OBJECTIVES/HYPOTHESIS: 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. STUDY DESIGN: Prospective clinical study. METHODS: 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. RESULTS: 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 groups of patients (normosmics, hyposmics, anosmics; all pairwise comparisons, P < .001). The QOD-PS score was significantly higher in normosmics and hyposmics compared to anosmics. Patients' age was negatively correlated with the QOD-PS, whereas it was positively correlated with BDI (P < .001) and Zung (P = .007). Females presented significantly higher scores in the QOD, QOD-NS, BDI, and Zung (all P < .001) compared to males. CONCLUSIONS: The QOD proved to be a valid, reliable, and easy-to-use method of assessment of olfaction-related QoL with high specificity and sensitivity.
OBJECTIVES/HYPOTHESIS: 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. STUDY DESIGN: Prospective clinical study. METHODS: 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. RESULTS: 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 groups of patients (normosmics, hyposmics, anosmics; all pairwise comparisons, P < .001). The QOD-PS score was significantly higher in normosmics and hyposmics compared to anosmics. Patients' age was negatively correlated with the QOD-PS, whereas it was positively correlated with BDI (P < .001) and Zung (P = .007). Females presented significantly higher scores in the QOD, QOD-NS, BDI, and Zung (all P < .001) compared to males. CONCLUSIONS: The QOD proved to be a valid, reliable, and easy-to-use method of assessment of olfaction-related QoL with high specificity and sensitivity.
Authors: Andrew J Thomas; Jess C Mace; Vijay R Ramakrishnan; Jeremiah A Alt; Jose L Mattos; Rodney J Schlosser; Zachary M Soler; Timothy L Smith Journal: Int Forum Allergy Rhinol Date: 2020-02-03 Impact factor: 3.858
Authors: Aytug Altundag; Hakan Tekeli; Murat Salihoglu; Melih Cayonu; Mustafa Tansel Kendirli; Halit Yasar; Ahmet Ozturk Journal: Indian J Otolaryngol Head Neck Surg Date: 2014-04-08
Authors: Catherine Loftus; Rodney J Schlosser; Timothy L Smith; Jeremiah A Alt; Vijay R Ramakrishnan; Jose L Mattos; Elliott Mappus; Kristina Storck; Frederick Yoo; Zachary M Soler Journal: Laryngoscope Date: 2019-10-11 Impact factor: 3.325