Consistency matters: measurement invariance of the EORTC QLQ-C30 questionnaire in patients with hematologic malignancies.
Kathrin SommerFrancesco CottoneNeil K AaronsonPeter FayersPaola FaziGianantonio RostiEmanuele AngelucciGianluca GaidanoAdriano VendittiMaria Teresa VosoMichele BaccaraniMarco VignettiFabio EfficacePublished in: Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation (2019)
Our findings support measurement invariance of the EORTC QLQ-C30 in a large sample of patients with hematological malignancies. The results showed that the number of non-invariant items was negligible, suggesting that this questionnaire is a valid and robust measurement tool in patients with hematological malignancies, also for comparisons across groups and time.