Long-Term Effect of Social Relationships on Mortality in Patients with Congestive Heart Failure

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Abstract
Congestive heart failure is a major cause of morbidity and mortality within the Western world, and yet psychosocial impact of this disease is under-researched. The aim of this study was to evaluate the possible effects of social relationships (perceived social support and perceived social isolation) on mortality risk in 119 patients with stable, symptomatic congestive heart failure. Fifty-one deaths were registered during the six-year follow-up period, all from cardiac causes. Analysis using proportional hazard models indicated that social isolation was a significant predictor of mortality (relative risk, 1.36; confidence interval, 1.04 to 1.78; p < 0.03), controlling for neuroticism, heart failure severity, functional status, gender, and age. The small sample size was a limitation of the study; therefore, further research is required in order to confirm these findings and to illuminate the mechanisms behind the relationships between social isolation and mortality.