title: The validity of proxy-based data in suicide research: a study of patients 50 years of age and older who attempted suicide. II. Life events, social support and suicidal behavior.
abstract: OBJECTIVE
  To investigate the validity of proxy respondent reports of stressful life events, social support and suicidal behavior among individuals who attempted suicide.
  
  
  METHODS
  Subjects were 80 psychiatric in-patients admitted following a suicide attempt. Data based on structured interviews with proxy respondents were compared with data based on interviews with subjects (gold standard).
  
  
  RESULTS
  Specificity was higher than sensitivity across life event categories, and agreement was substantial for public and observable events (e.g. parent's death) but lower for more ambiguous events. Proxies were good judges of subject reports of frequency of social interaction but not perceived emotional support. Proxies were good judges of past history of suicide attempts and level of suicidal intent.
  
  
  CONCLUSIONS
  Results support proxy-based data on suicidal behavior and certain aspects of social support and stressful life events in research of suicidal behavior in this age group, with potential implications for interpreting postmortem research of completed suicide.
authors.affiliation: Center for the Study and Prevention of Suicide, University of Rochester Medical Center, 3300 Crittenden Boulevard, Rochester, NY 14642, USA.
authors.forename: K R
authors.initials: KR
authors.lastname: Conner
authors.forename: Y
authors.initials: Y
authors.lastname: Conwell
authors.forename: P R
authors.initials: PR
authors.lastname: Duberstein
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003625:Data Collection; D005195:Family Relations; D005260:Female; D006801:Humans; D007406:Interview, Psychological; D008016:Life Change Events; D008297:Male; D008875:Middle Aged; D019727:Proxy; D012106:Research; D012944:Social Support; D013406:Suicide, Attempted / Q000523:psychology*