A Rasch model analysis to test the cross-cultural validity of the EuroQoL-5D in the Schizophrenia Outpatient Health Outcomes Study

Acta Psychiatr Scand Suppl. 2003:(416):24-9. doi: 10.1034/j.1600-0447.107.s416.6.x.

Abstract

Objective: To investigate the pan-European, cross-cultural validity of the EuroQol-5D (EQ-5D) for assessing quality of life in the Schizophrenia Outpatient Health Outcomes (SOHO) Study.

Method: The EQ-5D items investigated were mobility, self-care, usual activities, pain/discomfort and anxiety/depression. A Rasch rating scale model (a form of differential item functioning) was used to identify invariance of item calibrations for the 10 European countries participating in the SOHO study.

Results: There was general congruence in the EQ-5D item calibration pattern. The rank of average EQ-5D item calibrations was similar for all countries except Denmark. Denmark showed slight misfits for mobility and pain/discomfort.

Conclusion: The EQ-5D is an appropriate measure of health-related quality of life across European countries and translations.

Publication types

  • Multicenter Study
  • Research Support, Non-U.S. Gov't
  • Validation Study

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Cross-Cultural Comparison*
  • Europe
  • Female
  • Humans
  • Male
  • Middle Aged
  • Models, Statistical*
  • Outcome Assessment, Health Care
  • Outpatients
  • Psychiatric Status Rating Scales*
  • Quality of Life*
  • Reproducibility of Results
  • Schizophrenia* / drug therapy
  • Schizophrenia* / physiopathology
  • Schizophrenic Psychology
  • Severity of Illness Index
  • Treatment Outcome