d'Onofrio Paolo, Jernelöv Susanna, Rosén Ann, Blom Kerstin, Kaldo Viktor, Schwarz Johanna, Åkerstedt Torbjörn
Stress Research Institute, Department of Psychology, Stockholm University, 10691 Stockholm, Sweden.
Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, & Stockholm Health Care Services, Region Stockholm, 14186 Stockholm, Sweden.
Brain Sci. 2023 Oct 7;13(10):1426. doi: 10.3390/brainsci13101426.
Reports of poor sleep are widespread, but their link with objective sleep (polysomnography-PSG) is weak in cross-sectional studies. In contrast, the purpose of this study was to investigate the association between changes in subjective and objective sleep variables using data from a study of the reduction in time in bed (TIB).
One sleep recording was carried out at baseline and one at treatment week 5 (end of treatment) (N = 34).
The Karolinska Sleep Quality Index improved and was correlated with improvement in sleep efficiency (r = 0.41, < 0.05) and reduction in TIB (r = -0.47, < 0.01) and sleep latency (r = 0.36, < 0.05). The restorative sleep index showed similar results. Improvements in the insomnia severity index (ISI) essentially lacked correlations with changes in the PSG variables. It was suggested that the latter may be due to the ISI representing a week of subjective sleep experience, of which a single PSG night may not be representative.
It was concluded that changes in the subjective ratings of sleep are relatively well associated with changes in the PSG-based sleep continuity variables when both describe the same sleep.
睡眠质量差的报告很普遍,但在横断面研究中,它们与客观睡眠(多导睡眠图-PSG)的联系较弱。相比之下,本研究的目的是利用一项关于卧床时间(TIB)减少的研究数据,调查主观和客观睡眠变量变化之间的关联。
在基线时进行一次睡眠记录,在治疗第5周(治疗结束时)进行一次睡眠记录(N = 34)。
卡罗林斯卡睡眠质量指数有所改善,且与睡眠效率的提高(r = 0.41,<0.05)、TIB的减少(r = -0.47,<0.01)以及睡眠潜伏期的缩短(r = 0.36,<0.05)相关。恢复性睡眠指数显示出类似的结果。失眠严重程度指数(ISI)的改善与PSG变量的变化基本缺乏相关性。有人认为,后者可能是由于ISI代表了一周的主观睡眠体验,而单个PSG夜间可能不具有代表性。
得出的结论是,当主观睡眠评分变化和基于PSG的睡眠连续性变量变化都描述同一睡眠时,两者之间的相关性相对较好。