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Australian norms for a quantitative olfactory function test.

Alan Mackay-Sim1, Leah Grant, Caroline Owen

  • 1School of Biomolecular and Biomedical Science, Center for Molecular Neurobiology, Griffith University, Brisbane, Qld. 4111, Australia. a.mackay-sim@griffith.edu.au

Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia
|November 3, 2004
PubMed
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This study established normative olfactory function data for Australians using the Sniffin' Sticks test. Findings reveal age-related olfactory decline and high rates of smell loss in Parkinson's patients.

Area of Science:

  • Neuroscience
  • Clinical Psychology

Background:

  • Quantitative olfactory assessment is underutilized in clinical settings.
  • Olfactory loss is linked to significant morbidity and can aid in diagnosis.

Purpose of the Study:

  • To develop normative data for the Australian population using the 'Sniffin' Sticks' olfactory function test.
  • To establish clinical classifications for olfactory function (normosmic, hyposmic, nosmic) based on age and sex.

Main Methods:

  • Administered the 'Sniffin' Sticks' test to an Australian population sample.
  • Collected normative data to establish sex- and age-specific thresholds.
  • Assessed olfactory function classifications in a cohort of Parkinson's disease patients.

Main Results:

Related Experiment Videos

  • Australian females outperformed males, and both sexes showed age-related decline in olfactory function.
  • Established criterion scores for 'normosmic', 'hyposmic', and 'nosmic' classifications.
  • 81.1% of Parkinson's patients were classified as anosmic or severely hyposmic, with only 7.7% being normosmic.

Conclusions:

  • The developed normative data allows for the clinical use of 'Sniffin' Sticks' in Australia.
  • The study introduces 'rebyosmia' for age-related olfactory loss of unknown cause.
  • The findings highlight the prevalence of olfactory dysfunction in Parkinson's disease.