Cross‐cultural adaptation and validation of the KOOS, JR questionnaire for assessing knee osteoarthritis in Spanish‐speaking patients
Journal
Knee Surgery, Sports Traumatology, Arthroscopy
ISSN
0942-2056
1433-7347
Date Issued
2023
Author(s)
Rodrigo Guiloff
Magaly Iñiguez
Tomás Prado
Nicolás Olavarría
Eduardo Carrasco
Enrique Ergas
Martín Salgado
Stephen Lyman
Type
Resource Types::text::journal::journal article
URL Institutional Repository
Abstract
<jats:title>Abstract</jats:title><jats:sec><jats:title>Purpose</jats:title><jats:p>The present study aims to translate, adapt and validate a Spanish version of the Knee Injury and Osteoarthritis Outcome Score, Joint Replacement (KOOS, JR), including a reliability and validity analysis in patients with knee osteoarthritis (OA).</jats:p></jats:sec><jats:sec><jats:title>Methods</jats:title><jats:p>This study conducted a prospective validation study following the six stages of the “Guidelines for the Process of Cross‐Cultural Adaptation of Self‐Report Measures”. Psychometric testing was conducted in patients with knee osteoarthritis. Subjects answered the Spanish KOOS, JR (S‐KOOS, JR) and a validated Spanish Oxford Knee Score (S‐OKS). Retest was conducted at 10 days. Acceptability, floor and ceiling effect, internal consistency (Cronbach’s α), reproducibility (mixed‐effect model coefficient [MEMC]) and construct validity (Spearman’s correlation; <jats:italic>p</jats:italic> = 0.05) were assessed.</jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p>Forty‐one patients (mean age: 65.6 ± 5.39; 48.8% female) participated in the study. All patients (100%) answered both scores during the first assessment and 38 (92.7%) during the second assessment. All patient‐reported outcomes measures were answered completely (100%). The S‐KOOS, JR resulted in 100% acceptability when answered. There were no ceiling or floor effects detected. The Cronbach’s α for the S‐KOOS, JR was 0.927 and its MEMC was 0.852 (CI 95% 0.636–1.078). The Spearman’s correlation between the S‐KOOS, JR and the S‐OKS was 0.711 (CI 0.345–0.608; <jats:italic>p</jats:italic> < 0.001) and 0.870 (CI 0.444–0.651; <jats:italic>p</jats:italic> < 0.001) for the first and second assessments, respectively.</jats:p></jats:sec><jats:sec><jats:title>Conclusion</jats:title><jats:p>The S‐KOOS, JR has very high internal consistency and reproducibility, with a high correlation with the S‐OKS; it is a reliable and valid instrument for characterising Spanish‐speaking patients suffering from knee OA.</jats:p></jats:sec><jats:sec><jats:title>Level of evidence</jats:title><jats:p>IV.</jats:p></jats:sec>
Subjects
adaptation
;
knee osteoarthritis
;
knee replacement
;
koos
;
koos
;
jr
;
patient-reported outcome measure
;
spanish
;
validation
;
aged
;
arthroplasty, replacement
;
cross-cultural comparison
;
female
;
humans
;
male
;
middle aged
;
osteoarthritis, knee
;
psychometrics
;
quality of life
;
reproducibility of results
;
surveys and questionnaires
;
aged
;
cultural factor
;
female
;
human
;
knee osteoarthritis
;
male
;
middle aged
;
psychometry
;
quality of life
;
questionnaire
;
replacement arthroplasty
;
reproducibility