Association of estimated sleep duration and naps with mortality and cardiovascular events: a study of 116 632 people from 21 countries

To investigate the association of estimated total daily sleep duration and daytime nap duration with deaths and major cardiovascular events. We estimated the durations of total daily sleep and daytime naps based on the amount of time in bed and self-reported napping time and examined the association...

Full description

Saved in:
Bibliographic Details
Published in:European heart journal Vol. 40; no. 20; p. 1620
Main Authors: Wang, Chuangshi, Bangdiwala, Shrikant I, Rangarajan, Sumathy, Lear, Scott A, AlHabib, Khalid F, Mohan, Viswanathan, Teo, Koon, Poirier, Paul, Tse, Lap Ah, Liu, Zhiguang, Rosengren, Annika, Kumar, Rajesh, Lopez-Jaramillo, Patricio, Yusoff, Khalid, Monsef, Nahed, Krishnapillai, Vijayakumar, Ismail, Noorhassim, Seron, Pamela, Dans, Antonio L, Kruger, Lanthé, Yeates, Karen, Leach, Lloyd, Yusuf, Rita, Orlandini, Andres, Wolyniec, Maria, Bahonar, Ahmad, Mohan, Indu, Khatib, Rasha, Temizhan, Ahmet, Li, Wei, Yusuf, Salim
Format: Journal Article
Language:English
Published: England 21.05.2019
Subjects:
Naps
Cardiovascular diseases
Mortality
Sleep duration
ISSN:1522-9645, 1522-9645
Online Access:Get more information
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:To investigate the association of estimated total daily sleep duration and daytime nap duration with deaths and major cardiovascular events. We estimated the durations of total daily sleep and daytime naps based on the amount of time in bed and self-reported napping time and examined the associations between them and the composite outcome of deaths and major cardiovascular events in 116 632 participants from seven regions. After a median follow-up of 7.8 years, we recorded 4381 deaths and 4365 major cardiovascular events. It showed both shorter (≤6 h/day) and longer (>8 h/day) estimated total sleep durations were associated with an increased risk of the composite outcome when adjusted for age and sex. After adjustment for demographic characteristics, lifestyle behaviours and health status, a J-shaped association was observed. Compared with sleeping 6-8 h/day, those who slept ≤6 h/day had a non-significant trend for increased risk of the composite outcome [hazard ratio (HR), 1.09; 95% confidence interval, 0.99-1.20]. As estimated sleep duration increased, we also noticed a significant trend for a greater risk of the composite outcome [HR of 1.05 (0.99-1.12), 1.17 (1.09-1.25), and 1.41 (1.30-1.53) for 8-9 h/day, 9-10 h/day, and >10 h/day, Ptrend < 0.0001, respectively]. The results were similar for each of all-cause mortality and major cardiovascular events. Daytime nap duration was associated with an increased risk of the composite events in those with over 6 h of nocturnal sleep duration, but not in shorter nocturnal sleepers (≤6 h). Estimated total sleep duration of 6-8 h per day is associated with the lowest risk of deaths and major cardiovascular events. Daytime napping is associated with increased risks of major cardiovascular events and deaths in those with >6 h of nighttime sleep but not in those sleeping ≤6 h/night.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1522-9645
1522-9645
DOI:10.1093/eurheartj/ehy695