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Item response theory was used to shorten EORTC QLQ-C30 scales for use in palliative care.
Petersen MA, Groenvold M, Aaronson N, Blazeby J, Brandberg Y, de Graeff A, Fayers P, Hammerlid E, Sprangers M, Velikova G, Bjorner JB; European Organisation for Research and Treatment of Cancer Quality of Life Group. Petersen MA, et al. Among authors: sprangers m. J Clin Epidemiol. 2006 Jan;59(1):36-44. doi: 10.1016/j.jclinepi.2005.04.010. Epub 2005 Sep 12. J Clin Epidemiol. 2006. PMID: 16360559
Use of differential item functioning analysis to assess the equivalence of translations of a questionnaire.
Petersen MA, Groenvold M, Bjorner JB, Aaronson N, Conroy T, Cull A, Fayers P, Hjermstad M, Sprangers M, Sullivan M; European Organisation for Research and Treatment of Cancer Quality of Life Group. Petersen MA, et al. Among authors: sprangers m. Qual Life Res. 2003 Jun;12(4):373-85. doi: 10.1023/a:1023488915557. Qual Life Res. 2003. PMID: 12797710
A simulation study provided sample size guidance for differential item functioning (DIF) studies using short scales.
Scott NW, Fayers PM, Aaronson NK, Bottomley A, de Graeff A, Groenvold M, Gundy C, Koller M, Petersen MA, Sprangers MA; EORTC Quality of Life Group; Quality of Life Cross-Cultural Meta-Analysis Group. Scott NW, et al. Among authors: sprangers ma. J Clin Epidemiol. 2009 Mar;62(3):288-95. doi: 10.1016/j.jclinepi.2008.06.003. Epub 2008 Sep 6. J Clin Epidemiol. 2009. PMID: 18774693
Comparing translations of the EORTC QLQ-C30 using differential item functioning analyses.
Scott NW, Fayers PM, Bottomley A, Aaronson NK, de Graeff A, Groenvold M, Koller M, Petersen MA, Sprangers MA; EORTC and the Quality of Life Cross-Cultural Meta-Analysis Group. Scott NW, et al. Among authors: sprangers ma. Qual Life Res. 2006 Aug;15(6):1103-15; discussion 1117-20. doi: 10.1007/s11136-006-0040-x. Qual Life Res. 2006. PMID: 16900290
The relationship between overall quality of life and its subdimensions was influenced by culture: analysis of an international database.
Scott NW, Fayers PM, Aaronson NK, Bottomley A, de Graeff A, Groenvold M, Koller M, Petersen MA, Sprangers MA; EORTC Quality of Life Group; Quality of Life Cross-Cultural Meta-Analysis Group. Scott NW, et al. Among authors: sprangers ma. J Clin Epidemiol. 2008 Aug;61(8):788-95. doi: 10.1016/j.jclinepi.2007.08.015. Epub 2008 Mar 21. J Clin Epidemiol. 2008. PMID: 18359194
442 results