Jin Mengjia, Tian Liuhong, Yu Jie, Kuang Xiaodan, Fang Jiaming, Chen Shulei, Shi Hongying
Department of Epidemiology and Health Statistics, School of Public Health, Wenzhou Medical University, Wenzhou, Zhejiang, China.
PeerJ. 2025 May 27;13:e19459. doi: 10.7717/peerj.19459. eCollection 2025.
Evidence has suggested that prolonged sleep latency was associated with negative health outcomes. Little is known about the association between sleep latency and health status in university students. This study examined the association between sleep latency and suboptimal self-rated health (SRH) in medical students.
A cross-sectional study was conducted involving 1,396 medical students aged 18 years and older selected through stratified cluster random sampling from an eastern Chinese university. Standardized measures of sleep latency and SRH were administered. Sleep latency was divided into four categories: <10 min, 10-19 min, 20-29 min, and ≥30 min, with "prolonged sleep latency" defined as a latency of ≥30 min. Logistic regression was used to investigate the association between sleep latency and suboptimal SRH.
Of the 1,396 participants (mean age 19.6 ± 1.2 years; 58.6% female), 599 (42.9%) reported suboptimal SRH, and 390 (27.9%) reported prolonged sleep latency. Longer sleep latency was associated with higher odds of suboptimal SRH. Comparing those with sleep latency <10 min, multivariable-adjusted (95% ) for those with sleep latency of 10-19 min, 20-29 min, and ≥30 min were 1.48 (1.07, 2.05), 2.03 (1.39, 2.97), and 2.12 (1.52, 2.96) ( for trend <0.001), respectively. The results of the stratified and sensitivity analyses were generally consistent with the main findings.
Our study found that prolonged sleep latency was strongly linked to higher odds of suboptimal SRH in medical students, even after accounting for potential confounders. Intervention programs targeting sleep latency may potentially promote health in this population.
有证据表明，较长的入睡潜伏期与不良健康结果相关。关于大学生入睡潜伏期与健康状况之间的关联，人们了解甚少。本研究调查了医学生入睡潜伏期与自我评定健康状况欠佳（SRH）之间的关联。
进行了一项横断面研究，从中国东部一所大学通过分层整群随机抽样选取了1396名18岁及以上的医学生。采用标准化方法测量入睡潜伏期和SRH。入睡潜伏期分为四类：<10分钟、10 - 19分钟、20 - 29分钟和≥30分钟，“较长入睡潜伏期”定义为潜伏期≥30分钟。采用逻辑回归分析入睡潜伏期与欠佳SRH之间的关联。
在1396名参与者中（平均年龄19.6±1.2岁；58.6%为女性），599人（42.9%）报告SRH欠佳，390人（27.9%）报告入睡潜伏期较长。较长的入睡潜伏期与欠佳SRH的较高几率相关。与入睡潜伏期<10分钟的人相比，入睡潜伏期为10 - 19分钟、20 - 29分钟和≥30分钟的多变量调整比值比（95%置信区间）分别为1.48（1.07，2.05）、2.03（1.39，2.97）和2.12（1.52，2.96）（趋势P<0.001）。分层分析和敏感性分析结果与主要发现基本一致。
我们的研究发现，即使在考虑潜在混杂因素后，较长的入睡潜伏期与医学生中欠佳SRH的较高几率密切相关。针对入睡潜伏期的干预项目可能有助于促进该人群的健康。
