Linn B Strand1, Min Kuang Tsai2, David Gunnell3, Imre Janszky4, Chi Pang Wen5, Shu-Sen Chang6. 1. Department of Public Health and General Practice, Norwegian University of Science and Technology, Hakon Jarls gate 11, 7495 Trondheim, Norway. 2. Institute of Population Health Sciences, National Health Research Institutes, 35 Keyan Road, Zhunan Town, Miaoli County 35053, Taiwan. 3. School of Social and Community Medicine, University of Bristol, 39 Whatley Road, Bristol BS8 2PS, United Kingdom. 4. Department of Public Health and General Practice, Norwegian University of Science and Technology, Hakon Jarls gate 11, 7495 Trondheim, St Olav Hospital, Prinsesse Kristinas gate 3, Norway and Center for Health Care Research, 7030 Trondheim, Norway. 5. China Medical University Hospital, 91 Hsueh-Shih Road, Taichung City 40402, Taiwan; and Institute of Population Health Science, National Health Research Institutes, 35 Keyan Road, Zhunan Town, Miaoli County 35053, Taiwan. Electronic address: cwengood@nhri.org.tw. 6. Institute of Health Behaviors and Community Sciences and Department of Public Health, College of Public Health, National Taiwan University, No.17, Xu-zhou Road, Taipei City 10055, Taiwan. Electronic address: shusenchang@ntu.edu.tw.
Abstract
BACKGROUND: Most previous studies on sleep duration and coronary heart disease (CHD) have been small and have inadequately controlled for cardiovascular risk factors and chronic diseases. Therefore, our aim was to prospectively examine the associations of sleep duration with CHD while accounting for these factors. METHODS: Prospective cohort study of 392 164 adults at age 20years or older who attended a health check-up program from 1994 to 2011 in Taiwan and who have information on sleep duration, sleep medications and potential confounders. Participants answered the question: "How long do you sleep for?"-there were four response categories: (a) 0-4h; (b) 4-6h; (c) 6-8h and (d) >8h. The participants were then followed for CHD mortality from the Taiwanese cause-of-death register. RESULTS: When compared to those who slept 6-8h per night, the risk of dying from CHD was increased by 34% (HR 1.34, 95% Confidence Interval [CI] 0.87-2.07) and 35% (HR 1.35, 95% CI 1.11-1.65) in those who slept less than 4h per night and more than 8h per night, respectively. When stratifying by sex and age, we found some evidence for a stronger U-shaped association in females than in males and in older adults than in younger adults (p for interaction=0.01 and 0.13, respectively). CONCLUSIONS: Adequate sleep duration should be considered an important component of a healthy lifestyle. Further studies are needed to better elucidate the underlying mechanisms.
BACKGROUND: Most previous studies on sleep duration and coronary heart disease (CHD) have been small and have inadequately controlled for cardiovascular risk factors and chronic diseases. Therefore, our aim was to prospectively examine the associations of sleep duration with CHD while accounting for these factors. METHODS: Prospective cohort study of 392 164 adults at age 20years or older who attended a health check-up program from 1994 to 2011 in Taiwan and who have information on sleep duration, sleep medications and potential confounders. Participants answered the question: "How long do you sleep for?"-there were four response categories: (a) 0-4h; (b) 4-6h; (c) 6-8h and (d) >8h. The participants were then followed for CHD mortality from the Taiwanese cause-of-death register. RESULTS: When compared to those who slept 6-8h per night, the risk of dying from CHD was increased by 34% (HR 1.34, 95% Confidence Interval [CI] 0.87-2.07) and 35% (HR 1.35, 95% CI 1.11-1.65) in those who slept less than 4h per night and more than 8h per night, respectively. When stratifying by sex and age, we found some evidence for a stronger U-shaped association in females than in males and in older adults than in younger adults (p for interaction=0.01 and 0.13, respectively). CONCLUSIONS: Adequate sleep duration should be considered an important component of a healthy lifestyle. Further studies are needed to better elucidate the underlying mechanisms.
Authors: Tien-Yu Chen; John W Winkelman; Wei-Chung Mao; Chin-Bin Yeh; San-Yuan Huang; Tung-Wei Kao; Cheryl C H Yang; Terry B J Kuo; Wei-Liang Chen Journal: J Clin Sleep Med Date: 2019-01-15 Impact factor: 4.062
Authors: Xiang Qian Lao; Xudong Liu; Han-Bing Deng; Ta-Chien Chan; Kin Fai Ho; Feng Wang; Roel Vermeulen; Tony Tam; Martin C S Wong; L A Tse; Ly-Yun Chang; Eng-Kiong Yeoh Journal: J Clin Sleep Med Date: 2018-01-15 Impact factor: 4.062
Authors: Rosalba Hernandez; Thanh-Huyen T Vu; Kiarri N Kershaw; Julia K Boehm; Laura D Kubzansky; Mercedes Carnethon; Claudia Trudel-Fitzgerald; Kristen L Knutson; Laura A Colangelo; Kiang Liu Journal: Behav Med Date: 2019-07-24 Impact factor: 3.879