title: Panic disorder in later life: results from a national survey of Canadians.
abstract: BACKGROUND
  At present, our understanding of the risk markers associated with panic disorder among older, community dwelling older adults is limited. To address this gap, we examined the prevalence, risk markers, and comorbidity of panic disorder defined using DSM-IV criteria among older adults.
  
  
  METHODS
  Using data drawn from a large, nationally representative sample of Canadians, we estimated lifetime and 12-month prevalence of panic disorder, and examined demographic predictors and patterns of comorbidity of current panic disorder in adults aged 55 years and older (n = 12,792).
  
  
  RESULTS
  The 12-month and lifetime prevalence estimates of panic disorder in this sample were 0.82% and 2.45% respectively, and one-fifth of these cases reported a first onset after the age of 55 years. In multivariate models, the risk of panic disorder decreased with older age and was significantly lower among widowed respondents. Physical limitations in daily activities as well as the presence of other psychiatric disorders (major depression, and social phobia) were also significantly associated with panic disorder in this sample.
  
  
  CONCLUSIONS
  Consistent with previous research on panic disorder, the prevalence of the disorder decreased with age among older adults. Potential explanations for the age effect and the clinical implications of the mental health comorbidities with panic disorder are discussed.
authors: Department of Public Health Sciences, University of Toronto, Canada. laurie.corna@utoronto.ca
authors: Laurie M
authors: LM
authors: Corna
authors: John
authors: J
authors: Cairney
authors: Nathan
authors: N
authors: Herrmann
authors: Scott
authors: S
authors: Veldhuizen
authors: Laura
authors: L
authors: McCabe
authors: David
authors: D
authors: Streiner
mesh_terms: D000203:Activities of Daily Living / Q000523:psychology; D000367:Age Factors; D000368:Aged; D000379:Agoraphobia / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D002170:Canada; D015897:Comorbidity; D003430:Cross-Sectional Studies; D003865:Major Depressive Disorder / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D005260:Female; D006306:Health Surveys; D006801:Humans; D008297:Male; D008875:Middle Aged; D051346:Mobility Limitation; D015999:Multivariate Analysis; D016584:Panic Disorder / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D010698:Phobic Disorders / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology; D012307:Risk Factors; D012737:Sex Factors; D012959:Socioeconomic Factors; D017805:Widowhood / Q000523:psychology / Q000706:statistics & numerical data