dc.contributor.author |
Garin, Olatz |
dc.contributor.author |
Ayuso-Mateos, Jose Luis |
dc.contributor.author |
Almansa, Josué |
dc.contributor.author |
Nieto, Marta |
dc.contributor.author |
Chatterji, Somnath |
dc.contributor.author |
Vilagut, Gemma |
dc.contributor.author |
Alonso Caballero, Jordi |
dc.contributor.author |
Cieza, Alarcos |
dc.contributor.author |
Svetskova, Olga |
dc.contributor.author |
Burger, Helena |
dc.contributor.author |
Racca, Vittorio |
dc.contributor.author |
Francescutti, Carlo |
dc.contributor.author |
Vieta, Eduard |
dc.contributor.author |
Kostanjsek, Nenad |
dc.contributor.author |
Raggi, Alberto |
dc.contributor.author |
Leonardi, Matilde |
dc.contributor.author |
Ferrer Forés, Maria Montserrat |
dc.contributor.author |
MHADIE Consortium |
dc.date |
2010 |
dc.identifier |
https://ddd.uab.cat/record/113509 |
dc.identifier |
urn:10.1186/1477-7525-8-51 |
dc.identifier |
urn:oai:ddd.uab.cat:113509 |
dc.identifier |
urn:pmid:20482853 |
dc.identifier |
urn:scopus_id:77952314316 |
dc.identifier |
urn:wos_id:000279961900001 |
dc.identifier |
urn:oai:egreta.uab.cat:publications/14dc078b-cf6c-442a-b32c-141d8953a365 |
dc.identifier |
urn:pmc-uid:2893517 |
dc.identifier |
urn:pmcid:PMC2893517 |
dc.identifier |
urn:oai:pubmedcentral.nih.gov:2893517 |
dc.format |
application/pdf |
dc.language |
eng |
dc.publisher |
|
dc.relation |
Health and quality of life outcomes ; Vol. 8, N. 51 (May 2010), p. 1-15 |
dc.rights |
open access |
dc.rights |
Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
dc.rights |
https://creativecommons.org/licenses/by/3.0/ |
dc.title |
Validation of the "World Health Organization Disability Assessment Schedule, WHODAS-2" in patients with chronic diseases |
dc.type |
Article |
dc.description.abstract |
Background: The WHODAS-2 is a disability assessment instrument based on the conceptual framework of the International Classification of Functioning, Disability, and Health (ICF). It provides a global measure of disability and 7 domain-specific scores. The aim of this study was to assess WHODAS-2 conceptual model and metric properties in a set of chronic and prevalent clinical conditions accounting for a wide scope of disability in Europe. Methods: 1,119 patients with one of 13 chronic conditions were recruited in 7 European centres. Participants were clinically evaluated and administered the WHODAS-2 and the SF-36 at baseline, 6 weeks and 3 months of follow-up. The latent structure was explored and confirmed by factor analysis (FA). Reliability was assessed in terms of internal consistency (Cronbach's alpha) and reproducibility (intra-class correlation coefficients, ICC). Construct validity was evaluated by correlating the WHODAS-2 and SF-36 domains, and comparing known groups based on the clinical-severity and work status. Effect size (ES) coefficient was used to assess responsiveness. To assess reproducibility and responsiveness, subsamples of stable (at 6 weeks) and improved (after 3 moths) patients were defined, respectively, according to changes in their clinical-severity. Results: The satisfactory FA goodness of fit indexes confirmed a second order factor structure with 7 dimensions, and a global score for the WHODAS-2. Cronbach's alpha ranged from 0.77 (self care) to 0.98 (life activities: work or school), and the ICC was lower, but achieved the recommended standard of 0.7 for four domains. Correlations between global WHODAS-2 score and the different domains of the SF-36 ranged from -0.29 to -0.65. Most of the WHODAS-2 scores showed statistically significant differences among clinical-severity groups for all pathologies, and between working patients and those not working due to ill health (p < 0.001). Among the subsample of patients who had improved, responsiveness coefficients were small to moderate (ES = 0.3-0.7), but higher than those of the SF-36. Conclusions: The latent structure originally designed by WHODAS-2 developers has been confirmed for the first time, and it has shown good metric properties in clinic and rehabilitation samples. Therefore, considerable support is provided to the WHODAS-2 utilization as an international instrument to measure disability based on the ICF model. |