Sleep Complaints and Incident Disability in a Community-Based Cohort Study of Older Persons

Objective Sleep complaints are associated with adverse health consequences. We hypothesized that non-disabled older persons with more sleep complaints have an increased risk of developing disability. Methods Subjects included 908 older clergy participating in the Religious Order Study without clinic...

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Bibliographic Details
Published in:The American journal of geriatric psychiatry 2014-07, Vol.22 (7), p.718-726
Main Authors: Park, Margaret, M.D, Buchman, Aron S., M.D, Lim, Andrew S.P., M.D, Leurgans, Sue E., Ph.D, Bennett, David A., M.D
Format: Article
Language:English
Subjects:
Activities of Daily Living
Aged
Aging
Aging - psychology
Cohort Studies
disability
Disability Evaluation
dyssomnia
Dyssomnias - epidemiology
Female
Humans
Internal Medicine
Longitudinal Studies
Male
Proportional Hazards Models
Self Report
sleep
United States - epidemiology
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Summary:Objective Sleep complaints are associated with adverse health consequences. We hypothesized that non-disabled older persons with more sleep complaints have an increased risk of developing disability. Methods Subjects included 908 older clergy participating in the Religious Order Study without clinical dementia, history of stroke, or Parkinson disease. At baseline, participants rated their difficulty falling asleep, frequency of nocturnal awakenings, sleep efficacy, and napping frequency, from which a summary dyssomnia measure was derived. Self-report assessment of disability included instrumental activities of daily living (IADLs), basic activities of daily living (ADLs), and Rosow-Breslau mobility disability at baseline and at annual evaluations. Results Mean follow-up was 9.6 (SD: 4.2) years. At baseline, more than 60% had one or more sleep complaints. In a series of Cox proportional hazards models controlling for age, sex, and education, a one-point higher dyssomnia score at baseline was associated with about 20% increased risk of IADL disability (hazard ratio: 1.20; 95% confidence interval [CI]: 1.04–1.39; χ21  = 7.62; p
ISSN:1064-7481
1545-7214
DOI:10.1016/j.jagp.2012.12.023