Table 2. Baseline characteristics and risk factors for patients enrolled.

BUN, blood urea nitrogen; CABG, coronary artery bypass grafting; CAD, coronary artery disease; CHD, coronary heart disease; HDL-C, high-density lipoprotein cholesterol; LDL-C, low-density lipoprotein cholesterol; LVEF, left ventricular ejection fraction; MI, myocardial infarction; PCI, percutaneous coronary intervention; STEMI, ST-elevation myocardial infarction; ST, S wave T wave segment; TC, total cholesterol; TG, triglycerides

Characteristics	Group I (n = 143)	Group II (n = 110)	Group III (n = 205)	Test value	P value
Age ± SD (years)	53.42 ± 4.36	54.26 ± 8.26	54.39 ±7.37	0.915	.40
Men, n (%)	124 (86.71%)	95 (86.36%)	162 (79.02)	4.6	.1
HbA1c, mean ± SD	5.32 ± 0.32	5.91 ± 0.16	8.64 ± 0.85	1.49	< .001
Hypertension, n (%)	36 (25.17%)	48 (43.63%)	122 (59.51%)	30.5	.001
Smoking, n (%)	49 (34.26%)	62 (56.36%)	103 (50.24%)	14.04	.17
Dyslipidemia, n (%)	112 (78.32%)	97 (88.18%)	189 (92.20%)	14.45	.007
Prior MI, n (%)	23 (16.8%)	28 (25.45%)	37 (18.05%)	3.84	.14
Prior PCI, n (%)	18 (12.59%)	23 (20.91%)	46 (22.44%)	5.6	.06
Prior CABG, n (%)	8 (5.59%)	2 (1.82%)	14 (6.83%)	3.67	.15
Family history of CAD, n (%)	12 (8.39%)	29 (26.36%)	43 (20.98%)	15.12	.005
Type of CHD
Stable angina, n (%)	90 (62.93%)	60 (54.3%)	107 (52.0%)	4.09	.12
Unstable angina, n (%)	31 (21.67%)	24 (21.5%)	50 (24.2%)	0.45	.79
Non-STEMI, n (%)	13 (9.09%)	11 (10.1%)	27 (13.2%)	1.6	.44
STEMI, n (%)	10 (6.99%)	17 (15.1%)	22 (10.6%)	4.6	.09
ST-depression (> 1 mm), n (%)	17 (11.88%)	15 (13.2%)	33 (16.2%)	1.26	.53
LVEF (%) ± SD	55.24 ± 4.2	51.62 ± 6.4	47.87 ± 7.2	31.72	< .001
Lipid profile
TG, mmol/L	1.8 ± 1.1	1.7 ± 1.0	1.7 ± 1.1	0.42	.65
TC, mmol/L	4.3 ± 1.2	4.3 ± 1.1	4.4 ± 1.1	0.44	.64
HDL-C, mmol/L	1.1 ± 0.2	1.0 ± 0.3	1.1 ± 0.2	8.04	.001
LDL-C, mmol/L	2.3 ± 0.8	2.4 ± 0.9	2.6 ± 0.9	5.33	.005
BUN, mmol/L	5.8 ± 2.2	5.6 ± 2.0	5.8 ± 2.4	0.33	.70
Creatinine, µmol/L	74.2 ± 15.3	77.3 ± 12.6	75.2 ± 9.2	2.05	.13