The National Research Centre for the Working Environment, Copenhagen, Denmark.
Appl Ergon. 2011 Jan;42(2):238-43. doi: 10.1016/j.apergo.2010.06.011. Epub 2010 Aug 21.
The aim of the present intervention study was to examine if increased influence on working hours among shift workers led to better sleep quality. 391 employees were categorized into groups based on the performed activities: High (self-rostering), moderate (education and/or policy for working hours), and low intensity intervention (meetings and discussions) and reference. Sleep quality was assessed by Karolinska Sleep Questionnaire (KSQ) at baseline and follow-up (12 months). To elucidate the process of the intervention interviews were conducted. Influence on one's own working hours increased only in the high intensity group (p < 0.001). No effects of interventions on sleep quality were observed. Thus, sleep quality was not improved by increasing work time influence in the present group of Danish elder care workers. This was partly due to program failure (failed intervention), but may also be due to other factors such as few participants working night and few working full time.
本干预研究的目的是检验轮班工人工作时间影响力的增加是否会导致更好的睡眠质量。391 名员工根据所从事的活动分为三组：高强度干预（自我安排工作时间）、中强度干预（教育和/或工作时间政策）和低强度干预（会议和讨论）以及参照组。睡眠质量通过 Karolinska 睡眠问卷（KSQ）在基线和随访（12 个月）时进行评估。为了阐明干预的过程，进行了访谈。只有在高强度干预组中，对自己工作时间的影响力才会增加（p < 0.001）。干预对睡眠质量没有影响。因此，在本丹麦老年护理工人组中，增加工作时间的影响力并没有改善睡眠质量。这部分是由于计划失败（干预失败），但也可能是由于其他因素，如很少有员工上夜班和很少有员工全职工作。
