Siobhan Scarlett1, Hugh N Nolan2, Rose Anne Kenny3, Matthew D L O'Connell4. 1. The Irish Longitudinal Study on Ageing, Trinity College Dublin, University of Dublin, Ireland. Electronic address: sscarlet@tcd.ie. 2. The Irish Longitudinal Study on Ageing, Trinity College Dublin, University of Dublin, Ireland. 3. The Irish Longitudinal Study on Ageing, Trinity College Dublin, University of Dublin, Ireland; Mercer's Institute for Successful Ageing, St James's Hospital, Dublin, Ireland. 4. The Irish Longitudinal Study on Ageing, Trinity College Dublin, University of Dublin, Ireland; Department of Population Health Sciences, School of Population Health and Environmental Sciences, Kings College London, London, United Kingdom.
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.
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.
Authors: Yeonsu Song; Raeanne C Moore; Dilip V Jeste; Mary-Lynn Brecht; Sonia Ancoli-Israel; Brent T Mausbach; Igor Grant Journal: J Clin Sleep Med Date: 2022-08-01 Impact factor: 4.324
Authors: Massimiliano de Zambotti; Luca Menghini; Michael A Grandner; Susan Redline; Ying Zhang; Meredith L Wallace; Orfeu M Buxton Journal: Sleep Health Date: 2022-05-03