Abstract
Introduction This study tested the hypotheses that late-midlife obstructive sleep apnea (OSA) and short and long sleep duration are associated with dementia over 15 years of follow-up. Methods A total of 1667 Atherosclerosis Risk in Communities Study participants underwent in-home polysomnography (1996–1998) and were followed for dementia. Dementia was defined by (1) hospitalization diagnosis codes (1996–2012) and (2) a comprehensive neurocognitive examination (2011–2013) with adjudication. Results OSA and sleep duration were not associated with risk of incident dementia. When using adjudicated outcomes, severe OSA (≥30 vs. <5 apnea-hypopnea events/hour) was associated with higher risk of all-cause dementia (risk ratio [95% confidence interval], 2.35 [1.06–5.18]) and Alzheimer's disease dementia (1.66 [1.03–2.68]); associations were attenuated with cardiovascular risk factor adjustment. Sleeping <7 versus 8 to ≤9 hours was associated with higher risk of all-cause dementia (2.00 [1.03–3.86]). Discussion When adjudicated outcome definitions were used, late-midlife OSA and short sleep duration were associated with all-cause and Alzheimer's disease dementia in later life.
Original language | English (US) |
---|---|
Pages (from-to) | 157-166 |
Number of pages | 10 |
Journal | Alzheimer's and Dementia |
Volume | 14 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2018 |
Keywords
- Alzheimer's disease
- Atherosclerosis Risk in Communities (ARIC) Study
- Dementia
- Mild cognitive impairment
- Obstructive sleep apnea
- Sleep Heart Health Study (SHHS)
- Sleep duration
ASJC Scopus subject areas
- Epidemiology
- Health Policy
- Developmental Neuroscience
- Clinical Neurology
- Geriatrics and Gerontology
- Psychiatry and Mental health
- Cellular and Molecular Neuroscience