Division of Occupational and Environmental Health, College of Public Health, Nantong University, Nantong, Jiangsu, China; Division of Occupational and Environmental Health, College of Public Health, Xinjiang Medical University, Urumqi, Xinjiang, China.
Division of Occupational and Environmental Health, College of Public Health, Nantong University, Nantong, Jiangsu, China.
J Psychosom Res. 2015 Jan;78(1):45-51. doi: 10.1016/j.jpsychores.2014.09.009. Epub 2014 Sep 28.
The aim of this study was to examine the independent and joint effect of insomnia and objective sleep duration on poor work ability.
In this cross-sectional study, a total of 2820 Chinese manufacturing workers were categorized as insomnia patients and individuals with normal sleeping pattern by interview according to DSM-IV criteria. Sleep duration was classified into four categories: ≥7h, 6-7h, 5-6h, and <5h according to objective sleep duration of Watch-PAT-200 test. Work ability was assessed using the Chinese Work Ability Index (WAI) questionnaire. Regression analysis examined the independent and joint association of sleep duration and insomnia with poor work ability, after adjusting for various confounding factors.
Insomnia and objective short sleep duration were both independently associated with poor work ability. Compared with the normal sleeping and ≥7h sleep duration group, the highest risk of poor work ability was in the insomnia patients with <5h sleep duration [odds ratio (OR) 3.43, 95% confidence interval (CI) 1.87-5.23], followed by the individuals with insomnia who slept 5-6h (OR 2.03, 95% CI 1.42-2.67).
Insomnia and sleep duration in workers are both separately and together associated with increased risk of poor work ability. Objective sleep duration should be taken into consideration when assessing the work ability of people with insomnia.
本研究旨在探讨失眠和客观睡眠时间对工作能力不佳的独立和联合影响。
在这项横断面研究中，根据 DSM-IV 标准，通过访谈将 2820 名中国制造业工人分为失眠患者和正常睡眠模式个体。根据 Watch-PAT-200 测试的客观睡眠时长，将睡眠时长分为四组：≥7h、6-7h、5-6h 和<5h。使用中国工作能力指数（WAI）问卷评估工作能力。在调整了各种混杂因素后，回归分析检查了睡眠时间和失眠与工作能力不佳的独立和联合关联。
失眠和客观的短睡眠时间均与工作能力不佳独立相关。与正常睡眠和≥7h 睡眠时长组相比，睡眠时间<5h 的失眠患者工作能力不佳的风险最高（比值比[OR]3.43，95%置信区间[CI]1.87-5.23），其次是睡眠时间为 5-6h 的失眠患者（OR 2.03，95% CI 1.42-2.67）。
工人的失眠和睡眠时间均分别和共同与工作能力不佳的风险增加相关。在评估失眠患者的工作能力时，应考虑客观睡眠时长。
