PROMIS

An initial psychometric evaluation of the German PROMIS v1.2 Physical Function item bank in patients with a wide range of health conditions

**Objectives:** To translate the PROMIS Physical Function (PF) item bank version 1.2 into German and to investigate psychometric properties of resulting full bank and seven derived short forms. **Design:** Cross-sectional psychometric study. …

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 …

Varying the item format improved the range of measurement in patient-reported outcome measures assessing physical function

Language-related Differential Item Functioning between English and German PROMIS Depression Items is negligible

To investigate differential item functioning (DIF) of PROMIS Depression items between US and German samples we compared data from the US PROMIS calibration sample (n = 780), a German general population survey (n = 2,500) and a German clinical sample …