Comorbidity and functional correlates of anxiety and physical conditions in Canadian Veterans

Little is known about the relationship between anxiety disorders and physical conditions in Canadian Veterans. The purpose of this investigation was to examine the comorbidity of anxiety and physical conditions and their relation to physical and mental health–related quality of life and activity limitations in a nationally representative sample of Canadian Veterans. Methods: Participants were selected from the cross-sectional 2010 Survey on Transition to Civilian Life ( N = 3,154, response rate = 71.0%). The sample consisted of former Canadian Armed Forces Regular Force personnel who were released from 1998 to 2007. Multivariate logistic and linear regression models evaluated associations between several commonly occurring chronic physical conditions and any anxiety disorder and correlates (i.e., quality of life and activity limitations) of comorbidity. Results: Any anxiety disorder was associated with significantly elevated rates of cardiovascular, gastrointestinal, respiratory, and musculoskeletal conditions; diabetes; and chronic pain after controlling for sociodemographics, military characteristics, any mood disorder, and heavy drinking. However, when additionally controlling for number of physical conditions, any anxiety disorder remained significantly associated with gastrointestinal conditions (adjusted odds ratio [AOR] = 1.63, 99% confidence interval [CI] = 1.07–2.50) and chronic pain (AOR = 1.79, 99% CI = 1.15–2.78). Co-occurring anxiety disorders and musculoskeletal conditions were associated with poorer physical health–related quality of life and activity limitations than musculoskeletal conditions alone. Conclusion: Anxiety disorders and physical health problems co-occur at high rates among Canadian Veterans, and this comorbidity is linked to poorer physical health–related quality of life and activity limitations. These findings have implications for supporting at-risk personnel with the transition to civilian life and for informing health promotion and prevention efforts.