Construct validity and test-retest reliability of the revised Upper Extremity Work Demands (UEWD-R) Scale.

Background: The revised Upper Extremity Work Demand (UEWD-R) Scale is a six-item self-report questionnaire to measure the workload of the upper limbs. UEWD-R consists of a force/posture scale and a repetition scale. Psychometric properties are unknown so far.