title: Screening for atypical suicide risk with person fit statistics among people presenting to alcohol and other drug treatment.
abstract: Symptoms of internalizing disorders (depression, anxiety, somatic, trauma) are the major risk factors for suicide. Atypical suicide risk is characterized by people with few or no symptoms of internalizing disorders.
  
  
  OBJECTIVE
  In persons screened at intake to alcohol or other drug (AOD) treatment, this research examined whether person fit statistics would support an atypical subtype at high risk for suicide that did not present with typical depression and other internalizing disorders.
  
  
  METHODS
  Symptom profiles of the prototypical, typical, and atypical persons, as defined using fit statistics, were tested on 7408 persons entering AOD treatment using the Global Appraisal of Individual Needs (GAIN; Dennis et al., 2003a,b).
  
  
  RESULTS
  Of those with suicide symptoms, the findings were as expected with the atypical group being higher on suicide and lower on symptoms of internalizing disorders. In addition, the atypical group was similar or lower on substance problems, symptoms of externalizing disorders, and crime and violence.
  
  
  CONCLUSIONS
  Person fit statistics were useful in identifying persons with atypical suicide profiles and in enlightening aspects of existing theory concerning atypical suicidal ideation.
authors.affiliation: University of Illinois at Chicago, School of Public Health, 1603 West Taylor Street, Chicago, IL 60612-4310, USA. kjconrad@uic.edu
authors.forename: Kendon J
authors.initials: KJ
authors.lastname: Conrad
authors.forename: Nikolaus
authors.initials: N
authors.lastname: Bezruczko
authors.forename: Ya-Fen
authors.initials: YF
authors.lastname: Chan
authors.forename: Barth
authors.initials: B
authors.lastname: Riley
authors.forename: Guy
authors.initials: G
authors.lastname: Diamond
authors.forename: Michael L
authors.initials: ML
authors.lastname: Dennis
mesh_terms: D000293:Adolescent; D000328:Adult; D000437:Alcoholism / Q000523:psychology*; D001007:Anxiety / Q000453:epidemiology; D003415:Crime / Q000706:statistics & numerical data; D003863:Depression / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening / Q000706:statistics & numerical data*; D010552:Personality Assessment / Q000706:statistics & numerical data*; D044469:Racial Groups; D012307:Risk Factors; D012720:Severity of Illness Index; D019966:Substance-Related Disorders / Q000523:psychology*; D013405:Suicide / Q000706:statistics & numerical data; D014754:Violence / Q000706:statistics & numerical data; D000092864:Suicide Prevention