Validity, reliability and responsiveness of the Turkish Version of the Munich Knee Questionnaire

Abstract

Purpose

Self-reported surveys are an important part of a comprehensive assessment of clinical outcome. This cross-cultural adaptation study aimed to develop a Turkish version of the Munich Knee Questionnaire (MKQ-TR).

Methods

A total of 200 participants including 112 people with various knee injuries (53.9±14.3 years, 68 males) and 88 healthy participants (30.0±11.9 years, 74 males) were recruited. We analyzed criterion validity with Pearson’s correlation coefficients and test-retest reliability with intraclass correlations coefficient (ICC). Standard error of measurement (SEM) and minimal detectable change (MDC) were investigated for absolute reliability.

Results

There were strong correlations between MKQ-TR and International Knee Documentation Committee (r=− 0.96, p<0.001) and Knee Injury and Osteoarthritis Outcome Score subscales (range for r=− 0.66 to − 0.96, all p<0.001). Reliability was excellent (ICC>0.90). The SEM results showed that absolute reliability ranged from good to doubtful (5.8–15.9%), hence acceptable. The MKQ-TR had an MDC of 6.14 and 29.7 as the cut-off point. The area under the ROC curve showed excellent (0.991) accuracy with 0.973 sensitivity and 0.977 specificity.

Conclusion

MKQ-TR demonstrated excellent validity, reliability and accuracy to evaluate symptoms, pain, daily life activities, sports activities, physical function and quality of life in people with various knee injuries.

Zusammenfassung

Ziel der Studie

Selbstberichtserhebungen sind ein wichtiger Bestandteil einer umfassenden Bewertung der klinischen Ergebnisse. Ziel dieser kulturübergreifenden Anpassungsstudie war die Entwicklung einer Türkischen Version des Munich Knee Questionnaire (MKQ-TR).

Methodik

Insgesamt wurden 200 Teilnehmer rekrutiert, darunter 112 Personen mit verschiedenen Knieverletzungen (53,9±14,3 Jahre, 68 Männer) und 88 gesunde Teilnehmer (30,0±11,9 Jahre, 74 Männer). Wir analysierten die Kriteriumsvalidität mit Pearson-Korrelationskoeffizienten und die Test-Retest-Zuverlässigkeit mit dem Intraclass-Korrelationskoeffizienten (ICC). Für die absolute Zuverlässigkeit wurden der Standardmessfehler (SEM) und die minimal nachweisbare Veränderung (MDC) untersucht.

Ergebnisse

Es gab starke Korrelationen zwischen dem MKQ-TR und dem International Knee Documentation Committee (r=− 0,96, p<0,001) sowie den Subskalen des Knee Injury and Osteoarthritis Outcome Score (Bereich für r=− 0,66 bis − 0,96, alle p<0,001). Die Reliabilität war ausgezeichnet (ICC>0,90) und die interne Konsistenz für jede Subskala war hoch (α=0,98–0,99). Die SEM-Ergebnisse zeigten, dass die absolute Reliabilität im Bereich von gut bis zweifelhaft (5,8–15,9%) und damit akzeptabel war. Der MKQ-TR hatte einen MDC von 6,14 und 29,7 als Cut-off-Punkt. Die Fläche unter der ROC-Kurve zeigte eine ausgezeichnete (0,991) Genauigkeit mit einer Sensitivität von 0,973 und einer Spezifität von 0,977.

Schlussfolgerung

Der MKQ-TR hat eine ausgezeichnete Validität, Zuverlässigkeit und Genauigkeit bei der Bewertung von Symptomen, Schmerzen, Aktivitäten des täglichen Lebens, sportlichen Aktivitäten, körperlicher Funktion und Lebensqualität bei Menschen mit verschiedenen Knieverletzungen gezeigt.

Keywords

Validity - reliability - responsiveness - knee - cross-cultural adaptation - patient reported outcome measure

Schlüsselwörter

Gültigkeit - Zuverlässigkeit - Knie - kulturübergreifende Anpassung - Messung der von Patienten berichteten Ergebnisse - Änderungssensitivität

Publication History

Article published online:
16 June 2025

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