Reliability and validity of the Turkish version of the questionnaire of olfactory disorders

Authors : Belgin TUTAR, Ziya SALTÜRK, Güler BERKİTEN, Ayşe Enise GÖKER, Melis Ece ARKAN, Muhammet Enis EKİNCİOĞLU, Semih KARAKETİR, Ercan KULAK, Yavuz UYAR

Pages : 26-32

View : 20 | Download : 14

Publication Date : 2020-03-20

Article Type : Research Paper

Abstract :Objectives: This study aims to test the reliability and validity of the Turkish version of the Questionnaire of Olfactory Disorders QOD . Patients and Methods: This prospective study was conducted between June 2018 and January 2019. Patients who presented to Okmeydanı Training and Research Hospital outpatient clinic with a diagnosis of chronic sinusitis and/or septum deviation completed the Connecticut Chemosensory Clinical Research Center smell test. Forty patients 24 males, 16 females; mean age 42.3±13.7 years; range, 18 to 71 years with olfactory disorders anosmia, hyposmia completed the QOD at the time of diagnosis and one day prior to surgery. Forty volunteers control group 22 males, 18 females; mean age 38.3±13.4 years; range, 18 to 65 years without nasal pathology, olfactory dysfunction or a history of head trauma also completed the QOD. The results of the two tests were then compared. Results: The QOD-parosmia QOD-P , QOD-statements of QoL QOD-LQ , and QOD-visual analog scale QOD-VAS values were significantly higher in the study group p<0.001 . There was no statistically significant change in the QOD-P, QOD-LQ, QOD-sincerity, and QOD-VAS values of the patients with anosmia and hyposmia at the time of diagnosis compared with those one day prior to surgery. In all patients, the Cronbach’s alpha coefficient for the QOD-P, QOD-LQ, and QOD-VAS was 0.719, 0.892, and 0.984, respectively, with relatively high internal consistency. Conclusion: We conclude that the Turkish version of the QOD is a reliable and valid instrument, particularly in patients with parosmia
Keywords : Olfactory disorder, olfactory dysfunction, olfactory test, reliability, validity