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J Anxiety Disord. 2018 May;56:74-80. doi: 10.1016/j.janxdis.2018.04.005. Epub 2018 Apr 17.

A population-based examination of the co-occurrence and functional correlates of chronic pain and generalized anxiety disorder.

Author information

1
Department of Anesthesia & Perioperative Medicine, Max Rady College of Medicine, University of Manitoba, 2nd Floor Harry Medovy House, 671 William Avenue, Winnipeg, MB, R3E 0Z2, Canada.
2
Department of Anesthesia & Perioperative Medicine, Max Rady College of Medicine, University of Manitoba, 2nd Floor Harry Medovy House, 671 William Avenue, Winnipeg, MB, R3E 0Z2, Canada; Department of Psychology, Faculty of Arts, University of Manitoba, P404 Duff Roblin Building, 190 Dysart Road, Winnipeg, MB, R3T 2N2 Canada.
3
Department of Anesthesia & Perioperative Medicine, Max Rady College of Medicine, University of Manitoba, 2nd Floor Harry Medovy House, 671 William Avenue, Winnipeg, MB, R3E 0Z2, Canada; Department of Psychology, Faculty of Arts, University of Manitoba, P404 Duff Roblin Building, 190 Dysart Road, Winnipeg, MB, R3T 2N2 Canada; Department of Psychiatry, Max Rady College of Medicine, University of Manitoba, PZ433-771 Bannatyne Avenue, Winnipeg, MB, R3T 2N2, Canada; Department of Clinical Health Psychology, Max Rady College of Medicine, University of Manitoba, PZ350-771 Bannatyne Avenue, Winnipeg, MB, R3E 3N4, Canada. Electronic address: renee.el-gabalawy@umanitoba.ca.

Abstract

OBJECTIVES:

This study aimed to: 1) Establish the prevalence of co-occurring chronic pain conditions (i.e., arthritis, back pain, and migraines) and generalized anxiety disorder (GAD), and 2) Examine levels of pain severity, disability, and work absenteeism among comorbid chronic pain conditions and GAD.

METHODS:

Data were analyzed from the 2012 Canadian Community Health Survey-Mental Health (CCHS-MH; N = 25,113). Chi-square analyses assessed whether significant differences existed in pain severity in those with comorbid chronic pain and GAD versus pain conditions alone. Multivariable regressions examined the association between comorbid chronic pain and GAD with functional outcomes.

RESULTS:

The weighted prevalence of GAD among those with chronic migraines, arthritis and back pain was 6.9%, 4.4%, and 6.1% respectively, compared to 2.6% among the entire sample. Severity of pain was increased among those with comorbid chronic pain and GAD compared with chronic pain conditions alone. Migraine was the only pain condition that was significantly associated with disability in our most stringent adjustment model. After controlling for other psychiatric disorders, comorbid GAD and chronic pain was not associated with work absenteeism.

CONCLUSION:

Chronic pain is common among the Canadian population and is associated with substantial disability. Results demonstrated that GAD is prevalent among chronic pain conditions, and comorbidity is associated with greater pain severity. GAD in the context of migraines, in particular, may represent an important treatment target to reduce disability.

KEYWORDS:

Chronic pain; Comorbidity; Disability; Generalized anxiety disorder

PMID:
29703452
DOI:
10.1016/j.janxdis.2018.04.005
[Indexed for MEDLINE]

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