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Construct validity and test-retest reliability of the revised Upper Extremity Work Demands (UEWD-R) Scale
Miriam A Cavalini1, Redmar J Berduszek1, Corry K van der Sluis1
1Department of Rehabilitation Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Occupational and Environmental Medicine
|July 10, 2017
Summary
The revised Upper Extremity Work Demand (UEWD-R) Scale demonstrates good construct validity and test-retest reliability for assessing upper limb workload. This validated tool can aid in evaluating occupational demands on the upper extremities.
Area of Science:
- Occupational Health
- Ergonomics
- Psychometrics
Background:
- The revised Upper Extremity Work Demand (UEWD-R) Scale is a self-report tool designed to measure upper limb workload.
- It comprises force/posture and repetition scales, with prior unknown psychometric properties.
Purpose of the Study:
- To evaluate the construct validity of the UEWD-R scale.
- To determine the test-retest reliability of the UEWD-R scale.
Main Methods:
- Construct validity was assessed by testing 11 hypotheses correlating UEWD-R with other measures, including workplace observations using the Rapid Upper Limb Assessment (RULA).
- Test-retest reliability was evaluated using the intraclass correlation coefficient (ICC), and the smallest detectable change (SDC) was calculated.
Main Results:
- Eighty-two percent (9/11) of predefined hypotheses for construct validity were confirmed.
- Good test-retest reliability was found (ICC agreement = 0.79), with an SDC of 4.85.
- Some expected correlations between UEWD-R and RULA sub-scales were not confirmed.
Conclusions:
- The UEWD-R scale exhibits good construct validity and test-retest reliability.
- The UEWD-R scale is suitable for evaluating upper extremity workload in occupational settings.
- Further research is recommended to validate UEWD-R against additional observational measures beyond RULA.
