Psychometric properties of the PROMIS-57 questionnaire, Norwegian version.

ABSTRACT:

Purpose

The aims of this cross-sectional study were to explore reliability and validity of the Norwegian version of the Patient-Reported Outcome Measurement System^®-Profile 57 (PROMIS-57) questionnaire in a general population sample, n = 408, and to examine Item Response properties and factor structure.

Methods

Reliability measures were obtained from factor analysis and item response theory (IRT) methods. Correlations between PROMIS-57 and RAND-36-item health survey (RAND36) were examined for concurrent and discriminant validity. Factor structure and IRT assumptions were examined with factor analysis methods. IRT Item and model fit and graphic plots were inspected, and differential item functioning (DIF) for language, age, gender, and education level were examined

SUBMITTER: Rimehaug SA 

PROVIDER: S-EPMC8800876 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature