• Meng-Che Tsai, Kuen-Jer Tsai, Hao-Kuang Wang, Pi-Shan Sung, Ming-Hsiu Wu, Kuo-Wei Hung, and Sheng-Hsiang Lin.
• Institute of Clinical Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
• J. Pediatr. 2014 Jan 1;164(1):136-141.e1.

ObjectiveTo delineate the relationship between traumatic brain injury (TBI) and mood disorders from population-based data in Taiwan.Study DesignThis prospectively followed cohort study involved a subset of the National Health Insurance Research Database containing complete inpatient and outpatient data of 1 million randomly drawn beneficiaries. We included 10- to 24-year-old patients (n = 15,203) receiving the diagnosis of TBI in ambulatory visits or hospitalization from 2000-2004 and their age- and sex-matched comparison insureds using health service in the same year (n = 76,015). Diagnosis of mood disorders was recorded within 5 years after the traumatic event or index use of health service. Baseline demographics, clinical characteristics, and premorbid psychiatric conditions were compared using χ(2) analysis. Increased risk during the 5-year follow-up period was represented by crude and adjusted hazard ratios with 95% CI using a Cox proportional hazard regression.ResultsA total of 451/15,203 patients with TBI (2.97%) received a diagnosis of mood disorders in the 5-year follow-up period compared with 1153/97,445 individuals (1.52%) without antecedent TBI. After adjusting for select premorbid comorbidities, TBI remained a significant predisposing factor with a 1.96-fold (95% CI 1.74-2.22) increase in risk of mood disorders.ConclusionsOur findings show a higher likelihood of manifesting mood disorders in adolescents and young adults who sustained a prior TBI. Health professionals should carefully monitor both the physical and psychological impacts of head trauma.Copyright © 2014 Mosby, Inc. All rights reserved.

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