Interpretation of differential item functioning analyses using external review

Neil W Scott, Peter Fayers, Neil K Aaronson, Andrew Bottomley, Alexander de Graeff, Mogens Groenvold, Chad Gundy, Michael Koller, Morten A Petersen, Mirjam A G Sprangers, on behalf of the EORTC Quality of Life Group and the Quality of Life Cross-Cultural Meta-Analysis Group

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Abstract

Differential item functioning (DIF) analyses are used to determine whether certain groups respond differently to a particular item of a test or questionnaire; however, these do not explain the reasons for observed response differences. Many studies have used external reviews of items, sometimes using blinded reviewers, to help interpret these results. The authors conducted a literature review of this topic to describe the current usage of external reviews alongside DIF analyses. It concentrated on studies of health-related quality of life instruments, but studies in other fields were also considered. Relatively few examples of blinded item reviews were identified, and these were mostly from educational studies. A case study using blinded bilingual reviewers alongside translation DIF analyses of a health-related quality of life instrument is described. Future researchers should consider conducting external item reviews alongside DIF analyses.
Original languageEnglish
Pages (from-to)253-258
Number of pages6
JournalExpert Review of Pharmacoeconomics & Outcomes Research
Volume10
Issue number3
DOIs
Publication statusPublished - Jun 2010

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Scott, N. W., Fayers, P., Aaronson, N. K., Bottomley, A., de Graeff, A., Groenvold, M., ... on behalf of the EORTC Quality of Life Group and the Quality of Life Cross-Cultural Meta-Analysis Group (2010). Interpretation of differential item functioning analyses using external review. Expert Review of Pharmacoeconomics & Outcomes Research, 10(3), 253-258. https://doi.org/10.1586/erp.10.22

Interpretation of differential item functioning analyses using external review. / Scott, Neil W; Fayers, Peter; Aaronson, Neil K; Bottomley, Andrew; de Graeff, Alexander; Groenvold, Mogens; Gundy, Chad; Koller, Michael; Petersen, Morten A; Sprangers, Mirjam A G; on behalf of the EORTC Quality of Life Group and the Quality of Life Cross-Cultural Meta-Analysis Group.

In: Expert Review of Pharmacoeconomics & Outcomes Research, Vol. 10, No. 3, 06.2010, p. 253-258.

Research output: Contribution to journalArticle

Scott, NW, Fayers, P, Aaronson, NK, Bottomley, A, de Graeff, A, Groenvold, M, Gundy, C, Koller, M, Petersen, MA, Sprangers, MAG & on behalf of the EORTC Quality of Life Group and the Quality of Life Cross-Cultural Meta-Analysis Group 2010, 'Interpretation of differential item functioning analyses using external review', Expert Review of Pharmacoeconomics & Outcomes Research, vol. 10, no. 3, pp. 253-258. https://doi.org/10.1586/erp.10.22
Scott, Neil W ; Fayers, Peter ; Aaronson, Neil K ; Bottomley, Andrew ; de Graeff, Alexander ; Groenvold, Mogens ; Gundy, Chad ; Koller, Michael ; Petersen, Morten A ; Sprangers, Mirjam A G ; on behalf of the EORTC Quality of Life Group and the Quality of Life Cross-Cultural Meta-Analysis Group. / Interpretation of differential item functioning analyses using external review. In: Expert Review of Pharmacoeconomics & Outcomes Research. 2010 ; Vol. 10, No. 3. pp. 253-258.
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