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The German version of the Juvenile Arthritis Multidimensional Assessment Report (JAMAR)
Dirk Holzinger1,2, Dirk Foell3, Gerd Horneff4,5
1Klinik für Pädiatrische Rheumatologie und Immunologie, Universitätsklinikum Münster, Albert-Schweitzer-Campus 1, Gebäude W30, 48149, Münster, Germany.
The German Juvenile Arthritis Multidimensional Assessment Report (JAMAR) is validated for assessing juvenile idiopathic arthritis (JIA) in children. This parent/patient-reported outcome measure shows good psychometric performance for clinical research and practice.
Area of Science:
- Pediatrics
- Rheumatology
- Psychometrics
Background:
- Juvenile idiopathic arthritis (JIA) requires reliable assessment tools.
- The Juvenile Arthritis Multidimensional Assessment Report (JAMAR) is a novel parent/patient-reported outcome measure.
- Cross-cultural adaptation is crucial for global applicability.
Purpose of the Study:
- To perform the cross-cultural adaptation and validation of the German parent and patient versions of the JAMAR.
- To assess the psychometric properties of the German JAMAR in children with JIA.
Main Methods:
- German JAMAR underwent reading comprehension testing.
- Data from 319 JIA patients and 100 healthy children were collected across eight centers.
- Statistical validation included psychometric analyses (Likert assumptions, reliability, validity).
Main Results:
- The German JAMAR demonstrated good reading comprehension.
- The JAMAR effectively discriminated between JIA patients and healthy children.
- All components showed favorable psychometric performance, including internal consistency and reliability.
Conclusions:
- The German version of the JAMAR is a valid and reliable tool for assessing JIA in children.
- The JAMAR is suitable for both clinical practice and research settings in German-speaking populations.
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