Amsterdam UMC, University of Amsterdam, Coronel Institute of Occupational Health, Amsterdam Public Health research institute, Meibergdreef 9, PO Box 22660, 1100, DE, Amsterdam, the Netherlands.
BMC Musculoskelet Disord. 2020 Jun 18;21(1):389. doi: 10.1186/s12891-020-03387-y.
The aim of this study was to assess the relationship between self-reported work ability and hours worked at the current time in Upper Extremity Musculoskeletal Disorders (UEMSD) patients. To further investigate this relationship, the association of work ability and working hours with several limitations in daily and working life were explored.
In this cross-sectional cohort study, a questionnaire was sent out to members of the UEMSD patient organisation, containing self-reported work ability, questions on working hours and limitations in work due to UEMSD. Limitations were measured with the Disabilities of Arm Shoulder and Hand questionnaire, ShortForm-36 subscales, and common hand grasps or grips. Work ability was measured with the work ability score, while worked hours were operationalised as the percentage of hours worked compared to fulltime. The correlation between worked hours and work ability was tested with the Pearson correlation coefficient. Variance in work ability and the hours worked were explained by limitations and assessed with two linear regression analyses.
Based on data of 794 respondents a moderate correlation was found between work ability and worked hours r = 0.46; 95% CI [0.40, 0.53]. Models including limitations explained 52 and 21% of total variance in work ability and worked hours, respectively. Variance in both can be explained by the degree of difficulties performing daily activities at work, limitations in daily activities as a consequence of health issues and the ability to perform a precision grip. Additionally, work ability can be explained by limitations at work and other daily activities due to physical health issues, while the percentage of hours can additionally be explained by the ability to grasp a large object with one hand, the ability to use a keyboard, and the subject's gender.
The number of worked hours does not fully match the work ability. Although they share three predictors, work ability and worked hours seem to be based on different aspects. Compared to work hours, work ability is more strongly related to limitations in daily activities and work. Taking self-reported work ability into account can improve the fit between work limitations and work hours.
本研究旨在评估上肢肌肉骨骼疾病（UEMSD）患者当前工作能力自评与工作时间之间的关系。为了进一步研究这种关系，我们探讨了工作能力和工作时间与日常和工作生活中几种限制的关系。
在这项横断面队列研究中，我们向 UEMSD 患者组织的成员发送了一份问卷，其中包括自我报告的工作能力、工作时间问题以及由于 UEMSD 导致的工作限制。限制通过手臂、肩膀和手残疾问卷、ShortForm-36 子量表以及常见的手抓握或握持来衡量。工作能力通过工作能力评分来衡量，而工作时间则通过与全职工作相比的工作时间百分比来操作化。使用 Pearson 相关系数测试工作时间与工作能力之间的相关性。使用两个线性回归分析来解释工作能力和工作时间的方差。
基于 794 名受访者的数据，发现工作能力与工作时间之间存在中度相关性 r=0.46；95%CI[0.40, 0.53]。包括限制在内的模型分别解释了工作能力和工作时间总方差的 52%和 21%。这两者的方差都可以通过在工作中完成日常活动的难度程度、健康问题导致的日常活动限制以及执行精确握力的能力来解释。此外，工作能力可以通过工作和其他因身体健康问题导致的日常活动限制来解释，而工作时间百分比可以通过单手抓握大物体的能力、使用键盘的能力以及受测者的性别来进一步解释。
工作时间的数量与工作能力不完全匹配。尽管它们有三个共同的预测因子，但工作能力和工作时间似乎基于不同的方面。与工作时间相比，工作能力与日常生活和工作中的限制更密切相关。考虑到自我报告的工作能力可以提高工作限制与工作时间的匹配度。
