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Normative data for the Vietnamese smell identification test.

Tai Ngoc Tran1, Thuong Huyen Thi Dang1, Truc Thanh Thai2

  • 1Movement Disorder Unit, Neurology Department, University Medical Center, University of Medicine and Pharmacy at Ho Chi Minh City, Viet Nam.

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Summary
This summary is machine-generated.

The Vietnamese Smell Identification Test (VSIT) reveals that olfactory function declines with age, with younger adults performing better than older adults. Females also demonstrated superior odor identification compared to males.

Keywords:
HyposmiaNormative dataOlfactionSmell identification test

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Area of Science:

  • Neurology
  • Otolaryngology
  • Psychophysics

Background:

  • Olfactory dysfunction impacts quality of life and can indicate underlying neurological conditions.
  • Standardized tests are crucial for assessing and diagnosing olfactory impairments.
  • The Vietnamese Smell Identification Test (VSIT) was developed to evaluate olfactory function in the Vietnamese population.

Purpose of the Study:

  • To establish normative values for the VSIT across different age groups and sexes in Vietnam.
  • To investigate the influence of age and sex on olfactory identification abilities using the VSIT.

Main Methods:

  • A cross-sectional study involving 391 healthy Vietnamese adults aged 18 and above.
  • Participants completed the 12-item Vietnamese Smell Identification Test (VSIT) to assess odor identification.
  • Exclusion criteria included a history of olfactory disturbances.

Main Results:

  • Younger adults (18-39 years) exhibited significantly better olfactory identification than older adults (over 50 years) (p < 0.001).
  • Females scored significantly higher on the VSIT than males (p = 0.02).
  • Sensitivity to eight specific odors (lemon, garlic, banana, coffee, mango, guava, apple, watermelon) decreased with age.

Conclusions:

  • Normative data from this study can aid in interpreting individual VSIT scores.
  • Age and sex are significant factors influencing VSIT performance.
  • Further research is recommended to account for age and sex as confounders in olfactory assessments.