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Validity and Reliability of the French Olfactory Disorders Questionnaire-10.

Jérôme R Lechien1,2,3,4,5, Luigi A Vaira5,6,7, Lea Lamoulen8

  • 1Department of Surgery, Faculty of Medicine, UMONS Research Institute for Health Sciences and Technology, University of Mons, Mons, Belgium.

Journal of Otolaryngology - Head & Neck Surgery = Le Journal D'Oto-Rhino-Laryngologie Et De Chirurgie Cervico-Faciale
|November 24, 2025
PubMed
Summary
This summary is machine-generated.

A new short French Olfactory Disorders Questionnaire (Fr-ODQ-10) was validated for patients with olfactory dysfunction. This 10-item questionnaire is reliable and significantly correlates with olfactory test results.

Keywords:
Olfactory Disorder Questionnaireanosmiaodorolfactionotolaryngologyrhinologysmell

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Area of Science:

  • Otolaryngology
  • Neuroscience
  • Psychophysics

Background:

  • French Olfactory Questionnaires can be lengthy, potentially impacting patient engagement.
  • Olfactory dysfunction (OD) diagnosis and management require efficient assessment tools.

Purpose of the Study:

  • To develop and validate a concise French version of the Olfactory Disorders Questionnaire (Fr-ODQ-10).
  • To assess the reliability and validity of the Fr-ODQ-10 for evaluating olfactory function.

Main Methods:

  • A prospective, multicenter study involving patients with OD and asymptomatic controls.
  • Statistical analysis identified 10 key items for the Fr-ODQ-10 from the full Fr-ODQ.
  • Internal consistency (Cronbach's alpha), test-retest reliability, and external validity (correlation with TDI and Fr-ODQ) were evaluated.

Main Results:

  • The Fr-ODQ-10 demonstrated high external validity, correlating significantly with the TDI test (rs=0.228, P=.001) and the full Fr-ODQ (rs=0.875, P=.001).
  • Internal validity was high, with significantly lower scores in controls compared to OD patients (P=.001).
  • Good internal consistency (α=0.796) and adequate external consistency were observed. The Fr-ODQ-10 decreased post-treatment, and a score >7.5 indicated abnormality (sensitivity: 84.8%, specificity: 84.2%).

Conclusions:

  • The Fr-ODQ-10 is a valid and reliable clinical tool for assessing olfactory disorders.
  • Its brevity enhances patient participation, making it a practical instrument for clinical use.
  • The Fr-ODQ-10 correlates well with psychophysical olfactory assessments, aiding in diagnosis and treatment monitoring.