Self-reported and measured sleep duration: how similar are they?
Self-reported and measured sleep duration: how similar are they?
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DOI：
10.1097/ede.0b013e318187a7b0
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发表时间：
2008-11
期刊：
影响因子：
--
通讯作者：
Rathouz PJ
中科院分区：
文献类型：
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作者：
Lauderdale DS;Knutson KL;Yan LL;Liu K;Rathouz PJ
最近的流行病学研究发现，睡眠时间与肥胖、糖尿病、高血压和死亡率有关。这些研究使用了自我报告的习惯睡眠持续时间，这一点尚未得到很好的验证。我们模拟了自我报告的习惯性睡眠在多大程度上反映了客观测量的平均睡眠。芝加哥青年冠状动脉风险发展研究的合格参与者被邀请参加2003-2004年的辅助睡眠研究；82%(n=669)表示同意。在两个波中收集的睡眠测量包括：3天的手腕动作记录，睡眠日志，以及关于正常睡眠持续时间的标准问题。平均测量睡眠时间为6小时，主观报告平均比测量睡眠时间长0.80小时。主观报告没有得到很好的校准，每多测量一小时睡眠，平均增加31分钟。我们的模型表明，睡眠5小时和7小时的人平均分别多报1.3小时和0.3小时。总体而言，报告和测量的睡眠时间之间的相关性为0.45。高估、校准和相关性的程度因个人和睡眠特征而异。尽管询问睡眠时间似乎并不复杂，但在这群人中，自我报告的睡眠和客观测量的睡眠之间的相关性是适度的和系统性的偏见。
Recent epidemiologic studies have found that sleep duration is associated with obesity, diabetes, hypertension and mortality. These studies have used self-reported habitual sleep duration, which has not been well validated. We model the extent to which self-reported habitual sleep reflects average objectively measured sleep. Eligible participants at the Chicago site of Coronary Artery Risk Development in Young Adults Study were invited to participate in a 2003-2004 ancillary sleep study; 82% (n=669) agreed. Sleep measurements collected in two waves included: 3-days of wrist actigraphy, a sleep log, and standard questions about usual sleep duration. Average measured sleep was 6 hours, and subjective reports averaged 0.80 hours longer than measured sleep. Subjective reports were not well calibrated, increasing on average by 31 minutes for each additional hour of measured sleep. Our model suggests that persons sleeping 5 and 7 hours over-reported, on average, by 1.3 and 0.3 hours respectively. Overall, there was a correlation of 0.45 between reported and measured sleep duration. The extent of overestimation, calibration and correlation varied by personal and sleep characteristics. Although asking about sleep duration seems uncomplicated, the correlation between self-reported and objectively-measured sleep in this population was moderate and systematically biased.