The majority of the burden of firearm injury in the United States is on men as
compared to women. There is limited evidence regarding sex differences in
short-term hospitalization outcomes after surviving firearm injury. The risk of
cardiovascular and all-cause hospital readmission, length of stay (LOS), and
costs within 180 days after surviving an index firearm injury was compared
between males and females. A claims-based, retrospective, cohort study was
performed using Nationwide Readmission Database (2013–2014) to obtain a cohort
of patients who survived an index hospitalization of firearm injury. The
analysis was performed in August 2017. Cox proportional hazard regression models
were used to estimate hazard ratio (HR) and 95% confidence intervals (95% CIs).
Among 17,594 males and 2,289 females discharged alive after index firearm injury
hospitalization, 14.4% and 13.2% were readmitted within 180 days. Within 180
days, the risk of cardiovascular readmission was 3.3 times greater among males
versus females (HR = 3.34, 95% CI [1.18, 9.44]. Risk of all-cause readmission
among males was greater at 90 days (HR = 1.40, 95% CI [1.04, 1.87]. Patients
surviving a firearm injury have a substantial risk of subsequent
hospitalizations. Cardiovascular readmissions are greater among males than
females during the first 6 months after injury and may be indicative of a
continuing long-term risk of health and patient outcomes that contributes to the
overall burden of firearm injury.