Kenneth E Covinsky1, Irena Stijacic Cenzer2, Kristine Yaffe3, Sarah O'Brien2, Dan G Blazer4. 1. Department of Medicine, University of California, San Francisco, CA; Division of Geriatrics, University of California, San Francisco, CA; San Francisco Veterans Affairs Medical Center, San Francisco, CA. Electronic address: ken.covinsky@ucsf.edu. 2. Department of Medicine, University of California, San Francisco, CA; Division of Geriatrics, University of California, San Francisco, CA; San Francisco Veterans Affairs Medical Center, San Francisco, CA. 3. Departments of Psychiatry, Neurology, and Epidemiology, and Biostatistics, University of California, San Francisco, CA; San Francisco Veterans Affairs Medical Center, San Francisco, CA. 4. Department of Psychiatry and Behavioral Sciences, Duke University, Durham, NC.
Abstract
OBJECTIVES: Either dysphoria (sadness) or anhedonia (loss of interest in usually pleasurable activities) is required for a diagnosis of major depression. Although major depression is a known risk factor for disability in older persons, few studies have examined the relationship between the two core symptoms of major depression and disability or mortality. Our objective was to examine the relationship between these two core symptoms and time to disability or death. METHODS: In a longitudinal cohort study, we used the nationally representative Health and Retirement Study to examine this relationship in 11,353 persons older than 62 years (mean: 73 years) followed for up to 13 years. Dysphoria and anhedonia were assessed with the Short Form Composite International Diagnostic Interview. Our outcome measure was time to either death or increased disability, defined as the new need for help in a basic activity of daily living. We adjusted for a validated disability risk index and other confounders. RESULTS: Compared with subjects without either dysphoria or anhedonia, the risk for disability or death was not elevated in elders with dysphoria without anhedonia (adjusted hazard ratio [HR]: 1.11; 95% confidence interval [CI]: 0.91-1.36). The risk was elevated in those with anhedonia without dysphoria (HR: 1.30; 95% CI: 1.06-1.60) and those with both anhedonia and dysphoria (HR: 1.28; 95% CI: 1.13-1.46). CONCLUSION: Our results highlight the need for clinicians to learn whether patients have lost interest in usually pleasurable activities, even if they deny sadness. Published by Elsevier Inc.
OBJECTIVES: Either dysphoria (sadness) or anhedonia (loss of interest in usually pleasurable activities) is required for a diagnosis of major depression. Although major depression is a known risk factor for disability in older persons, few studies have examined the relationship between the two core symptoms of major depression and disability or mortality. Our objective was to examine the relationship between these two core symptoms and time to disability or death. METHODS: In a longitudinal cohort study, we used the nationally representative Health and Retirement Study to examine this relationship in 11,353 persons older than 62 years (mean: 73 years) followed for up to 13 years. Dysphoria and anhedonia were assessed with the Short Form Composite International Diagnostic Interview. Our outcome measure was time to either death or increased disability, defined as the new need for help in a basic activity of daily living. We adjusted for a validated disability risk index and other confounders. RESULTS: Compared with subjects without either dysphoria or anhedonia, the risk for disability or death was not elevated in elders with dysphoria without anhedonia (adjusted hazard ratio [HR]: 1.11; 95% confidence interval [CI]: 0.91-1.36). The risk was elevated in those with anhedonia without dysphoria (HR: 1.30; 95% CI: 1.06-1.60) and those with both anhedonia and dysphoria (HR: 1.28; 95% CI: 1.13-1.46). CONCLUSION: Our results highlight the need for clinicians to learn whether patients have lost interest in usually pleasurable activities, even if they deny sadness. Published by Elsevier Inc.
Entities:
Keywords:
Depression; activities of daily living; anhedonia; health status; quality of life
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