Validity and reliability of a french version of the olfactory disorders questionnaire

Abstract

Objective To validate a French version of the Olfactory Disorders Questionnaire (Fr-ODQ). Methods Patients with olfactory disorder (OD) and controls were enrolled from two medical centers. Individuals completed the Fr-ODQ and the French version of the sinonasal outcome tool-22 (SNOT-22). The extended Sniffin'Sticks procedure was used to test odor Threshold, Discrimination, and Identification (TDI). Cronbach’s alpha was used to measure the internal consistency of Fr-ODQ. The reliability and the external validity were evaluated through a test–retest approach and by correlating Fr-ODQ and SNOT-22 scores. Results Eighty-nine patients with OD and 65 healthy individuals completed the evaluations. The Cronbach’s alpha was 0.827, reporting adequate internal consistency. The test–retest reliability was high (rs = 0.944, p = 0.001). The external validity was adequate regarding the significant correlation between Fr-ODQ and SNOT-22 (rs = 0.498; p = 0.001). Patients with OD reported a significant higher score of Fr-ODQ than healthy individuals (p < 0.001), indicating a high internal validity. The baseline Fr-ODQ significantly improved after 3-month olfactory training, which corroborated the improvement of TDI scores. Conclusion The Fr-ODQ is the first patient-reported outcome questionnaire validated for French speaking patients. Fr-ODQ is reliable and valid for the evaluation of the olfactory dysfunction and the related impact on quality of life of French-speaking patients.

Comparison of prevalence and evolution of COVID-19 olfactory disorders in patients infected by D614 (wild) and B.1.1.7. Alpha variant: a brief report

“…Patients self-reporting partial or total loss of smell were included. All of them completed the validated French version of the Olfactory Disorder Questionnaire (ODQ) [ 11 ], and psychophysical evaluations were performed.…”

“…The patient-reported olfactory symptoms were evaluated through the validated French version of the Olfactory Disorder Questionnaire (ODQ) [ 11 ]. Parosmia was defined for patients as a qualitative distortion of smell perception [ 12 ].…”

Effectiveness of Platelet‐Rich Plasma for COVID‐19‐Related Olfactory Dysfunction: A Controlled Study

“…The patient‐reported olfactory and gustatory evaluations were performed through the definitions of smell and taste component of the National Health and Nutrition Examination Survey, 16 and the Olfactory Disorder Questionnaire (ODQ). ODQ is a validated patient‐reported outcome questionnaire including parosmia (/12), quality of life (/57), and sincerity (/18) scores (Supplemental Appendix 1, available online) 17 . The questionnaire was available in Italian 18 and English 19 (Supplemental Appendix 2, available online).…”

“…ODQ is a validated patientreported outcome questionnaire including parosmia (/12), quality of life (/57), and sincerity (/18) scores (Supplemental Appendix 1, available online). 17 The questionnaire was available in Italian 18 and English 19 (Supplemental Appendix 2, available online). The ODQ total score ranges from 0 (no OD) to 87 (important impact of OD on quality of life).…”

Validity and reliability of the Questionnaire of Olfactory Disorders for Italian-speaking patients with olfactory dysfunction

“…It evaluates various aspects of patients’ experiences with olfactory disorders, addressing issues such as social and emotional well-being, food enjoyment, safety concerns, and daily activities. In recent years, the QOD has been validated in English 10 , Portuguese 11 , Spanish 12 , Korean 13 , Chinese 14 and French 15 . The short version of the QOD was recently validated in Italian 16 .…”