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WOMAC osteoarthritis index

Roos, Ewa M. LU ; Klässbo, M. and Lohmander, L. S. LU orcid (1999) In Scandinavian Journal of Rheumatology 28(4). p.210-215
Abstract

Objective: To validate the WOMAC Osteoarthritis Index for use in Sweden. Methods: Test-retest reliability, internal consistency, validity, and responsiveness was determined in 52 patients (mean age 48 (20-69)) with arthroscopically assessed cartilage damage of the tibio-femoral knee joint. Results: All WOMAC scales were internally consistent with Cronbach's alpha coefficients of 0.83, 0.87, and 0.96 pre-operatively. Test-retest reliability was satisfactory with intraclass correlation coefficients of 0.74, 0.58, and 0.92. As hypothesized worse post-operative but not preoperative outcomes were associated with radiographic OA. In comparison with the SF-36 the expected correlations were found when comparing items measuring similar and... (More)

Objective: To validate the WOMAC Osteoarthritis Index for use in Sweden. Methods: Test-retest reliability, internal consistency, validity, and responsiveness was determined in 52 patients (mean age 48 (20-69)) with arthroscopically assessed cartilage damage of the tibio-femoral knee joint. Results: All WOMAC scales were internally consistent with Cronbach's alpha coefficients of 0.83, 0.87, and 0.96 pre-operatively. Test-retest reliability was satisfactory with intraclass correlation coefficients of 0.74, 0.58, and 0.92. As hypothesized worse post-operative but not preoperative outcomes were associated with radiographic OA. In comparison with the SF-36 the expected correlations were found when comparing items measuring similar and dissimilar constructs, supporting the concepts of convergent and divergent construct validity. Three months after arthroscopy significant mean improvement was seen in all WOMAC scales (p <0.0004). Conclusion: The Swedish version of WOMAC is a reliable, valid, and responsive instrument with metric properties in agreement with the original widely used version.

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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Arthroscopy, Knee osteoarthritis, Outcome, Sweden, Validation, WOMAC Osteoarthritis Index
in
Scandinavian Journal of Rheumatology
volume
28
issue
4
pages
210 - 215
publisher
Taylor & Francis
external identifiers
  • pmid:10503556
  • scopus:0032830766
ISSN
0300-9742
DOI
10.1080/03009749950155562
language
English
LU publication?
yes
id
ed4a2a4b-8606-4cb7-a8a1-22ec4cdfb38e
date added to LUP
2016-05-05 11:33:25
date last changed
2025-04-20 15:01:23
@article{ed4a2a4b-8606-4cb7-a8a1-22ec4cdfb38e,
  abstract     = {{<p>Objective: To validate the WOMAC Osteoarthritis Index for use in Sweden. Methods: Test-retest reliability, internal consistency, validity, and responsiveness was determined in 52 patients (mean age 48 (20-69)) with arthroscopically assessed cartilage damage of the tibio-femoral knee joint. Results: All WOMAC scales were internally consistent with Cronbach's alpha coefficients of 0.83, 0.87, and 0.96 pre-operatively. Test-retest reliability was satisfactory with intraclass correlation coefficients of 0.74, 0.58, and 0.92. As hypothesized worse post-operative but not preoperative outcomes were associated with radiographic OA. In comparison with the SF-36 the expected correlations were found when comparing items measuring similar and dissimilar constructs, supporting the concepts of convergent and divergent construct validity. Three months after arthroscopy significant mean improvement was seen in all WOMAC scales (p &lt;0.0004). Conclusion: The Swedish version of WOMAC is a reliable, valid, and responsive instrument with metric properties in agreement with the original widely used version.</p>}},
  author       = {{Roos, Ewa M. and Klässbo, M. and Lohmander, L. S.}},
  issn         = {{0300-9742}},
  keywords     = {{Arthroscopy; Knee osteoarthritis; Outcome; Sweden; Validation; WOMAC Osteoarthritis Index}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{210--215}},
  publisher    = {{Taylor & Francis}},
  series       = {{Scandinavian Journal of Rheumatology}},
  title        = {{WOMAC osteoarthritis index}},
  url          = {{http://dx.doi.org/10.1080/03009749950155562}},
  doi          = {{10.1080/03009749950155562}},
  volume       = {{28}},
  year         = {{1999}},
}