Discrepancies in self-reported and actigraphy-based sleep duration are associated with self-reported insomnia symptoms in community-dwelling older adults
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2021Access:
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Scarlett, S., Nolan, H.N., Kenny, R.A., O'Connell, M.D.L., Discrepancies in self-reported and actigraphy-based sleep duration are associated with self-reported insomnia symptoms in community-dwelling older adults, Sleep Health, 2021 Feb;7(1):83-92.Download Item:
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Abstract:
Objectives: To establish agreement between self-reported and actigraphy-based total sleep time (TST). To determine the impact of self-reported sleep problems on these measurements.
Design: Cross-sectional study using data from Wave 3 of The Irish Longitudinal Study on Ageing (2014–2015).
Participants: Community-dwelling older adults, aged ≥50 years, with self-reported sleep information and ≥4 days of actigraphy-based TST (n = 1520).
Measurement: Self-reported total sleep time, daytime sleepiness, insomnia symptoms (trouble falling asleep, trouble waking too early) measured during a structured self-interview. Actigraphy-based total TST was collected using GENEactiv wrist-worn accelerometers. Demographic characteristics and health information were controlled for. Analyses included descriptive statistics, reliability and agreement analysis using paired t-tests, intra-class correlations and Bland-Altman analysis. Linear regression was used to model associations with measurement discrepancies.
Results: Participants reported that they slept 7.0 hours (SD: 1.4, Range: 2.0–13.0 hours) on average, compared to 7.7 hours (SD: 1.2 hours, Range: 3.0–13.0 hours) recorded by accelerometry. Trouble falling asleep or waking too early “most of the time” were associated with under-reporting of sleep by 2.3, and 2.2 hours respectively. Agreement between measurements had an intra-class correlation of 0.18 and wide 95% limits of agreement (-3.90 to 2.55 hours). Under-reporting of sleep was independently associated with insomnia symptoms.
Conclusion: The agreement between self-reported and actigraphy-based TST in community dwelling older adults was low. Self-reported insomnia symptoms were independently associated with under-reporting of sleep. Studies seeking to measure sleep duration should consider inclusion of questions measuring experience of insomnia symptoms to account for potential influence on measurements.
Author's Homepage:
http://people.tcd.ie/sscarlethttp://people.tcd.ie/rkenny
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Sleep Health;7;
1;
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Older population, Ageing, Actigraphy, Sleep, Accelerometer, Insomnia, Sleep duration, Measurement agreementDOI:
http://dx.doi.org/10.1016/j.sleh.2020.06.003ISSN:
2352-7218Licences: