title: [Classification of persons attempting suicide. A review of cluster analysis research].
abstract: OBJECTIVE
  Review of conclusions from cluster analysis research on suicide risk factors published after the year 1993.
  
  
  METHODS
  Search and analysis of cluster analysis research papers on suicidal behaviour.
  
  
  RESULTS
  Following groups where distinguished: (1) persons with comorbid mental disorders or with severe symptoms, (2) persons without mental disorders or with mild symptoms, (3) persons with personality disorders and externalizing psychopathology, (4) socially withdrawn persons with a tendency to avoid social contacts, (5) depressive persons
  
  
  CONCLUSIONS
  Analysis of studies on characteristics of suicide attempters, with the application of cluster analysis, has indicated the possibility of differentiation of several groups of persons with significantly increased risk of suicide attempt. The reviewed cluster analysis research had multiple methodological limitations. Studies employing cluster analysis on large, representative and homogeneous population are needed.
authors.forename: Tymoteusz
authors.initials: T
authors.lastname: Wolodzko
authors.forename: Andrzej
authors.initials: A
authors.lastname: Kokoszka
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D016000:Cluster Analysis; D015897:Comorbidity; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010551:Personality; D010554:Personality Disorders / Q000145:classification / Q000453:epidemiology*; D018570:Risk Assessment; D012307:Risk Factors; D012720:Severity of Illness Index; D019966:Substance-Related Disorders / Q000453:epidemiology; D013406:Suicide, Attempted / Q000145:classification* / Q000706:statistics & numerical data*; D055815:Young Adult