Major depression as a risk factor for chronic disease incidence: longitudinal analyses in a general population cohort

Scott B. Patten, Jeanne V.A. Williams, Dina H. Lavorato, Geeta Modgill, Nathalie Jetté, Michael Eliasziw

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187 Scopus citations

Abstract

Objective: Cross-sectional studies have consistently reported associations between major depression (MD) and chronic medical conditions. Such studies cannot clarify whether medical conditions increase the risk for MD or vice versa. The latter possibility has received relatively little attention in the literature. In this study, we evaluate the incidence of several important chronic medical conditions in people with and without MD. Method: The data source was the Canadian National Population Health Survey (NPHS). The NPHS included the Composite International Diagnostic Interview Short Form to assess past-year major depressive episodes. The NPHS also collected self-report data about professionally diagnosed long-term medical conditions. A longitudinal cohort was interviewed every 2 years between 1994 and 2002. Proportional hazards models were used to compare the incidence of chronic conditions in respondents with and without MD and to produce age-, sex- and covariate-adjusted estimates of the hazard ratios. Results: The adjusted hazard ratios associated with MD at baseline interview were elevated for several long-term medical conditions: heart disease (1.7), arthritis (1.9), asthma (2.1), back pain (1.4), chronic bronchitis or emphysema (2.2), hypertension (1.7) and migraines (1.9). The incidences of cataracts and glaucoma, peptic ulcers and thyroid disease were not higher in respondents with MD. Conclusion: A set of conditions characterized particularly by pain, inflammation and/or autonomic reactivity has a higher incidence in people with MD.

Original languageEnglish
Pages (from-to)407-413
Number of pages7
JournalGeneral Hospital Psychiatry
Volume30
Issue number5
DOIs
StatePublished - Sep 2008
Externally publishedYes

Keywords

  • Arthritis
  • Back pain
  • Bronchitis
  • Cataracts
  • Depressive disorders
  • Emphysema
  • Glaucoma
  • Heart disease
  • Hypertension
  • Longitudinal studies
  • Major depressive episode
  • Migraines
  • Peptic ulcers
  • Thyroid disease

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