| Description |
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Objective: To develop a system to guide interpretation of scores generated from 2 new instruments measuring workrelated physical and behavioral health functioning (Work Disability - Physical Function (WD-PF) and WD - Behavioral Function (WD-BH)) Design: Cross-sectional, secondary data from 3 independent samples to develop and validate the functional levels for physical and behavioral health ... read morefunctioning. Subjects: Physical group: 999 general adult subjects, 1,017 disability applicants and 497 work-disabled subjects. Behavioral health group: 1,000 general adult subjects, 1,015 disability applicants and 476 work-disabled subjects. Methods: Three-phase analytic approach including item mapping, a modified-Delphi technique, and known-groups validation analysis were used to develop and validate cut-points for functional levels within each of the WD-PF and WD-BH instrument's scales. Results: Four and 5 functional levels were developed for each of the scales in the WD-PF and WD-BH instruments. Distribution of the comparative samples was in the expected direction: the general adult samples consistently demonstrated scores at higher functional levels compared with the claimant and work-disabled samples. Conclusion: Using an item-response theory-based methodology paired with a qualitative process appears to be a feasible and valid approach for translating the WD-BH and WD-PF scores into meaningful levels useful for interpreting a person's work-related physical and behavioral health functioning.read less
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| Citation |
- Marfeo, E, P Ni, L Chan, E Rasch, C McDonough, D Brandt, K Bogusz, and A Jette. "Interpreting Physical and Behavioral Health Scores from New Work Disability Instruments." Journal of Rehabilitation Medicine 47, no. 5 (2015): 394-402. doi:10.2340/16501977-1947.
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