BACKGROUND Coronary artery calcification (CAC), a marker for atherosclerosis, is different according to ethnicity. However, the Korean data is a little. METHODS CAC was measured by multi-detector CT in 7832 asymptomatic subjects without history of ischemic heart disease (mean age 52.1 짹 8.2 years, male 84.9%) for screening subclinical atherosclerosis. RESULTS The distribution of Agatston, volume and mass scores according to sex and age were shown in Table1. After controlling age and sex, hypertension (OR 2.05, CI 1.81-2.30,p<0.001), diabetes (OR 1.41, CI 1.13-1.80,p=0.002), hyperlipidemia (OR 1.34, CI 1.19-1.50,p<0.001) and BMI (OR 1.02, CI 1.00-1.04, p=0.033) were independent predictors of CAC presence in multivariate analysis. CONCLUSIONS This is the largest data of CAC distribution measured by Agatston, volume and mass score in asymptomatic Korean people. It will be helpful to interpret CAC in the field of primary prevention.

Age		���40 (n=354)		41-50 (n=3337)		51-60 (n=2972)		61-70 (n=999)		>70 (n=170)
Sex		M(n=311)	F(n=43)	M(n=2973)	F(n=364)	M(n=2457)	F(n=515)	M(n=775)	F(n=224)	M(n=131)	F(n=39)
Prevalence of CAC(%)		8.7	2.3	23.8	4.9	42.5	19.2	64.6	46.9	83.2	82.1
Agatston score	Minimum/maximum	0/448.6	0/1.2	0/878.8	0/200.7	0/3991.0	0/681.0	0/2325.8	0/1020.6	0/5002.0	0/2260.0
	Mean짹SD	5.0짹33.8	0.03짹0.18	12.9짹53.1	1.9짹13.1	44.6짹153.6	10.3짹49.3	116.2짹266.4	40.8짹105.0	297.5짹760.0	183.1짹377.7
Volume score	Minimum/maximum	0/309.9	0/1.2	0/3085.0	0/126.6	0/3008.8	0/570.0	0/1925.8	0/1026.4	0/3793.0	0/1750.0
	Mean짹SD	3.6짹24.3	0.03짹0.18	11.5짹75.2	1.5짹10.9	36.0짹135.0	7.8짹40.1	87.0짹202.4	30.3짹89.5	206.4짹505.2	139.8짹297.2
Mass score	Minimum/maximum	0/89.7	0/1.2	0/341.0	0/35.1	0/666.3	0/36.9	0/540.6	0/192.4	0/256.4	0/111.5
	Mean짹SD