Cross-cultural inequivalence of dermatology-specific health-related quality of life instruments in psoriasis patients

Tamar Nijsten, David M. Meads, John De Korte, Francesca Sampogna, Joel M. Gelfand, Katia Ongenae, Andrea W. Evers, Matthias Augustin

Research output: Contribution to journalArticle

Abstract

The dermatology life questionnaire index (DLQI) and the Skindex are the most commonly used dermatology-specific health-related quality of life (HRQOL) instruments. Although these tools are used in international surveys and clinical trials, the cross-cultural equivalence of their items has not been documented. We used differential item functioning (DIF), which is part of the Rasch model, to assess the impact of cultural background on the items of the DLQI and Skindex-29 and-17. The data of the 450 psoriasis patients, who attended in- and outpatient dermatology centers, was collected retrospectively from five European and one US center. The DLQI and Skindex-29 scales did not fit the Rasch model (P

Original languageEnglish
Pages (from-to)2315-2322
Number of pages8
JournalJournal of Investigative Dermatology
Volume127
Issue number10
DOIs
Publication statusPublished - Oct 2007

ASJC Scopus subject areas

  • Dermatology
  • Medicine(all)

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    Nijsten, T., Meads, D. M., De Korte, J., Sampogna, F., Gelfand, J. M., Ongenae, K., Evers, A. W., & Augustin, M. (2007). Cross-cultural inequivalence of dermatology-specific health-related quality of life instruments in psoriasis patients. Journal of Investigative Dermatology, 127(10), 2315-2322. https://doi.org/10.1038/sj.jid.5700875