Department of Clinical and Health Psychology, University of Florida, Gainesville, FL 32610, USA.
J Gerontol B Psychol Sci Soc Sci. 2013 Sep;68(5):712-20. doi: 10.1093/geronb/gbt030. Epub 2013 Jun 26.
Discrepancy between self-report- and actigraphy-measured sleep, often considered an artifact of measurement error, has been well documented among insomnia patients. Sleep problems are common among older adults, and this discrepancy may represent meaningful sleep-related phenomenon, which could have clinical and research significance.
Sleep discrepancy was examined in 4 groups of older adults (N = 152, mean age = 71.93 years) based on sleep complaint versus no complaint and presence versus absence of insomnia symptoms. Participants completed the Beck Depression Inventory-second edition (BDI-II) and 14 nights of sleep diaries and actigraphy.
Controlling for covariates, group differences were found in the duration and frequency of discrepancy in sleep onset latency (SOLd) and wake after sleep onset (WASOd). Those with insomnia symptoms and complaints reported greater duration and frequency of WASOd than the other 3 groups. Quantities of SOLd and WASOd were related to BDI-II score and group status, indicating that sleep discrepancy has meaningful clinical correlates.
Discrepancy occurred across all groups but was pronounced among the group with both insomnia symptoms and complaints. This discrepancy may provide a means of quantifying and conceptualizing the transition from wake to sleep among older adults, particularly those with sleeping problems.
自我报告和活动记录仪测量的睡眠之间的差异，通常被认为是测量误差的一种表现，在失眠患者中已有充分的记录。睡眠问题在老年人中很常见，这种差异可能代表着有意义的与睡眠相关的现象，这可能具有临床和研究意义。
根据睡眠主诉与无主诉以及是否存在失眠症状，对 4 组老年受试者（N=152，平均年龄 71.93 岁）的睡眠差异进行了检查。参与者完成贝克抑郁量表第二版（BDI-II）和 14 个晚上的睡眠日记和活动记录仪。
控制协变量后，在睡眠潜伏期（SOLd）和睡眠后觉醒（WASOd）的差异持续时间和频率方面发现了组间差异。有失眠症状和主诉的受试者比其他 3 组报告的 WASOd 持续时间和频率更长。SOLd 和 WASOd 的数量与 BDI-II 评分和组状态有关，这表明睡眠差异具有有意义的临床相关性。
差异发生在所有组中，但在同时有失眠症状和主诉的组中更为明显。这种差异可能为量化和概念化老年人从清醒到睡眠的过渡提供了一种方法，特别是那些有睡眠问题的老年人。
