Original ArticlesPhysical Complaints, Medical Service Use, and Social and Employment Changes Following Mild Traumatic Brain Injury: A 6–Month Longitudinal StudyKraus, Jess MPH, PhD; Schaffer, Kathryn MPH; Ayers, Kathi RN, TNC; Stenehjem, Jerome MD; Shen, Haikang PhD; Afifi, A. A. PhDAuthor Information Departments of Epidemiology (Drs Kraus, Schaffer, and Shen) and Biostatistics (Dr Afifi), Southern California Injury Prevention Research Center, University of California, Los Angeles; Sharp Memorial Hospital, Trauma Services, San Diego, Calif (Ms Ayers); and Sharp Memorial Hospital, Rehabilitation Center, San Diego, Calif (Dr Stenehjem). Corresponding author: Jess Kraus, MPH, PhD, Southern California Injury Prevention Research Center, University of California, Los Angeles, 10911 Weyburn Ave, Suite 200, Los Angeles, CA 90024 (e-mail: email@example.com). This study would have not been possible without the cooperation and support of the staff from the Trauma, Emergency, and Rehabilitation Departments at Sharp Memorial Hospital, San Diego. Carolyn DeBellis, Meredith Kimball, and Amy Sauer provided exceptional case identification, follow-up interviews, and medical record abstraction. Katherine Magat, Adam Zaleski, Trina Acosta, and Karen Freitas contributed to case/comparison enrollment and follow-up interviews. A special thanks goes to Andrea Iriarte, Sharp Hospital Trauma Registrar, who assisted with injury severity coding and scoring and to Jill Sobie, RN, BSN, and June Andrea, RN, DnSC, for implementing this project in the Emergency Department. Thanks goes to Barbara Schrock, PhD, for assistance with survey development and Frank Kennedy, MD, for expediting this research within the Sharp Health Care System. Thanks also goes to Francesca Paolone for library searches and Monica Encinias for preparing this manuscript. A special thanks goes to Jean Langlois, ScD, and Richard Sattin, MD, for their critical reading of this manuscript. This project was supported by grant no. R49/CCR903622-09-12 to the UCLA Center from the Southern California Injury Prevention Research Centers for Disease Control and Prevention. A grant provided by the Brain Injury Foundation supported the early pilot phase of this study. The Issue Editors sincerely thank Wesley Rutland-Brown, the Assistant to the Editor, for his invaluable help with this manuscript. Journal of Head Trauma Rehabilitation: May-June 2005 - Volume 20 - Issue 3 - p 239-256 Buy Abstract Using a prospective, dual-cohort study design in which selected preinjury factors were controlled, we present outcomes of 235 patients in a case cohort and 235 patients in a comparison cohort following emergency-department-diagnosed mild traumatic brain injury (MTBI). Symptoms, medical services use, and social and employment concerns were evaluated 6 months after the injury. After adjusting for preinjury characteristics, headaches, dizziness, vision difficulties, memory or learning problems, and alcohol intolerance were found to occur significantly more often in the MTBI cohort than in the comparison cohort. Problems sleeping, use of prescribed medications, and changes in employment were less likely in the MTBI cohort. Although MTBI is not life threatening, our findings suggest that 6 months after injury persons still have related health problems that require routine medical management. © 2005 Lippincott Williams & Wilkins, Inc.