title: Recurrent suicidal ideation in young adults.
abstract: OBJECTIVE
  Recurrent suicidal ideation (SI) may be linked to an increased risk of making suicide plans and suicide attempts. The objectives were to describe the frequency of SI recurrence in a population-based sample of young adults, and to compare mental health diagnoses, substance use, use of health services and medication use among those with and without recurrent SI.
  
  
  METHODS
  Data were collected from 785 participants at age 20 years and again at age 24. Chi-square tests were used to compare participants with and without recurrent SI.
  
  
  RESULTS
  Of 56 participants who reported SI at age 20, 32% reported SI four years later. Thirty-nine percent of participants with recurrent SI reported poor mental health compared to 8% of participants who never reported SI; 11% (vs. 4%) had sought professional help, 44% (vs. 8%) had been diagnosed with a mood and/or anxiety disorder, and 22% (vs. 2%) had taken medication for a mental health problem. Past-year substance use was higher among those with recurrent SI than among those with no SI: 67% vs. 42% smoked cigarettes, 56% vs. 39% used other tobacco products, 89% vs. 74% binge drank, 56% vs. 42% used marijuana and 33% vs. 17% reported using illicit drugs.
  
  
  CONCLUSIONS
  One third of young adults with a history of SI reported SI four years later. Because SI can recur, clinicians should monitor young adults with a history of SI, assess their substance use and mood/anxiety disorders and if needed, refer them for psychological or psychiatric care.
authors.forename: Erika N
authors.initials: EN
authors.lastname: Dugas
authors.forename: Nancy C
authors.initials: NC
authors.lastname: Low
authors.forename: Erin K
authors.initials: EK
authors.lastname: O'Loughlin
authors.affiliation: University of Montreal, CRCHUM, INSPQ. jennifer.oloughlin@umontreal.ca.
authors.forename: Jennifer L
authors.initials: JL
authors.lastname: O'Loughlin
mesh_terms: D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis / Q000188:drug therapy; D008605:Mental Health Services / Q000706:statistics & numerical data; D012008:Recurrence; D012307:Risk Factors; D019966:Substance-Related Disorders / Q000523:psychology; D059020:Suicidal Ideation; D055815:Young Adult
keywords: Longitudinal studies; suicidal ideation; young adult