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Quality of Life Research
Gepubliceerd in: Quality of Life Research 2/2014

01-03-2014

Comparative validation of the WOMAC osteoarthritis and Lequesne algofunctional indices in Greek patients with hip or knee osteoarthritis

Auteurs: Georgios A. Konstantinidis, Vassilis H. Aletras, Kleanthi-Akylina Kanakari, Konstantinos Natsis, Nicholas Bellamy, Dimitris Niakas

Gepubliceerd in: Quality of Life Research | Uitgave 2/2014

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Abstract

Purpose

To comparatively evaluate the reliability and validity of the Western Ontario and McMaster (WOMAC) and the Lequesne algofunctional indices in Greek patients with hip or knee osteoarthritis (OA).

Methods

The Greek versions of WOMAC LK 3.1 and Lequesne indices were administered to 97 outpatients with OA. Internal consistency reliability was assessed by Cronbach’s alpha and item–scale correlations. Test–retest reliability was examined with intraclass correlations. Patients were also asked to complete the Short Form 36 (SF-36) and a Visual Analog Scale capturing strength of pain, in order to assess construct validity. Additional demographic and clinical data were also recorded to evaluate further associations.

Results

Cronbach’s alpha values of the WOMAC ranged between 0.92 and 0.98 for hip and 0.89–0.97 for knee OA. The respective values for Lequesne were 0.63–0.74 and 0.74–0.80. Item–scale correlations confirmed the superiority of WOMAC with respect to internal consistency reliability. Intraclass correlations were 0.79–0.97 and 0.57–0.98 for hip and 0.86–0.97 and 0.82–0.97 for knee OA, for WOMAC and Lequesne, respectively. The two indices showed high correlations with comparable subscales of SF-36 and the Visual Analog Scale. Significant relationships were identified for age, body mass index, duration of disease, duration of stiffness and radiographic classification.

Conclusions

Our findings, in samples of knee and hip OA patients, indicate that the WOMAC index demonstrates better internal consistency reliability than the Lequesne counterpart, as well as equivalent test–retest reliability and construct validity.
vorige artikel The Insomnia Severity Index: cross-cultural adaptation and psychometric evaluation of a Persian version
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Metagegevens
Titel
Comparative validation of the WOMAC osteoarthritis and Lequesne algofunctional indices in Greek patients with hip or knee osteoarthritis
Auteurs
Georgios A. Konstantinidis
Vassilis H. Aletras
Kleanthi-Akylina Kanakari
Konstantinos Natsis
Nicholas Bellamy
Dimitris Niakas
Publicatiedatum
01-03-2014
Uitgeverij
Springer International Publishing
Gepubliceerd in
Quality of Life Research / Uitgave 2/2014
Print ISSN: 0962-9343
Elektronisch ISSN: 1573-2649
DOI
https://doi.org/10.1007/s11136-013-0490-x

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