E-ISSN 2602-4837
Reliability and validity of the Turkish version of the questionnaire of olfactory disorders [Tr-ENT]
Tr-ENT. 2020; 30(1): 26-32 | DOI: 10.5606/Tr-ENT.2020.28291

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

Belgin Tutar1, Ziya Saltürk1, Güler Berkiten1, Ayşe Enise Göker1, Melis Ece Arkan1, Muhammet Enis Ekincioğlu1, Semih Karaketir1, Ercan Kulak2, Yavuz Uyar1
1Department of Otorhinolaryngology, Okmeydanı Training and Research Hospital, Istanbul, Turkey
2Department of Public Health, Marmara University, Faculty of Medicine, Istanbul, Turkey

INTRODUCTION: This study aims to test the reliability and validity of the Turkish version of the Questionnaire of Olfactory Disorders (QOD).
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.
DISCUSSION AND 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.

Belgin Tutar, Ziya Saltürk, Güler Berkiten, Ayşe Enise Göker, Melis Ece Arkan, Muhammet Enis Ekincioğlu, Semih Karaketir, Ercan Kulak, Yavuz Uyar. Reliability and validity of the Turkish version of the questionnaire of olfactory disorders. Tr-ENT. 2020; 30(1): 26-32

Corresponding Author: Belgin Tutar, Türkiye
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