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Initial evaluation of measurement properties of the Work Environment Impact Questionnaire (WEIQ) - using Rasch
Elin Ekbladh1, Moa Yngve2,3, Jeanette Melin4
1Department of Health, Medicine and Caring Sciences, Linköping University, Norrköping, 601 74, Sweden. elin.ekbladh@liu.se.
Health and Quality of Life Outcomes
|May 30, 2024
Summary
The Work Environment Impact Questionnaire (WEIQ) shows initial promise for assessing employee work ability. Further validation is needed to address specific measurement properties for broader workplace application.
Area of Science:
- Occupational health psychology
- Psychometrics
- Workplace well-being research
Background:
- Understanding employee work demands is crucial for workplace prevention and rehabilitation.
- Valid questionnaires are essential for accurately measuring employee experiences.
- The Work Environment Impact Questionnaire (WEIQ) measures self-perceived work ability relative to the work environment.
Purpose of the Study:
- To evaluate the construct validity of the WEIQ.
- To assess the measurement properties of the WEIQ using Rasch Measurement Theory (RMT).
Main Methods:
- A cross-sectional survey of 288 employees from assisted living, vocational rehabilitation, and research institute settings.
- Rasch Measurement Theory (RMT) was applied to analyze item fit, threshold ordering, item correlations, unidimensionality, and reliability.
- Key RMT analyses included item fit statistics, local dependence (LD), differential item functioning (DIF), and person fit residuals.
Main Results:
- Most WEIQ item fit statistics and threshold ordering were satisfactory.
- Issues identified included local dependence (7.6%), differential item functioning (4 items), and unidimensionality concerns (t-test criterion not met).
- Scale-to-sample targeting and initial reliability (0.92) were good; however, addressing LD issues impacted reliability (0.82).
Conclusions:
- The WEIQ demonstrates initial validity for assessing employees' self-perceived work ability.
- Further research with larger samples and diverse settings is recommended to explore LD, DIF, and unidimensionality.
- Refinements may be necessary to enhance the WEIQ's psychometric properties for comprehensive workplace assessments.
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