title: Validation of the persian translation of the swallowing disturbance questionnaire in Parkinson's disease patients.
abstract: Dysphagia, as a common finding in Parkinson's disease (PD) patients, was estimated to be present in 80-95% of this population during different stages of the disease. The Swallowing Disturbance Questionnaire (SDQ) was created as a self-rated dysphagia screening tool in PD. According to the guidelines for cross-cultural adaptation, Persian version of this questionnaire (SDQ-P) was developed. 59 Persian patients (39 men and 20 women) participated in the study. They responded to the SDQ-P and underwent videofluoroscopic swallowing study (VFSS). Aspiration during VFSS was compared with questionnaire results for each individual. Cronbach's alpha coefficient for the questionnaire was 0.86 and based on SDQ-P 15 patients (25.4%) were dysphagic, while 10 patients (16.9%) showed aspiration during VFSS. SDQ-P sensitivity and specificity in predicting aspiration were 96.7 and 91.2%; therefore, the SDQ-P could be a prognostic tool for aspiration. The positive predictive value (PPV), the negative predictive value (NPV), and the pre- and posttest probabilities of aspiration were 0.67, 1, 16.9%, and 66.7%, respectively. In summary, this study demonstrated the reliability and also the feasibility of SDQ-P for screening of aspiration in Iranian patients with PD. Further evaluation of SDQ-P in larger subject population would be suggested.
authors.affiliation: Isfahan Neuroscience Research Center, Isfahan University of Medical Sciences, Isfahan 8174673461, Iran.
authors.forename: Ali
authors.initials: A
authors.lastname: Rajaei
authors.affiliation: Mahoor Clinic of Speech and Language Pathology, Iran.
authors.forename: S Abolfazl
authors.initials: SA
authors.lastname: Azargoon
authors.affiliation: Audiology Department, School of Rehabilitation Sciences, Isfahan University of Medical Sciences, Isfahan 8174673461, Iran.
authors.forename: Mohammad Hussein
authors.initials: MH
authors.lastname: Nilforoush
authors.affiliation: Department of Speech and Language Pathologist, Tehran University of Medical Sciences, Tehran 141556559, Iran.
authors.forename: Ebrahim
authors.initials: E
authors.lastname: Barzegar Bafrooei
authors.affiliation: Department of Neurology, Isfahan University of Medical Sciences, Isfahan 8174673461, Iran.
authors.forename: Fereshteh
authors.initials: F
authors.lastname: Ashtari
authors.affiliation: Department of Neurology, Isfahan University of Medical Sciences, Isfahan 8174673461, Iran.
authors.forename: Ahmad
authors.initials: A
authors.lastname: Chitsaz