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Night-to-night sleep variability in older adults with and without chronic insomnia
Open accessAbstract
Objectives (1) To quantify night-to-night variability in sleep behaviors and sleep measures among older chronic insomnia (CI) subjects and non-insomnia (NI) controls; (2) to investigate systematic temporal patterns of sleep behaviors and sleep measures across nights; and (3) to examine clinical correlates of sleep variability.Methods Sixty-one older adults with CI (71.4years old, 67% F) and 31 older adults with NI (70.7years old, 65% F) completed questionnaires, kept sleep diaries and wore wrist actigraphs for 2 weeks. Mixed models were used to estimate within-subject mean and standard deviation values; these were then compared across groups. Mixed models were also used to determine associations across nights of sleep measures.Results CI and NI differed on mean values for clinical ratings and sleep diary measures, but not for actigraphy measures. CI also showed significantly greater variability than NI on most sleep diary measures and on actigraphically measured wakefulness after sleep onset (WASO) and sleep efficiency. Among CI, neither diary nor actigraphy measures from one night correlated with values from the previous night. Diary WASO, sleep time, actigraphy sleep latency and sleep time, however, positively correlated with values from the previous two nights. Variability measures were not correlated with other global clinical measures among CI.Conclusions Compared to NI, older adults with CI report worse sleep and greater night-to-night variability, which was confirmed with actigraphy. There was little evidence for positive or negative correlation of sleep measures across nights. Variability of sleep may be an important target for insomnia treatments.
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Metadata
- Authors
- Buysse, D. J., Cheng, Y., Germain, A., Moul, D. E., Franzen, P. L., Fletcher, M., & Monk, T. H.
- Affiliations
- University of Pittsburgh (US)
- Louisiana State University (US)
- Venue
- Sleep Medicine
- Publisher
- Elsevier BV
- Published
- 2010-01
- Volume
- 11
- Issue
- 1
- Pages
- 56-64
- ISSN
- 1389-9457 (ISSN-L)
- PMC
- PMC2818595
- OpenAlex
- W2130684765
- Cited by
- 252
- References
- 55
- Citations by year
- 2026: 10 · 2025: 12 · 2024: 18 · 2023: 17 · 2022: 27 · 2021: 21 · 2020: 16 · 2019: 16 · 2018: 12 · 2017: 20 · 2016: 10 · 2015: 18 · 2014: 19 · 2013: 11 · 2012: 12
- FWCI
- 10.58
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Licence
- Locations
- Sleep Medicine (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institutes of Health (UL1TR000005)
- National Institute on Aging (AG20677, P01AG020677)
- National Institute of Mental Health (R01MH024652, MH 24652, R37MH024652)
- National Center for Research Resources (RR-024153, RR 000 52, UL1RR024153, M01RR000052)
- National Center for Advancing Translational Sciences
- Topics
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
- Keywords
- chronic insomnia, older adults, sleep diary, actigraphy, wake after sleep onset, sleep efficiency, sleep latency, sleep duration
- MeSH terms
- Age Factors, Aged, Chronic Disease, Circadian Rhythm, Cross-Sectional Studies, Female, Health Surveys, Humans, Sleep Initiation and Maintenance Disorders, Male, Reference Values, Statistics as Topic, United States, Actigraphy
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