Article

OBJECTIVE: To assess the feasibility and psychometric properties of 8 scales
covering 2 domains of the newly developed Work Disability Functional Assessment
Battery (WD-FAB): physical function (PF) and behavioral health (BH) function.
DESIGN: Cross-sectional study. SETTING: Community. PARTICIPANTS: Adults (N=973)
unable to work because of a physical (n=497) or a mental
(n=476) disability.
INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Each disability group
responded to a survey consisting of the relevant WD-FAB scales and existing
measures of established validity. The WD-FAB scales were evaluated with regard to
data quality (score distribution, percentage of "I don't know" responses),
efficiency of administration (number of items required to achieve reliability
criterion, time required to complete the scale) by computerized adaptive testing
(CAT), and measurement accuracy as tested by person fit. Construct validity was
assessed by examining both convergent and discriminant correlations between the
WD-FAB scales and scores on same-domain and cross-domain established measures.
RESULTS: Data quality was good, and CAT efficiency was high across both WD-FAB
domains. Measurement accuracy was very good for PF scales; BH scales demonstrated
more variability. Construct validity correlations, both convergent and divergent,
between all WD-FAB scales and established measures were in the expected direction
and range of magnitude. CONCLUSIONS: The data quality, CAT efficiency, person
fit, and construct validity of the WD-FAB scales were well supported and suggest
that the WD-FAB could be used to assess PF and BH function related to work
disability. Variation in scale performance suggests the need for future work on
item replenishment and refinement, particularly with regard to the Self-Efficacy
scale.
CI - Copyright (c) 2015 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS