Abstract
The relationship between anosmia and anthropometric factor has not been investigated sufficiently yet. Thus, the purpose of this study was to evaluate anthropometric risk factors of anosmia in an Asian population. Claims data of subjects over 20 years old who underwent a national health examination conducted by the Korean National Insurance Program between 2005 and 2008 were analyzed. They were followed up through the Korean National Insurance Service database. Individuals newly diagnosed with anosmia were identified after the initial health examination until the last follow-up date (December 31, 2016). The incidence of anosmia was high in females younger than 70 years old. The hazard ratio of anosmia was found to be higher in taller groups. The tallest quintile had higher risk than the shortest quintile (hazard ratio = 1.185, 95% confidence interval: 1.147–1.225) after adjusting for age, sex, BMI, income, smoking status, alcohol consumption, regular physical activity, hypertension, diabetes mellitus, and dyslipidemia. This study showed that the incidence of anosmia had a positive association with height. However, careful interpretation is needed to generalize our result because of the limitation of the study population. Further studies are needed to clarify the genetic or environmental causes of anosmia.
Highlights
The relationship between anosmia and anthropometric factor has not been investigated sufficiently yet
Q1 had higher incidence rate of hypertension and dyslipidemia than Q5. This trend continued from Q1 to Q5 for hypertension (26.7%, 25.23%, 26.62%, 25.25%, 24.96%, respectively) and dyslipidemia (18.94%, 18.34%, 18.7%, 18.07%, 17.26%, respectively)
Glomerular filtration rate (GFR) showed a decreasing trend from Q1 (8 9.49 ± 39.05 mL/min/1.73m2 ) to Q5 (8 7.46 ± 48.72 mL/min./1.73m2 ). Other characteristics such as age, sex, smoking, fasting blood sugar (FBS), body mass index (BMI), blood pressure (BP), or triglyceride (TG) showed no obvious trends according to height, they were significantly different among quintile groups
Summary
The relationship between anosmia and anthropometric factor has not been investigated sufficiently yet. The purpose of this study was to evaluate anthropometric risk factors of anosmia in an Asian population. Despite the clinical importance of anosmia, its risk factor in Asia has been rarely reported. Previous studies on non-Asian population have presented many risk factors of anosmia, including age, sex, air pollution, virus, smoking, income rate, diabetes mellitus, and neurodegenerative disease[13,14,15,16,17]. The relationship between anosmia and anthropometric factors has not been reported yet. The objective of this study was to identify new anthropometric risk factor of anosmia in an Asian population through analyses of big database of Korean National Health Insurance Service (KNHIS)
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