Self-reported versus actigraphy-assessed sleep duration in the ELSA-Brasil study: analysis of the short/long sleep duration reclassification

Author(s):Show less -

Santos, Ronaldo B. ^{[1, 2]} ; Giatti, Soraya ^{[1, 3]} ; Aielo, Aline N. ^{[1, 3]} ; Silva, Wagner A. ^{[1, 2]} ; Parise, Barbara K. ^{[1, 3]} ; Cunha, Lorenna F. ^{[1, 3]} ; Souza, Silvana P. ^{[1, 2]} ; Alencar, Airlane P. ^[4] ; Lotufo, Paulo A. ^[1] ; Bensenor, Isabela M. ^[1] ; Drager, Luciano F. ^{[1, 2, 3]}

Affiliation

^[1] Univ Sao Paulo, Ctr Clin & Epidemiol Res CPCE, Av Prof Lineu Prestes 2565, 4 Andar, Cidade Univ, BR-05508000 Sao Paulo, SP - Brazil

^[2] Univ Sao Paulo, Fac Med, Inst Coracao InCor, Unidade Hipertensao, Sao Paulo - Brazil

^[3] Univ Sao Paulo, Fac Med, Disciplina Nefrol, Unidade Hipertensao, Sao Paulo - Brazil

^[4] Univ Sao Paulo, Inst Math & Stat, Dept Stat, Sao Paulo, SP - Brazil

• Document type: Journal article
• Source: Sleep and Breathing; NOV 2021.
• Web of Science Citations: 0

Abstract

Purpose This study was aimed to determine the magnitude and predictors of self-reported short/long sleep duration (SDUR) reclassifications using objective measurements. Methods Adult participants from the ELSA-Brasil study performed self-reported SDUR, 7-day wrist actigraphy, and a portable sleep study. We explored two strategies of defining self-reported SDUR reclassification: (1) short and long SDUR defined by <6 and >= 8h, respectively; (2) reclassification using a large spectrum of SDUR categories (<5, 5-6, 7-8, 8-9, and >9 h). Results Data from 2036 participants were used in the final analysis (43% males; age: 49 +/- 8 years). Self-reported SDUR were poorly correlated (r=0.263) and presented a low agreement with actigraphy-based total sleep time. 58% of participants who self-reported short SDUR were reclassified into the reference (6-7.99 h) or long SDUR groups using actigraphy data. 88% of participants that self-reported long SDUR were reclassified into the reference and short SDUR. The variables independently associated with higher likelihood of self-reported short SDUR reclassification included insomnia (3.5-fold), female (2.5-fold), higher sleep efficiency (1.35-fold), lowest O-2 saturation (1.07-fold), higher wake after sleep onset (1.08-fold), and the higher number of awakening (1.05-fold). The presence of hypertension was associated with a 3.4-fold higher chance of self-reported long SDUR reclassification. Analysis of five self-reported SDUR categories revealed that the more extreme is the SDUR, the greater the self-reported SDUR reclassification. Conclusion In adults, we observed a significant rate of short/long SDUR reclassifications when comparing self-reported with objective data. These results underscore the need to reappraise subjective data use for future investigations addressing SDUR. (AU)

• FAPESP's process: 12/02953-2 - Impact of obstructive sleep apnea and sleep duration on the progression of cardiovascular diseases
• Grantee: Luciano Ferreira Drager
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 19/23496-8 - Impact of sleep disorders on hypertension: a multifaceted approach
• Grantee: Luciano Ferreira Drager
• Support Opportunities: Research Projects - Thematic Grants