The accuracy and reliability of the Turkish version of the Fonseca anamnestic index in temporomandibular disorders

Objective To determine the reliability and diagnostic accuracy of the Turkish version of the Fonseca anamnestic index (FAI-T). Methods The cultural equivalence of the FAI was established according to the International Network for Orofacial Pain and Related Disorders Methodology. The test-retest reliability, internal consistency, and diagnostic accuracy of the FAI-T was carried out in a sample of 66 controls and 139 patients with TMD. Diagnostic accuracy of the FAI-T was evaluated against the Research Diagnostic Criteria for Temporomandibular Disorders. Results Internal consistency analysis resulted in a Cronbach's alpha coefficient of 0.805. The intraclass correlation coefficient (ICC) values of each index question ranged from 0.739 to 0.897. FAI had a high level of accuracy (area under the ROC curve of 0.928). Conclusion The results provide considerable evidence that the FAI-T can be used as a screening tool for the identification of TMD in Turkish-speaking populations.