Variability in Self-Reported Normal Sleep Across the Adult Age Span

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dc.contributor.author Dillon, Haley R.
dc.contributor.author Lichstein, Kenneth
dc.contributor.author Dautovich, Natalie D.
dc.contributor.author Taylor, Daniel J.
dc.contributor.author Riedel, Brant W.
dc.contributor.author Bush, Andrew J.
dc.date.accessioned 2021-04-23T21:11:59Z
dc.date.available 2021-04-23T21:11:59Z
dc.date.issued 2014-05
dc.identifier.citation Dillon, H., Lichstein, K., Dautovich, N., Taylor, D., Riedel, B., Bush A. (2014): Variability in Self-Reported Normal Sleep Across the Adult Age Span. The Journals of Gerontology: Series B, 70(1). en_US
dc.identifier.uri http://ir.ua.edu/handle/123456789/7553
dc.description.abstract Objective: Illustrate the importance of examining both within- and between-person differences in sleep across the adult age-span. Method: Two weeks of sleep diary data were analyzed for 592 normal sleepers ranging in age from 20 to 96 years. Variability in total sleep time (TST), nighttime awakenings (NWAK), sleep-onset latency (SOL), and wake time after sleep-onset (WASO) was examined overall and by age, sex, and race. Multilevel models described the extent to which self-reported sleep varied within- and between-individuals across the two-week period. Multiple regression analyses tested for age, sex, and race differences in intra-individual variability. Results: Night-to-night differences in sleep within the same individual generally exceeded differences between individuals for TST, SOL, and WASO. The amount of intraindividual variability in TST and NWAK decreased with older age. Further, the degree of reduction in variability in TST associated with age depended on sex and race, with young Black females showing the greatest variability. In general, females tended to have more intra-individual variability in SOL and NWAK than males, while race differences were complicated by high variability between-Blacks. Discussion: To truly assess and understand individual differences in the sleep of older adults, future research needs to take into account night-to-night variability (including what makes sleep vary from one night to the next), in addition to average sleep. en_US
dc.description.uri https://doi.org/10.1093/geronb/gbu035
dc.format.mimetype application/pdf
dc.language English en_US
dc.subject sleep en_US
dc.subject intra-individual variability en_US
dc.subject age-related change en_US
dc.title Variability in Self-Reported Normal Sleep Across the Adult Age Span en_US
dc.type text


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