Reference Values

Normative data for the EORTC QLQ-C30 from the Austrian general population

Updated EORTC QLQ-C30 general population norm data for Germany

Establishing the European Norm for the health-related quality of life domains of the computer-adaptive test EORTC CAT Core

General population normative data for the EORTC QLQ-C30 health-related quality of life questionnaire based on 15,386 persons across 13 European countries, Canada and the Unites States

Measurement invariance and general population reference values of the PROMIS Profile 29 in the UK, France and Germany

**Purpose:** Comparability of patient-reported outcome measures over different languages is essential to allow cross-national research. We investigate the comparability of the PROMIS Profile 29, a generic health-related quality of life measure, in …