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机译:Assessing the equivalence of Web-based and paper-and-pencil questionnaires using differential item and test functioning (DIF and DTF) analysis: a case of the Four-Dimensional Symptom Questionnaire (4DSQ)
Department of General Practice and Elderly Care Medicine, Amsterdam Public Health Research;
Scientific Center for Care and Welfare (Tranzo), Tilburg University;
CentERdata Institute for Data Collection and Research, Tilburg UniversityDepartment of Epidemiology & Biostatistics, Amsterdam Public Health Research Institute, VU;
Measurement equivalence; Web-based questionnaire; Paper-and-pencil questionnaire; Differential item functioning; Differential test functioning; Bifactor model;