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Related Experiment Videos

Prevalence of olfactory dysfunction: the skövde population-based study.

Annika Brämerson1, Leif Johansson, Lars Ek

  • 1Department of Otorhinolaryngology, Central Hospital, Skövde, Sweden.

The Laryngoscope
|April 6, 2004
PubMed
Summary

Olfactory dysfunction affects 19.1% of the adult Swedish population, with prevalence increasing with age and linked to nasal polyps and male gender. Diabetes and smoking were not significant risk factors in this study.

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Area of Science:

  • Epidemiology
  • Otolaryngology
  • Public Health

Background:

  • Olfactory dysfunction is frequently encountered in ear, nose, and throat (ENT) practices.
  • The prevalence of olfactory dysfunction in the general adult population remains largely unknown.

Purpose of the Study:

  • To determine the prevalence of olfactory dysfunction in an adult Swedish population.
  • To investigate the relationship between olfactory dysfunction and age, gender, diabetes mellitus, nasal polyps, and smoking habits.

Main Methods:

  • A cross-sectional, population-based epidemiological study was conducted.
  • A random sample of 1900 adult inhabitants from Skövde, Sweden, stratified by age and gender, was recruited.
  • Participants underwent clinical visits including questionnaires, a smell identification test, and nasal endoscopy.

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Main Results:

  • The overall prevalence of olfactory dysfunction was 19.1% (13.3% hyposmia, 5.8% anosmia) among 1387 participants.
  • Logistic regression revealed significant associations between impaired olfaction and aging, male gender, and nasal polyps.
  • Diabetes mellitus and nasal polyps were identified as risk factors for anosmia, but not gender or smoking.

Conclusions:

  • The study's sample size and design suggest representativeness for the Swedish population.
  • Prevalence data for olfactory dysfunction types were established with reasonable precision.
  • The findings provide insights into risk factors for olfactory dysfunction, though the non-significant link with smoking may warrant further investigation.