• J Trauma · Sep 2009

    Suicides, homicides, and unintentional injury deaths after trauma center discharge: cocaine use as a risk factor.

    • Gabriel E Ryb, Carnell C Cooper, Patricia C Dischinger, Joseph A Kufera, Kimberly M Auman, and Carl A Soderstrom.
    • National Study Center for Trauma and Emergency Medical Systems, 110 South Paca Street, 4th Floor, Baltimore, MD 21201, USA. gabyryb@pol.net
    • J Trauma. 2009 Sep 1; 67 (3): 490-6; discussion 497.

    Background: To study whether trauma center patients with positive toxicology findings for cocaine-positive (COC+) are at a higher risk for suicide, homicide, and unintentional injury death after discharge than cocaine-negative (COC+) trauma patients.Methods: Patients admitted between July 1983 and June 1995 and discharged alive from a level I trauma center were prospectively followed up for 1.5 years to 14.5 years. The occurrence of suicide, homicide, and unintentional injury death was explored in relation to COC+ status at admission using Cox proportional hazards methodology. Models included possible confounders. Interactions with each of the main effects were explored.Results: Of the 27,399 admissions, 21,500 had urine COC toxicology testing performed and were included in the study. COC was positive in 11.4% of the studied population. COC+ patients were significantly younger, with 72% of COC+ versus 43% of COC- in the 25 to 44 years age group. COC+ patients were more likely to be men, positive for alcohol, and intentional injury victims. COC+ status was not associated with subsequent suicide. Furthermore, the COC+ status association with subsequent homicide became nonsignificant after adjusting for confounders. Unadjusted COC+ status was associated with unintentional injury death (odds ratio = 1.65 [1.14-2.40]). Interactions were found in the association with unintentional injury death such that COC+ status tripled the odds of injury death (odds ratio = 2.75 [1.58-4.78]) among the alcohol-negative patients within the 25 to 45 years age group.Conclusion: COC+ trauma patients are at an increased risk of subsequent unintentional injury death after discharge from a trauma center. Suicide and homicide occurrence seems to be unaffected.

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