期刊
ANNALS OF OTOLOGY RHINOLOGY AND LARYNGOLOGY
卷 127, 期 5, 页码 312-316出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/0003489418760055
关键词
olfactory threshold test; reliability; Smell Threshold Test; Snap & Sniff Threshold Test; test-retest; validity
Objectives: The Snap & Sniff (R) Threshold Test (S&S) has been recently developed to determine the olfactory threshold. The aim of this study was to further evaluate the validity and test-retest reliability of the S&S. Methods: The olfactory thresholds of 120 participants were determined using both the Smell Threshold Test (STT) and the S&S. The participants included 30 normosmic volunteers and 90 patients (60 hyposmic, 30 anosmic). The normosmic participants were retested using the STT and S&S at an intertest interval of at least 1 day. Results: The mean olfactory threshold determined with the S&S was -6.76 for the normosmic participants, -3.79 for the hyposmic patients, and -2 for the anosmic patients. The olfactory thresholds were significantly different across the 3 groups (P < .001). Snap & Sniff-based and STT-based olfactory thresholds were correlated weakly in the normosmic group (correlation coefficient = 0.162, P = .391) but more strongly correlated in the patient groups (hyposmic: correlation coefficient = 0.376, P = .003; anosmic: correlation coefficient = 1.0). The test-retest correlation for the S&S-based olfactory thresholds was 0.384 (P = .036). Conclusion: Based on validity and test-retest reliability, we concluded that the S&S is a proper test for olfactory thresholds.
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