title: Early trauma and lifetime suicidal behavior in a nationwide sample of Korean medical students.
abstract: BACKGROUND
  No previous study has investigated the association between early trauma and suicidal behavior in medical students. We evaluated the types of early trauma which are the most strongly associated with a lifetime history of suicidal behavior in medical students.
  
  
  METHODS
  A total of 6986 medical students completed a self-administered questionnaire (response rates: 49.6% of the entire medical student body in Korea) which included lifetime suicidal behavior, stressors, and the Early Trauma Inventory Self Report-Short Form (ETISR-SF). This was used to evaluate the most serious forms of trauma experienced before the age of 18, including general trauma, physical, emotional and sexual abuse.
  
  
  RESULTS
  Among medical students, lifetime prevalence of suicidal behavior was 34.0% for those who experienced early trauma and 18.1% in those without a history of trauma (chi(2)=215.7, p<0.0001). Emotional abuse exhibited a higher odds ratio for lifetime suicidal behavior (OR=3.6, 95%CI=2.9-4.4) than other traumas including general trauma (OR=2.1, 95%CI=1.8-2.4), sexual (OR=2.0, 95%CI=1.5-2.8) or physical (OR=1.8, 95%CI=1.5-2.1) abuse, and current stressors including heavy stress (OR=1.5, 95%CI=1.4-1.8), poor physical health (OR=1.3, 95%CI=1.2-1.5), and poor economic status (OR=1.2, 95%CI=1.0-1.3). Emotional abuse also showed a higher odds ratio for lifetime suicidal ideation (OR=3.5, 95%CI=2.8-4.4), plan (OR=3.9, 95%CI=2.4-6.2), and attempt (OR=4.1, 95%CI=2.4-6.8) than other early traumas or stressors. In emotional abuse, a continuously cold or uncaring parental attitude exhibited a stronger association with lifetime suicidal behavior (OR=4.5, 95%CI=2.7-7.7) than other emotional abuse.
  
  
  CONCLUSIONS
  Emotional abuse, especially continuous parental emotional abuse in childhood, is significantly associated with lifetime suicidal behavior in Korean medical students.
authors.affiliation: Department of Psychiatry, Depression Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 135-710, South Korea.
authors.forename: Hong Jin
authors.initials: HJ
authors.lastname: Jeon
authors.forename: Myoung-Sun
authors.initials: MS
authors.lastname: Roh
authors.forename: Kyu-Han
authors.initials: KH
authors.lastname: Kim
authors.forename: Jeong-Ryul
authors.initials: JR
authors.lastname: Lee
authors.forename: Dongsoo
authors.initials: D
authors.lastname: Lee
authors.forename: Se Chang
authors.initials: SC
authors.lastname: Yoon
authors.forename: Bong-Jin
authors.initials: BJ
authors.lastname: Hahm