title: A study of the relationship between the T&T olfactometer and the University of Pennsylvania Smell Identification Test in a Japanese population.
abstract: The University of Pennsylvania Smell Identification Test (UPSIT) and a smell ability questionnaire were administered to 167 Japanese volunteers ranging in age from 20 to 59 years. Of these subjects, 80 also received the T&T olfactometer threshold test. Of the latter subjects, 36 were patients tested before endoscopic nasal surgery for sinusitis and polyposis. The patients exhibited decreased smell function, as measured by the T&T olfactometer, the UPSIT, and a 30-item version of the UPSIT in which the 10 least familiar items were removed (ps < 0.001). Spearman correlations ranging from 0.53 to 0.70 were found between (i) scores on the 30- and 40-item UPSITs and (ii) the T&T detection and recognition threshold values. Significant correlations were found between scores on the smell ability questionnaire and the olfactory test measures (UPSIT30 r = 0.56; UPSIT40 r = 0.58; T&T detection r = 0.56; T&T recognition r = 0.69, p < 0.001), indicating that subjects are relatively accurate in assessing their olfactory ability. This study suggests that the 30 and 40-item UPSITs correlate well with measures derived from the T&T olfactometer, and that all three tests are sensitive to the smell loss of Japanese sinusitis/polyposis patients.
authors.affiliation: Department of Otorhinolaryngology, Nagoya City University Medical School, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Kondo
authors.forename: T
authors.initials: T
authors.lastname: Matsuda
authors.forename: M
authors.initials: M
authors.lastname: Hashiba
authors.forename: S
authors.initials: S
authors.lastname: Baba
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D009298:Nasal Polyps / Q000150:complications; D000857:Olfaction Disorders / Q000175:diagnosis* / Q000209:etiology / Q000523:psychology; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012684:Sensory Thresholds; D012852:Sinusitis / Q000150:complications; D012903:Smell; D018709:Statistics, Nonparametric; D011795:Surveys and Questionnaires / Q000592:standards*