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Fam Pract. 2013 Oct;30(5):514-9. doi: 10.1093/fampra/cmt039. Epub 2013 Aug 2.

Mortality in depressed and non-depressed primary care Swedish patients: a 12-year follow-up cohort study.

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  • 1Department of Neurobiology, Centre for Family Medicine, Karolinska Institutet, Huddinge.

Abstract

BACKGROUND:

Data regarding mortality among depressed patients in Swedish primary care is limited.

OBJECTIVES:

We compared mortality in a cohort of depressed and non-depressed patients at long-term follow-up and compared these values with standardized mortality rates (SMRs) in the Swedish population. Hazards ratios (HRs) for the relationship between death and depression, psychosocial factors and lifestyle were analysed, and we explored the proportion of unnatural causes of deaths.

METHODS:

Mortality was studied in a cohort of 124 depressed and 280 non-depressed patients 12 years after being diagnosed with depression in primary care. Mortality and the mortality rates and SMRs in depressed and non-depressed patients were compared by gender. Cox regression was applied to calculate HRs for the risk of dying for explanatory variables, including depression, psychosocial factors and lifestyle.

RESULTS:

A larger number of depressed patients, 11% (n = 14), compared with non-depressed patients, 4% (n = 12), died (P = 0.008), with significantly higher values among depressed men (P = 0.014). SMRs did not differ from those of the Swedish population. Depression was the only variable associated with a significantly elevated risk of death (HR, 3.34; 95% CI, 1.38-8.08). Nearly one-third of deaths had unnatural causes when alcohol-related deaths were included.

CONCLUSION:

This study underlines the importance of careful follow-up of all depressed patients' mental and physical health and the intervention on unhealthy lifestyles. Large primary care database studies are needed to explore the association between depression, co-morbid somatic diseases, lifestyle and mortality.

KEYWORDS:

Depression; follow-up studies; mortality determinants; primary care; suicide.

PMID:
23913789
DOI:
10.1093/fampra/cmt039
[PubMed - indexed for MEDLINE]
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