Faucett J, Rempel D
AAOHN J. 1996 Jan;44(1):33-9.
The occupational use of video display terminals (VDTs) has been associated with the increasing incidence of upper extremity musculoskeletal disorders, often called cumulative trauma disorders. To guide clinical and policy decisions about the prevention and treatment of these VDT related disorders, valid and economic measures of total daily VDT use and VDT related job tasks such as data entry or editing will be important. In this study of newspaper reporters and copy editors (n = 83), VDT use was measured with employee self reports and by sampling the work behaviors of a subsample of employees. Behavioral sampling estimated VDT use as a characteristic of the job as opposed to a characteristic of individual employee performance. Overall, the two techniques of measuring occupational VDT use compared favorably, with the exception that self reported hours of VDT use tended to exceed the hours of use estimated by behavioral observation for employees who were younger and those who reported greater job demands. The findings suggest that behavioral sampling is a valid technique for estimating VDT use as a job characteristic.
视频显示终端（VDT）的职业性使用与上肢肌肉骨骼疾病发病率的上升有关，这类疾病通常被称为累积性创伤疾病。为指导有关这些与VDT相关疾病的预防和治疗的临床及政策决策，对每日VDT总使用量以及与VDT相关的工作任务（如数据录入或编辑）进行有效且经济的测量将很重要。在这项针对报纸记者和文字编辑（n = 83）的研究中，通过员工自我报告以及对部分员工的工作行为进行抽样来测量VDT的使用情况。行为抽样将VDT的使用情况视为工作的一个特征，而非个别员工绩效的一个特征。总体而言，两种测量职业性VDT使用情况的技术相比效果良好，但存在例外情况：对于较年轻的员工以及那些报告工作要求较高的员工，自我报告的VDT使用时长往往超过行为观察估计的使用时长。研究结果表明，行为抽样是一种用于将VDT使用情况估计为工作特征的有效技术。
