ArticleQuality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation2018

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).

Berend Terluin et al.PubMed ↗Full text ↗Publisher ↗

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