title: Lifetime suicide risk in major depression: sex and age determinants.
abstract: BACKGROUND
  Recent work has demonstrated that the lifetime suicide risk for patients with DSM IV Major Depression cannot mathematically approximate the accepted figure of 15%. Gender and age significantly affect both the prevalence of major depression and suicide risk.
  
  
  METHODS
  Gender and age stratified calculations were made on the entire population of the USA in 1994 using a mathematical algorithm. Sex specific corrections for under-reporting were incorporated into the design.
  
  
  RESULTS
  The lifetime suicide risks for men and women were 7% and 1%, respectively. The combined risk was 3.4%. The male:female ratio for suicide risk in major depression was 10:1 for youths under 25, and 5.6:1 for adults.
  
  
  CONCLUSIONS
  Suicide in major depression is predominantly a male problem, although complacency towards female sufferers is to be avoided. Diagnosis of major depression is of limited help in predicting suicide risk compared to case specific factors. The male experience of depression that leads to suicide is often not identified as a legitimate medical complaint by either sufferers or professionals. Increasing help-accessing by males is a priority.
  
  
  CONCLUSIONS
  Patients with a history of hospitalisation; comorbidity, especially for substance abuse; and who are male, require greater vigilance for suicide risk. It may be that for males the threshold for diagnosing and treating major depression needs to be lowered.
  
  
  CONCLUSIONS
  This research is based on a mathematical algorithm to approximate a life-long longitudinal study that identifies community cases of depression. Our findings therefore rely on the validity of the statistics used. Extrapolation is limited to populations with an actual suicide rate of 17/100,000 or less and a lifetime prevalence of major depression of 17% or more.
authors.affiliation: University of Queensland, Australia.
authors.forename: G W
authors.initials: GW
authors.lastname: Blair-West
authors.forename: C H
authors.initials: CH
authors.lastname: Cantor
authors.forename: G W
authors.initials: GW
authors.lastname: Mellsop
authors.forename: M L
authors.initials: ML
authors.lastname: Eyeson-Annan
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000465:Algorithms; D015897:Comorbidity; D003866:Depressive Disorder / Q000150:complications / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018570:Risk Assessment; D012737:Sex Factors; D013405:Suicide / Q000523:psychology*