The EORTC computer-adaptive tests measuring physical functioning and fatigue exhibited high levels of measurement precision and efficiency.
Fiche publication
Date publication
mars 2013
Auteurs
Membres identifiés du Cancéropôle Est :
Pr CONROY Thierry
Tous les auteurs :
Petersen MA, Aaronson NK, Arraras JI, Chie WC, Conroy T, Costantini A, Giesinger JM, Holzner B, King MT, Singer S, Velikova G, Verdonck-de Leeuw IM, Young T, Groenvold M
Lien Pubmed
Résumé
OBJECTIVES: The European Organisation for Research and Treatment of Cancer (EORTC) Quality of Life Group is developing a computer-adaptive test (CAT) version of the EORTC Quality of Life Questionnaire (QLQ-C30). We evaluated the measurement properties of the CAT versions of physical functioning (PF) and fatigue (FA) and compared these with the corresponding QLQ-C30 scales. STUDY DESIGN AND SETTING: Based on international samples of more than 1,000 cancer patients, we simulated CAT administration of varying numbers of items and compared the resulting scores with those based on all items in the respective item pools. Furthermore, the relative validity (RV) of CATs was compared with that of the QLQ-C30 scales using known groups validity. RESULTS: For both dimensions, CATs of all lengths resulted in unbiased score estimates. CATs consisting of five or more items had reliability>0.90, correlated >/= 0.97 with the full scale, and had root mean square error
Référence
J Clin Epidemiol. 2013 Mar;66(3):330-9