Center Orthopedics, Annapolis, MD.
Introduction:
Patients undergoing hip fracture surgery face notable risks of postoperative morbidity and mortality, and racial and socioeconomic disparities in outcomes exist. This study examined the effect of social vulnerability on outcomes after hip fracture surgery using the CDC's Social Vulnerability Index (SVI).
Methods:
A retrospective study of 464 patients undergoing hip fracture surgery at a single institution from July 2020 to June 2023 was conducted. Demographics, comorbidities, time to surgery, length of stay (LOS), and postoperative outcomes were compared between patients with low versus high social vulnerability. SVI was calculated based on patient's zip code of residence. The 50 th percentile of national SVI scores was used to divide patients into low and high vulnerability groups. Univariate and multivariable analyses were done to compare patient characteristics and outcomes between the groups. The primary outcome of interest was 1-year postoperative mortality.
Results:
No notable differences were observed in demographics, comorbidities, or procedure performed between the groups. Patients with increased social vulnerability had a higher rate of mortality within 1 year (low vulnerability: 12.2 vs. high vulnerability: 24.0%, P = 0.005) and a shorter time to mortality (340.7 vs. 138.9 days, P < 0.001). Patients with higher social vulnerability had longer LOS (β = 1.12, 95% CI: 0.35-1.88, P = 0.004), were 2.37 times more likely to experience mortality within 1 year (OR = 2.37, 95% CI: 1.30-4.27, P = 0.004), and 1.75 times more likely to experience mortality at any time (OR = 1.75, 95% CI: 1.01-2.99, P = 0.045).
Conclusion:
Patients residing in areas of increased social vulnerability were more likely to experience a longer LOS, and more likely to die within 1 year, or at any time after undergoing hip fracture surgery, when compared with those living less socially vulnerable regions. These findings highlight the need for interventions aimed at addressing social factors within hip fracture care pathways to mitigate socioeconomic disparities in patient outcomes.
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