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A new clinical olfactory function test: cross-cultural influence.

Masayoshi Kobayashi1, Evan R Reiter, Laurence J DiNardo

  • 1Department of Physiology, Virginia Commonwealth University School of Medicine, Richmond, USA. m-koba@doc.medic.mie-u.ac.jp

Archives of Otolaryngology--Head & Neck Surgery
|April 18, 2007
PubMed
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The Odor Stick Identification Test for Japanese (OSIT-J) can assess olfactory function in US patients, despite minor cultural bias in some odors. This olfactory test is quicker and preferred by patients over the standard CCCRC test.

Area of Science:

  • Otolaryngology
  • Neuroscience
  • Psychophysics

Background:

  • Olfactory dysfunction is a common complaint.
  • Standardized olfactory tests are crucial for diagnosis and management.
  • Cross-cultural validation of olfactory tests is necessary to ensure accurate assessment in diverse populations.

Purpose of the Study:

  • To evaluate the Odor Stick Identification Test for Japanese (OSIT-J) for cross-cultural olfactory function assessment in a US patient cohort.
  • To compare the OSIT-J with the Connecticut Chemosensory Clinical Research Center (CCCRC) olfactory function test.
  • To assess patient perceptions of olfactory testing methods.

Main Methods:

  • A cross-sectional prospective study was conducted.
  • Fifty US patients with olfactory dysfunction complaints were enrolled.

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  • Olfactory function was assessed using the OSIT-J and CCCRC tests, alongside patient interviews and self-reported function levels.

    • Main Results:

    • The OSIT-J administration time (8 minutes) was significantly shorter than the CCCRC test (21 minutes).
    • Strong correlations were observed between OSIT-J scores, CCCRC scores (r(s) = 0.80), and self-reported function (r(s) = 0.73).
    • Patients found the OSIT-J easier, more interesting, and its odors more pleasant, despite minor unfamiliarity with 3 out of 13 odors.

    Conclusions:

    • Cultural bias in olfactory test odorants should be investigated.
    • A modified OSIT-J demonstrates utility for assessing olfactory function in US patients.
    • The OSIT-J offers a time-efficient and patient-preferred alternative for olfactory assessment.