Turkish version of the American Academy of Orofacial Pain screening questionnaire for temporomandibular disorders: Its cross-cultural adaptation, validity, and reliability.

Objectives: This study aims to translate and cross-culturally adapt the American Academy of Orofacial Pain (AAOP) screening questionnaire and assess its validity and reliability. Patients and methods: This cross-sectional study included a total of 60 patients (16 males, 44 females; mean age: 50.9±17.3 years; range, 19 to 84 years) admitted to a Physical Medicine And Rehabilitation Outpatient Clinic  between January 2016 and June 2016. Backward and forward translation of AAOP questionnaire was performed in both languages. Diagnostic Criteria for Temporomandibular Disorders was used to as a reference standard. Validity was assessed with internal construct and criterion validity. Reliability was evaluated with test-retest reliability and internal consistency. Results: Fifty-seven percent of the patients were classified as having a temporomandibular disorder. The factor analysis yielded three components that explained 63.8% of the variance. The internal consistency of the AAOP questionnaire was acceptable (Cronbach's alpha value=0.781). The correlation coefficient for the intra- and interrater reliability were found as 0.740 and 0.713, respectively. Conclusion: The Turkish version of the AAOP screening questionnaire is a valid and reliable tool for screening of patients admitted to physical medicine and rehabilitation outpatient clinics with a good internal consistency, intra- and interrater reliability.