Steptoe Andrew, Peacey Victoria, Wardle Jane
Psychobiology Group, Department of Epidemiology and Public Health, University College London, London, England.
Arch Intern Med. 2006 Sep 18;166(16):1689-92. doi: 10.1001/archinte.166.16.1689.
Both long and short sleep durations have been associated with negative health outcomes in middle-aged and older adults. This study assessed the relationship between sleep duration and self-rated health in young adults.
Using anonymous questionnaires, data were collected from 17 465 university students aged 17 to 30 years who were taking non-health-related courses at 27 universities in 24 countries. The response rate was greater than 90%. Sleep duration was measured by self-report; the health outcome was self-rated health; and age, sex, socioeconomic background, smoking, alcohol consumption, body mass index, physical activity, depression (Beck Depression Inventory), recent use of health services, and country of origin were included as covariates.
Sixty-three percent of respondents slept for 7 to 8 hours; 21% were short sleepers (6%, <6 hours; 15%, 6-7 hours); and 16% were long sleepers (10%, 8-10 hours; 6%, >10 hours). Compared with the reference category (7-8 hours), the adjusted odds ratio of poor health was 1.56 (95% confidence interval [CI], 1.22-1.99) for respondents sleeping 6 to 7 hours and 1.99 (95% CI, 1.31-3.03) for those sleeping less than 6 hours. The same significant pattern was seen when the results were analyzed separately by sex. When respondents from Japan, Korea, and Thailand (characterized by relatively short sleep durations) were excluded, the adjusted odds ratios were 1.33 (95% CI 1.03-1.73) and 1.62 (95% CI, 1.06-2.48) for those sleeping 6 to 7 hours and less than 6 hours, respectively. There were no significant associations between self-rated health and long sleep duration.
Our data suggest that short sleep may be more of a concern than long sleep in young adults.
在中老年人中，睡眠时间过长和过短均与不良健康后果相关。本研究评估了年轻人睡眠时间与自评健康之间的关系。
通过匿名问卷调查，收集了来自24个国家27所大学17465名年龄在17至30岁、修读非健康相关课程的大学生的数据。应答率超过90%。睡眠时间通过自我报告测量；健康结局为自评健康；年龄、性别、社会经济背景、吸烟、饮酒、体重指数、体育活动、抑郁（贝克抑郁量表）、近期医疗服务使用情况和原籍国作为协变量纳入。
63%的受访者睡眠时间为7至8小时；21%为短睡眠者（6%，<6小时；15%，6至7小时）；16%为长睡眠者（10%，8至10小时；6%，>10小时）。与参照组（7至8小时）相比，睡眠时间为6至7小时的受访者健康状况不佳的调整优势比为1.56（95%置信区间[CI]，1.22至1.99），睡眠时间少于6小时的受访者为1.99（95%CI，1.31至3.03）。按性别分别分析结果时，也出现了相同的显著模式。排除来自日本、韩国和泰国（以睡眠时间相对较短为特征）的受访者后，睡眠时间为6至7小时和少于6小时的受访者调整优势比分别为1.33（95%CI 1.03至1.73）和1.62（95%CI，1.06至2.48）。自评健康与长睡眠时间之间无显著关联。
我们的数据表明，在年轻人中，短睡眠可能比长睡眠更值得关注。
