Department of Psychology, School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China.
Center for Health Behaviours Research, JC School of Public Health and Primary Care, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China.
J Affect Disord. 2022 Feb 15;299:45-51. doi: 10.1016/j.jad.2021.11.033. Epub 2021 Nov 20.
Sleep quality is an important indicator of quality of life. It is of importance to investigate the risk factors and potential consequences of poor sleep quality, such as perceived stress and suicidal ideation. We therefore investigated the longitudinal and reciprocal relationships among perceived stress, suicidal ideation, and sleep quality.
A three-wave longitudinal survey was conducted from June 2019 to June 2020 at six-month intervals in undergraduate students (N = 197, 58.9% female) in China. The participants completed self-report questionnaires in classroom settings.
While the levels of perceived stress were stable, levels of suicidal ideation and sleep quality fluctuated significantly over time. There were significant reciprocal relationships between perceived stress and suicidal ideation from T1 to T3. In addition, the reciprocal relationships between suicidal ideation and sleep quality from T1 to T2 were also significant. Suicidal ideation at T2 partially mediated the relationship between perceived stress at T1 and sleep quality at T3 (indirect effect: β=0.06, 95% CI: 0.04 to 0.10, p<0.001), and suicidal ideation at T2 fully mediated the relationship between sleep quality at T1 and perceived stress at T3 (indirect effect: β=0.48, 95% CI: 0.30, 0.70, p<0.001).
The subjects' educational background is single, and the measurement method is self-report measures.
Suicidal ideation may play a significant role in explaining the longitudinal relationships between perceived stress and sleep quality. And suggest the importance of early identification and treatment of suicidal ideation among Chinese undergraduates.
睡眠质量是生活质量的一个重要指标。研究睡眠质量差的风险因素和潜在后果（如感知压力和自杀意念）非常重要。因此，我们调查了感知压力、自杀意念和睡眠质量之间的纵向和相互关系。
我们在中国的本科生中进行了一项为期三年的纵向调查，从 2019 年 6 月至 2020 年 6 月，每六个月进行一次。参与者在课堂环境中完成了自我报告的问卷。
虽然感知压力的水平保持稳定，但自杀意念和睡眠质量的水平在时间上波动很大。从 T1 到 T3，感知压力和自杀意念之间存在显著的相互关系。此外，从 T1 到 T2，自杀意念和睡眠质量之间的相互关系也具有显著意义。T2 时的自杀意念部分中介了 T1 时的感知压力与 T3 时的睡眠质量之间的关系（间接效应：β=0.06，95%置信区间：0.04 至 0.10，p<0.001），T2 时的自杀意念完全中介了 T1 时的睡眠质量与 T3 时的感知压力之间的关系（间接效应：β=0.48，95%置信区间：0.30，0.70，p<0.001）。
研究对象的教育背景单一，测量方法为自我报告法。
自杀意念可能在解释感知压力和睡眠质量之间的纵向关系方面起着重要作用。并建议重视中国大学生中自杀意念的早期识别和治疗。
