Community-Level Social Vulnerability and Patterns of Adolescent Injury

OBJECTIVE: To describe adolescent injuries by the community-level social vulnerability, focusing on injuries related to interpersonal violence. BACKGROUND: The Center for Disease Control and Prevention’s social vulnerability index (SVI) is a tool used to characterize community-level vulnerability. METHODS: Injured adolescent trauma patients (13–17 years old) cared for at a large Level I trauma center over a 10-year period were identified. Injuries were classified by intent as either intentional or unintentional. Census tract level SVI was calculated by composite score and for 4 subindex scores (socioeconomic, household composition/disability, minority/language, housing type/transportation). Patients were stratified by SVI quartile with the lowest quartile designated as low-, the middle two quartiles as average-, and the highest quartile as high vulnerability. The primary outcome was odds of intentional injury. Demographic and injury characteristics were compared by SVI and intent. Multivariable logistic regression was used to estimate the adjusted odds of intentional injury associated with SVI. RESULTS: A total of 1993 injured adolescent patients (1676 unintentional and 317 intentional) were included. The composite SVI was higher in the intentional injury cohort (mean, SD: 66.7, 27.8 vs. 50.5, 30.2; P < 0.001) as was each subindex SVI. The high SVI cohort comprised 31% of the study population, 49% of intentional injuries, and 51% of deaths. The high SVI cohort had significantly increased unadjusted (odds ratio, 4.5; 95% confidence interval, 3.0–6.6) and adjusted (odds ratio, 1.8; 95% confidence interval, 1.6–2.8) odds of intentional injury. CONCLUSIONS: Adolescents living in the highest SVI areas experience significantly higher odds of intentional injury. SVI and SVI subindex details may provide direction for community-level interventions to decrease the impact of violent injury among adolescents.