The Work Instability Scale for Rheumatoid Arthritis (RA-WIS): Does it work in osteoarthritis?
Purpose: To validate the 23-item Work Instability Scale for Rheumatoid Arthritis (RA-WIS) for use in osteoarthritis (OA) using both classical test theory and item response theory approaches.Methods: Baseline and 12-month follow-up data were collected from workers with OA recruited from community and...
| Publicado en: | Quality of Life Research Vol. 19; no. 7; pp. 1057 - 1069 |
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| Autores principales: | , , , , , , , , , , , , , |
| Formato: | research Journal Article |
| Publicado: |
Springer Nature
Sep2010
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=104916503&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 104916503 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09629343 GPQ jtl: Quality of Life Research issn: 09629343 maglogo: N pubinfo: dt: Sep2010 vid: 19 iid: 7 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 104916503 NLM20419502 2010753034 10.1007/s11136-010-9656-y NLM20419502 104916503 ppf: 1057 ppct: 12 formats: fmt: @attributes: type: P tig: atl: The Work Instability Scale for Rheumatoid Arthritis (RA-WIS): Does it work in osteoarthritis? aug: au: Tang K Beaton DE Lacaille D Gignac MA Zhang W Anis AH Bombardier C Tang, Kenneth Beaton, Dorcas E Lacaille, Diane Gignac, Monique A M Zhang, Wei Anis, Aslam H Bombardier, Claire affil: Mobility Program Clinical Research Unit, St. Michael's Hospital, 30 Bond Street, Toronto, ON, M5B 1W8, Canada sug: subj: Arthritis, Rheumatoid Disability Evaluation Osteoarthritis Female Human Male Middle Age Psychometrics Middle Aged: 45-64 years Female Male ab: Purpose: To validate the 23-item Work Instability Scale for Rheumatoid Arthritis (RA-WIS) for use in osteoarthritis (OA) using both classical test theory and item response theory approaches.Methods: Baseline and 12-month follow-up data were collected from workers with OA recruited from community and clinical settings (n = 130). Fit of RA-WIS data to the Rasch model was evaluated by item- and person-fit statistics (size of residual, chi-sq), assessments of differential item functioning, and tests of unidimensionality and local independence. Internal consistency was assessed by KR-20. Convergent construct validity (Spearman r, known-groups) was evaluated against theoretical constructs that assess impact of health on work. Responsiveness to global indicators of change was assessed by standardized response means (SRM) and area under the receiver operating characteristic curves.Results: Data structure of the RA-WIS showed adequate fit to the Rasch model (chi-sq = 83.2, P = 0.03) after addressing local dependency in three item pairs by creating testlets. High internal consistency (KR-20 = 0.93) and convergent validity with work-oriented constructs (|r| = 0.55-0.77) were evident. The RA-WIS correlated most strongly with the concept of illness intrusiveness (r = 0.77) and was highly responsive to changes (SRM = 1.05 [deterioration]; -0.78 [improvement]).Conclusions: Although developed for RA, the RA-WIS is psychometrically sound for OA and demonstrates interval-level property. pubtype: Academic Journal doctype: research Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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