Department of Neurosurgery, Hallym University College of Medicine, Anyang, South Korea.
Hallym Data Science Laboratory, Hallym University College of Medicine, Anyang, South Korea.
Sleep Med. 2021 Jul;83:123-131. doi: 10.1016/j.sleep.2021.04.031. Epub 2021 Apr 28.
Little is known concerning whether subjective cognitive decline (SCD) is associated with sleep quality. This study aimed to identify the association between self-reported quality of sleep and SCD in a large population of middle-aged and older adults in Korea.
We conducted this study based on data collected from the 2018 Korean Community Health Survey. Individuals aged 40 years and older who responded to the Behavioral Risk Factor Surveillance System (BRFSS) and Pittsburgh Sleep Quality Index (PSQI) assessments and did not lack data about multiple covariates were included. A total of 37,712 respondents with SCD and 135,119 those without SCD were included. Sleep quality was estimated using the PSQI, which includes seven self-reported components for sleep health assessment. SCD was assessed using the BRFSS. Logistic regression models adjusted for confounders were used to examine whether each component of the sleep quality index was related to SCD. Additional analysis of the correlation between quantified scores for each component and SCD-related functional limitations as ordinal variables was performed.
The mean age was 62.7 years in the SCD group and 56.4 years in the control group. In total, 13,777 (28.9%) respondents were male in the SCD group and 62,439 (50.7%) in the control group. The adjusted odds ratios of SCD were 1.25 for very bad sleep quality, 1.26 for long sleep latency, 1.16 for <5 h of sleep duration, 1.08 for <65% habitual sleep efficiency, 2.29 for high sleep disturbance, 1.26 for use of sleep medication ≥3 times a week, and 2.47 for high daytime dysfunction due to sleep problems compared to good sleep conditions. Furthermore, a higher score for each component of the sleep quality index correlated with greater SCD-related functional limitations.
Our study provides evidence that poor sleep quality is closely related to both SCD and SCD-related functional limitations.
关于主观认知下降(SCD)是否与睡眠质量有关知之甚少。本研究旨在韩国的中年和老年人中,确定自我报告的睡眠质量与 SCD 之间的关联。
我们基于 2018 年韩国社区健康调查的数据进行了这项研究。参与行为风险因素监测系统(BRFSS)和匹兹堡睡眠质量指数(PSQI)评估且没有多项协变量数据缺失的年龄在 40 岁及以上的个体被纳入研究。共纳入 37712 名 SCD 患者和 135119 名非 SCD 患者。使用 PSQI 评估睡眠质量,PSQI 包括 7 个用于睡眠健康评估的自我报告组成部分。使用 BRFSS 评估 SCD。使用调整混杂因素的 logistic 回归模型,检验睡眠质量指数的每个组成部分与 SCD 是否相关。对每个组成部分的量化得分与 SCD 相关的功能限制作为有序变量之间的相关性进行了额外分析。
SCD 组的平均年龄为 62.7 岁,对照组为 56.4 岁。在 SCD 组中,共有 13777 名(28.9%)男性和 62439 名(50.7%)女性在对照组中。SCD 的调整比值比为:睡眠质量非常差为 1.25,睡眠潜伏期长为 1.26,睡眠时长<5 小时为 1.16,习惯性睡眠效率<65%为 1.08,睡眠障碍高为 2.29,每周使用睡眠药物≥3 次为 1.26,因睡眠问题白天功能障碍高为 2.47。此外,睡眠质量指数的每个组成部分得分越高,与 SCD 相关的功能限制越大。
我们的研究表明,睡眠质量差与 SCD 和 SCD 相关的功能限制密切相关。