Nomura Kyoko, Nakao Mutsuhiro, Takeuchi Takeaki, Yano Eiji
Department of Hygiene and Public Health, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-ku, Tokyo 173-8605, Japan.
Sleep Med. 2009 Jun;10(6):626-9. doi: 10.1016/j.sleep.2008.06.010. Epub 2008 Oct 29.
To assess the relationship between job stress and insomnia among office workers.
This cross-sectional study examined 1209 male workers (mean age 43 years) at periodic health checkups in 2007. Insomnia was defined as consistently experiencing any of three sleep disorder symptoms (i.e., difficulty initiating sleep, difficulty maintaining sleep, and early-morning awakening) in a recent two-week period. Job stress indices included job demand, control, strain (job demand/control), and social support, as measured by the Job Content Questionnaire.
The prevalence of insomnia was 4.7%. After adjusting for age, perceived daily stress, sleep dissatisfaction, lifestyle factors, and physical comorbidities, the risk of insomnia increased with a higher degree of job strain (odds ratio 2.3, 95% confidence intervals 1.3-4.0) and decreased with a higher degree of job control (0.5, 0.3-0.8). The combination of high job strain with low degree of control or social support had an approximately three times higher risk of insomnia than that of low job strain with high degree of control or support.
Both job strain and job control had an independent effect on insomnia, and the association between job strain and insomnia was mediated by the buffering effects of control and support.
评估上班族工作压力与失眠之间的关系。
这项横断面研究对2007年定期健康体检的1209名男性工作者（平均年龄43岁）进行了检查。失眠被定义为在最近两周内持续出现以下三种睡眠障碍症状中的任何一种（即入睡困难、维持睡眠困难和早醒）。工作压力指标包括工作需求、控制感、紧张程度（工作需求/控制感）和社会支持，通过工作内容问卷进行测量。
失眠患病率为4.7%。在调整年龄、感知到的日常压力、睡眠不满、生活方式因素和身体合并症后，失眠风险随着工作紧张程度的增加而增加（比值比2.3，95%置信区间1.3 - 4.0），随着工作控制感的增加而降低（0.5，0.3 - 0.8）。高工作紧张程度与低控制感或社会支持相结合时，失眠风险比低工作紧张程度与高控制感或支持相结合时高出约三倍。
工作紧张程度和工作控制感对失眠均有独立影响，且工作紧张程度与失眠之间的关联通过控制感和支持的缓冲作用介导。
