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

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

BMC FAMILY PRACTICE, vol.17, 2016 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 17
  • Publication Date: 2016
  • Doi Number: 10.1186/s12875-016-0449-4
  • Title of Journal : BMC FAMILY PRACTICE


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.