Table 3.

Risk factors categorized by age tertiles

	Age tertiles
	≤ 55 n = 28,390		56–65 n = 30,343		≥ 66 n = 31,361
Sex
Female	6424	(22.6%)	10,252	(33.8%)	11,734	(37.4%)
Male	21,966	(77.4%)	20,091	(66.2%)	19,627	(62.6%)
Body mass index (kg/m2)	28.1	(4.28)	27.9	(4.38)	27.2	(4.32)
Total cholesterol (mg/dL)	178.2	(48.37)	174.3	(47.11)	170.8	(46.20)
LDL cholesterol (mg/dL)	108.8	(39.78)	106.2	(38.47)	103.8	(37.73)
HDL cholesterol (mg/dL)	38.4	(10.01)	40.1	(10.51)	41.6	(11.04)
Triglyceride (mg/dL)	181.9	(110.49)	164.4	(94.79)	144.4	(81.36)
Dyslipidemia
No	9453	(33.4%)	9942	(32.8%)	12,735	(40.7%)
Yes	18,880	(66.6%)	20,351	(67.2%)	18,538	(59.3%)
Fasting blood sugar (mg/dL)	119.4	(52.74)	125.8	(56.10)	120.6	(50.80)
Diabetes Mellitus
No	20,299	(71.6%)	18,558	(61.2%)	20,416	(65.2%)
Yes	8064	(28.4%)	11,753	(38.8%)	10,887	(34.8%)
Hypertension
No	15,353	(54.1%)	12,294	(40.6%)	10,455	(33.4%)
Yes	13,010	(45.9%)	18,022	(59.4%)	20,867	(66.6%)
Ever cigarette smoking
No	14,097	(49.7%)	19,044	(62.8%)	22,767	(72.7%)
Current	9617	(33.9%)	6283	(20.7%)	3420	(10.9%)
Former	4641	(16.4%)	4974	(16.4%)	5112	(16.3%)
Ever opium use
No	22,203	(80.7%)	25,215	(85.6%)	27,909	(91.8%)
Current	4148	(15.1%)	3473	(11.8%)	2128	(7.0%)
Former	1152	(4.2%)	766	(2.6%)	354	(1.2%)

Numbers and percentages are shown for categorical variables (sex, dyslipidemia, diabetes, hypertension, ever cigarette smoking, and ever opium use). Means and standard deviations are presented for continuous variables (age; body mass index; total, LDL, HDL cholesterol; triglycerides; fasting blood sugar)

All p-values were < 0.001 in Chi square and one-way ANOVA analysis