Ascertaining computer use in studies of musculoskeletal outcomes among computer workers: differences between self-report and computer registration software.

摘要

The results of a large prospective study of computer users show little association between input device use and musculo-skeletal outcomes. Ordinarily, this study would simply be one more addition to the already large body of literature examining associations between computer use and musculoskeletal outcomes and one more citation included in the 'negative association' column of review papers. This is not an ordinary study, however. Unique to this investigation was its use of newly developed memory resident computer registration software that allows for the automated collection of computer and mouse activity over months or years. Using data collected with this software, IJmker et al observed no association between computer and mouse use and severe distal upper extremity or neck-shoulder symptoms. Even more provocative was the simultaneous observation by IJmker et at (see page 502) that self-reported daily duration of computer use was significantly associated with distal upper extremity and neck-shoulder symptoms. With over one billion computers in use worldwide, the health effects of computer work continue to be relevant to occupational health practice.