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Construct validity of a kinesiophysical functional capacity evaluation administered within a worker's compensation
Douglas P Gross1, Michele C Battié
1Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Alberta, Canada. dgross@ualberta.ca
Journal of Occupational Rehabilitation
|December 16, 2003
Summary
This study validated the functional capacity evaluation (FCE) for worker's compensation. The FCE showed moderate construct validity, but was also related to pain levels, challenging its independence from pain severity.
Area of Science:
- Occupational Health
- Rehabilitation Medicine
- Pain Management
Background:
- Functional Capacity Evaluations (FCEs) are crucial in worker's compensation for assessing an individual's ability to perform job-related tasks.
- The construct validity of kinesiophysical FCEs, particularly their relationship with pain and disability measures, requires thorough examination within this context.
Purpose of the Study:
- To examine the construct validity of a kinesiophysical Functional Capacity Evaluation (FCE) in a worker's compensation population.
- To investigate the relationships between FCE performance, pain disability, and pain intensity.
Main Methods:
- A cross-sectional study design was utilized, analyzing data from 321 worker's compensation claimants with chronic, medically stable low back pain.
- Data included clinical and demographic information, Isernhagen Work Systems' FCE results, the Pain Disability Index (PDI), and a pain visual analogue scale (VAS).
- A multitrait Pearson correlation matrix was employed to analyze the relationships between these variables.
Main Results:
- FCE performance demonstrated moderate correlations with the Pain Disability Index (PDI) (r = -0.44 to -0.52) and pain VAS (r = 0.34 to 0.45).
- Pain intensity showed a high correlation with the PDI (r = 0.79).
- The findings indicate a moderate relationship between FCE performance and the PDI, supporting the FCE's construct validity as a functional measure.
Conclusions:
- The kinesiophysical FCE exhibits moderate construct validity as a functional assessment tool within the worker's compensation setting.
- Contrary to assumptions, FCE performance was not entirely independent of pain severity, suggesting a nuanced interpretation of results is necessary.