title: Lifetime risk and age of onset distributions of psychiatric disorders: analysis of national sample survey in South Korea.
abstract: BACKGROUND
  The present study represents the first attempt at examining variation across Korean cohorts with respect to lifetime risk of DSM-IV psychiatric disorders.
  
  
  OBJECTIVE
  To present data on lifetime prevalence and projected lifetime risk, as well as age of onset (AOO) and demographic correlates of DSM-IV psychiatric disorders as assessed in the nationwide survey of a representative sample of Korean adults.
  
  
  METHODS
  The survey was based on a multistage area probability sample of non-institutionalized Koreans aged 18-64 years. The Korean version of the Composite International Diagnostic Interview 2.1 (K-CIDI 2.1) was administered by lay interviewers.
  
  
  RESULTS
  Lifetime prevalence of any disorder was 24.6%. Alcohol abuse (9.2%), alcohol dependence (7.0%), major depressive disorder (5.6%), specific phobia (3.8%), and GAD (1.6%) were the most common disorders. The median AOO was earliest for anxiety disorders (age 29), latest for mood disorders (age 47), and intermediate for alcohol use disorders (age 31). Compared to observed lifetime prevalence (24.6%), 35.0% of Koreans will eventually experience one of these disorders. Further, half of the population who present with a psychiatric disorder do so by the age of 32 and younger cohorts are at greater risk for most disorders.
  
  
  CONCLUSIONS
  About one-third of the Korean adult population will meet the criteria for a DSM-IV psychiatric disorder at some time during their life. The median age of onset varies from disorder to disorder and younger cohorts appear to be at greater risk for most disorders.
authors.affiliation: Department of Psychiatry, Seoul National University College of Medicine and Hospital, Seoul, South Korea.
authors.forename: Maeng Je
authors.initials: MJ
authors.lastname: Cho
authors.forename: Sung Man
authors.initials: SM
authors.lastname: Chang
authors.forename: Bong-Jin
authors.initials: BJ
authors.lastname: Hahm
authors.forename: In-Won
authors.initials: IW
authors.lastname: Chung
authors.forename: Ahn
authors.initials: A
authors.lastname: Bae
authors.forename: Young Moon
authors.initials: YM
authors.lastname: Lee
authors.forename: Joon Ho
authors.initials: JH
authors.lastname: Ahn
authors.forename: Seunghee
authors.initials: S
authors.lastname: Won
authors.forename: Jungwoo
authors.initials: J
authors.lastname: Son
authors.forename: Jin Pyo
authors.initials: JP
authors.lastname: Hong
authors.forename: Jae Nam
authors.initials: JN
authors.lastname: Bae
authors.forename: Dong-Woo
authors.initials: DW
authors.lastname: Lee
authors.forename: Seong-Jin
authors.initials: SJ
authors.lastname: Cho
authors.forename: Jong-Ik
authors.initials: JI
authors.lastname: Park
authors.forename: Jun-Young
authors.initials: JY
authors.lastname: Lee
authors.forename: Jin Yeong
authors.initials: JY
authors.lastname: Kim
authors.forename: Hong Jin
authors.initials: HJ
authors.lastname: Jeon
authors.forename: Hae Woo
authors.initials: HW
authors.lastname: Lee
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D017668:Age of Onset; D019973:Alcohol-Related Disorders / Q000150:complications / Q000453:epidemiology; D015331:Cohort Studies; D015897:Comorbidity; D003865:Major Depressive Disorder / Q000150:complications / Q000453:epidemiology; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D006306:Health Surveys; D006801:Humans; D007406:Interview, Psychological; D008297:Male; D001523:Mental Disorders / Q000150:complications / Q000175:diagnosis / Q000453:epidemiology*; D008875:Middle Aged; D010698:Phobic Disorders / Q000150:complications / Q000453:epidemiology; D011159:Population Surveillance; D015995:Prevalence; D011569:Psychiatric Status Rating Scales; D056910:Republic of Korea / Q000453:epidemiology; D012307:Risk Factors; D017678:Sex Distribution