Department of Psychiatry, China Medical University Hospital, Taichung, Taiwan.
Department of Public Health, China Medical University, Taichung, Taiwan.
Chronobiol Int. 2021 Apr;38(4):518-525. doi: 10.1080/07420528.2021.1885431. Epub 2021 Feb 15.
Both evening chronotype and shift work are associated with depressive symptoms. This study examined whether the association between shift work and mood disorders and sleep problems varies by chronotype. The study population included 10637 participants from the Finnish Hospital Personnel Cohort Study. Work schedule was assessed using repeated questionnaires between 2000 and 2017. Chronotype, assessed using a single item from the Diurnal Type Scale, was categorized into definite morning, somewhat morning, somewhat evening, and definite evening types. The presence of mood disorders was identified by the 12-item General Health Questionnaire. Sleep problems were assessed by self-reported frequency of difficulty falling asleep and maintaining asleep. Longitudinal fixed effects models were used to examine the associations between shift work and the presence of mood disorders and sleep problems, stratified by chronotype. We found that fixed night work was associated with mood disorders among somewhat evening (adjusted odds ratio [OR] 1.91, 95% CI 1.09-3.34) and definite evening-type workers (adjusted OR 2.05, 95% CI 1.06-3.98). Shift work with night shifts was associated with mood disorders among definite evening-type workers (adjusted OR 1.75, 95% CI 1.18-2.60). Similarly, fixed night work was associated with difficulty maintaining sleep only among evening-type workers. In conclusion, evening chronotype increase the vulnerability to mood disorders and sleep disturbances related to night work.
无论是夜间型还是轮班工作都与抑郁症状有关。本研究旨在探讨轮班工作与情绪障碍和睡眠问题之间的关联是否因昼夜类型而异。该研究的人群包括来自芬兰医院人员队列研究的 10637 名参与者。工作时间表通过 2000 年至 2017 年之间的多次问卷调查进行评估。使用“昼夜类型量表”中的单个项目评估昼夜类型，分为明确的早起型、有点早起型、有点晚睡型和明确的晚睡型。通过 12 项一般健康问卷确定情绪障碍的存在。通过自我报告入睡和保持睡眠的频率评估睡眠问题。使用纵向固定效应模型，根据昼夜类型，研究轮班工作与情绪障碍和睡眠问题之间的关联。我们发现，固定的夜班工作与有点晚睡型（调整后的优势比 [OR] 1.91，95%置信区间 [CI] 1.09-3.34）和明确的晚睡型工人（调整后的 OR 2.05，95%CI 1.06-3.98）的情绪障碍有关。夜班轮班工作与明确的晚睡型工人的情绪障碍有关（调整后的 OR 1.75，95%CI 1.18-2.60）。同样，固定的夜班工作仅与夜间型工人的睡眠维持困难有关。总之，夜间型昼夜类型增加了与夜间工作相关的情绪障碍和睡眠障碍的易感性。
