Olfaction-associated quality of life in chronic rhinosinusitis: adaptation and validation of an olfaction-specific questionnaire

The Laryngoscope
Efthimios SimopoulosVassilios Danielides

Abstract

To detect validity and reliability of the Questionnaire of Olfactory Disorders (QOD) compared to other quality-of-life (QoL) questionnaires, to explore its ability to reflect olfaction-related QoL changes, and to investigate age- and gender-related effects of olfactory changes on QOD results. Prospective clinical study. One hundred two patients (56 males, 46 females; mean age, 41.15 ± 16.31 years), suffering from chronic rhinosinusitis, whose olfactory function was measured using Sniffin' Sticks test were studied. All patients completed three validated general health-related QoL questionnaires (Short Form-36 Health Survey [SF-36], Beck Depression Inventory [BDI], and Zung anxiety scale), and the olfaction-related QOD. Internal consistency and test-retest reliability for the QOD was high. Convergent validity assessment showed statistically significant negative correlations of the QOD and the QOD-negative statements (NS) with overall SF-36 score (P < .05 for all groups) and positive correlations of the same scores with BDI and Zung (P < .001). The QOD-positive statements (PS) was positively correlated to SF-36. Discriminative validity demonstrated statistically significant differences of the QOD and QOD-NS scores between all grou...Continue Reading

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