Psychometric properties of the PROMIS-57 questionnaire, Norwegian version

• DOI: 10.1007/s11136-021-02906-1
• Publication Date: 2021-06-18T15:02:46Z
• Authors: Stein Arne Rimehaug; Aaron J. Kaat; Jan Egil Nordvik; Mari Klokkerud; Hilde Stendal Rob...
• Keywords: Differential item functioning; Norwegian; Discriminant validity

The aims of this cross-sectional study were to explore reliability and validity the Norwegian version Patient-Reported Outcome Measurement System®-Profile 57 (PROMIS-57) questionnaire in a general population sample, n = 408, examine Item Response properties factor structure.Reliability measures obtained from analysis item response theory (IRT) methods. Correlations between PROMIS-57 RAND-36-item health survey (RAND36) examined for concurrent discriminant validity. Factor structure IRT assumptions with model fit graphic plots inspected, differential functioning (DIF) language, age, gender, education level examined.PROMIS-57 demonstrated excellent satisfactory seven domains was supported. met unidimensionality, local independence, monotonicity, invariance no DIF consequence language or age groups. Estimated common variance (ECV) per domain confirmatory (CFA) supported unidimensionality all domains. GRM Model demonstrates acceptable fit.The psychometric satisfactory. Hence, 57-item along PROMIS-29, corresponding 8 4 short forms physical function, anxiety, depression, fatigue, sleep disturbance, social participation ability pain interference, are considered suitable use research clinical care populations. Further studies on longitudinal sensitivity patient populations calibration and/or reference scores needed.