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Measurement properties of the German version of the IKDC subjective knee form (IKDC-SKF)
- Source :
- Journal of Patient-Reported Outcomes, Vol 2, Iss 1, Pp 1-8 (2018)
- Publication Year :
- 2018
- Publisher :
- SpringerOpen, 2018.
-
Abstract
- Abstract Purpose To examine the measurement properties of the German International Knee Documentation Committee Subjective Knee Form (IKDC-SKF) in knee disorder patients. Methods Three hundred twelve consecutive patients undergoing surgery for anterior cruciate ligament, meniscus and/or cartilage injuries completed the IKDC-SKF, Lysholm Score, Tegner Activity Scale, and Short Form-12 Health Survey before and 6 months post-surgery. IKDC-SKF measurement properties were calculated and patients were also asked to rate the relevance/comprehensibility of the questionnaire items. Results Reliability was good with high Cronbach’s alpha and intraclass correlation coefficients, and standard error of measurement values of 4.4 to 6.0. The smallest detectable change (SDC) ranged from 12.3 to 16.7 points. Validity was good with 90% of all hypotheses confirmed. Confirmatory factor analysis did not show adequate fitting indices within the model. Over half of the items were rated as essential, and all were well comprehended. The majority of hypotheses for responsiveness were confirmed. No floor and ceiling effects were observed. The area under the curve ranged from 0.82 to 0.89 and the minimal important difference was smaller than the SDC. Conclusions The German IKDC-SKF is a reliable outcome measure with good hypotheses testing and responsiveness, but its MIC and structural/content validity need further analysis.
- Subjects :
- IKDC
PROM
Validity
Reliability
Responsiveness
Public aspects of medicine
RA1-1270
Subjects
Details
- Language :
- English
- ISSN :
- 25098020
- Volume :
- 2
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- Journal of Patient-Reported Outcomes
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.3713b62202f84bc5a19a766738dee88f
- Document Type :
- article
- Full Text :
- https://doi.org/10.1186/s41687-018-0058-1