Diabetes, depression, and quality of life - A population study

Abstract

Objective: The aim of the study was to assess the prevalence of diabetes and depression and their associations with quality of life using a representative population sample. Research design and methods: the study consisted of a representative population sample of individuals aged {greater than or equal to} 15 years living in South Australia comprising 3,010 personal interviews conducted by trained health interviewers. The prevalence of depression I those suffering doctor-diagnosed diabetes and comparative effects of diabetic status and depression on quality-of-life dimensions were measured. Results: the prevalence of depression in the diabetic population was 24% compared with 17% in the nondiabetic population. Those with diabetes and depression experienced an impact with a large effect size on every dimension of the Short Form Health-Related Quality-of-Life Questionnaire (SF-36) as compared with those who suffered diabetes and who were not depressed. A supplementary analysis comparing both depressed diabetic and depressed nondiabetic groups showed there were statistically significant differences in the quality-of-life effects between the two depressed populations in the physical and mental component summaries of the SF-36. Conclusion: depression for those with diabetes is an important comorbity that requires careful management because of its severe impact on quality of life.