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- Title
Response to Commentary on Comparing translations of the EORTC QLQ-C30 using differential item functioning analyses.
- Authors
Scott, N. W.; Fayers, P. M.; Bottomley, A.; Aaronson, N. K.; de Graeff, A.; Groenvold, M.; Koller, M.; Petersen, M. A.; Sprangers, M. A. G.
- Abstract
The article presents a response to the comment on comparing translations of the European Organization for Research in the Treatment of Cancer questionnaire-C30 using differential item functioning (DIF) analysis. The author responds to three intriguing issues. First of the issue is the proposal that DIF analysis might have been better to condition on scale scores derived from Item Response Theory scoring; second, the issue of the choices of reference group; and third, issues that confounding and effect modification are challenging DIF analyses.
- Subjects
QUESTIONNAIRES; EDUCATIONAL tests &; measurements; ITEM response theory; PSYCHOLOGICAL tests; PSYCHOMETRICS; CANCER treatment; THERAPEUTICS
- Publication
Quality of Life Research, 2006, Vol 15, Issue 6, p1119
- ISSN
0962-9343
- Publication type
Article
- DOI
10.1007/s11136-006-0056-2