Cross-cultural validation of the Turkish Four-Dimensional Symptom Questionnaire (4DSQ) using differential item and test functioning (DIF and DTF) analysis


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Terluin B., Unalan P. C., Sipahioglu N., Ozkul S. A., Van Marwijk H. W. J.

BMC FAMILY PRACTICE, cilt.17, 2016 (SCI-Expanded, Scopus)

Özet

Background: The Four-Dimensional Symptom Questionnaire (4DSQ) is originally a Dutch 50 item questionnaire developed in primary care to assess distress, depression, anxiety and somatization. We aimed to develop and validate a Turkish translation of the 4DSQ.