Key result
The overall prevalence of asymptomatic carotid artery stenosis ≥ 50% was 1% in a Korean health screening population, with male gender significantly increasing the risk (OR 3.46).
Cross-Sectional (n=20,712)
No
Odds Ratio: 3.46 (95% CI 2.12–5.66)
p-value: p=0.001
Asymptomatic carotid artery stenosis ≥50% has a prevalence of 1% in a Korean health screening population, rising to 4% in men over 65, suggesting targeted screening may be beneficial in high-risk groups.
Low prevalence supports selective over routine screening in Koreans; leaves open optimal strategies and cost-effectiveness in Asian populations.
We attempted to investigate the prevalence and risk factors of carotid artery stenosis in Korea. Twenty thousand seven hundred twelve individuals who underwent carotid artery ultrasonography for health screening between March 2005 and March 2010 were retrospectively evaluated. The population was divided into four groups, according to the degree of stenosis, as Group A, below 29%; Group B, 30% to 49%; Group C, 50% to 74%; Group D, above 75%. The medical records of the individuals were investigated, and Fisher's exact test, chi-square tests, Kruskal-Wallis tests and a binary logistic regression model were used for statistical analysis. The prevalence of carotid stenosis was Group B, 5.5%; Group C, 0.9%; Group D, 0.1%. Old age, male gender, hypertension, diabetes mellitus and ischemic heart disease were significantly higher in Groups C and D (P = 0.001, 0.001, 0.001, 0.048, and 0.001, respectively). Among the males aged over 65 yr, the prevalence of carotid stenosis ≥ 50% and ≥ 30% were 4.0% and 18.2%, respectively. Asymptomatic carotid stenosis is not uncommon in Korea. Carotid ultrasonography is necessary for people with above-listed risk factors.
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Roh et al. (2011) conducted a cross-sectional in Asymptomatic carotid artery stenosis (n=20,712). Male gender vs. Female gender was evaluated on Presence of asymptomatic carotid artery stenosis ≥ 50% (OR 3.46, 95% CI 2.12-5.66, p=0.001). The overall prevalence of asymptomatic carotid artery stenosis ≥ 50% was 1% in a Korean health screening population, with male gender significantly increasing the risk (OR 3.46).
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