Article

Purpose: To assess internal consistency and construct validity of the French
version of the Revised Illness Perception Questionnaire adapted for Work
Disability (IPQR-WD). Method: A cross sectional study was conducted in
rehabilitation centers and private clinics in the Montreal region of Canada,
involving 43 men and women, French speaking, absent from work between 3 months
and a year due to musculoskeletal disorders. The 9 dimension IPQR-WD and the
following eight-related instruments for construct validity were administered:
Tampa Scale for Kinesiophobia (TSK), Pain Catastrophizing Scale (PCS),
Psychological Distress Index (PDI-14), Pain Disability Index (PDI), Self-Efficacy
for Return to Work Scale (SERWS), Pain Beliefs and Perceptions Inventory (PBPI),
Implicit Models of Illness Questionnaire (IMIQ) and a Visual Analog Scale for
pain intensity (VAS). Results: Calculations of Cronbach's alpha (from 0.58 to
0.87) revealed satisfactory internal consistency of the IPQR-WD dimensions.
Multiple regression analyses were performed with each IPQR-WD dimension and
significant independent variables. Final models explained a good proportion of
the variance (adjusted r(2) = 0.33-0.70) for each dimension, except for the
Cyclical timeline dimension for which associations became non-significant after
adjusting for gender, age and length of sick leave. The SERWS and the VAS were
not significantly associated to any of the IPQR-WD dimensions. Conclusions:
Moderate to strong correlations were found with six-related instruments which
support the multidimensional nature of the IPQR-WD and its unique contribution as
one simple questionnaire that can assess representations related to work
disability. [Box: see text].

Langue : ANGLAIS