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Exposure to keyboard/mouse use = keystrokes + mouse clicks + POSTURE: a missing variable that cannot be overstated
  1. Margit L Bleecker,
  2. Sheryl K Barnes
  1. Center for Occupational and Environmental Neurology, Baltimore, Maryland, USA
  1. Correspondence to Dr Margit L Bleecker, Center for Occupational and Environmental Neurology, 2 Hamill Road, Suite 225, Baltimore, MD 21210-1815, USA; coen{at}msn.com

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Self-reported duration of computer use is usually overestimated. The search for a valid measure of exposure to keyboard/mouse use resulted in the development of a computer registration software. The use of this new software generated unexpected results when IJmker et al1 found software-recorded computer use was not significantly associated with upper extremity/neck symptom onset while self-reported computer use was significantly associated with symptoms in the neck/shoulder and arm/hand. What is captured …

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