Table 2. Comparison of general clinical data between the study group and the control group.

Parameter	Study group (n=315)	Control group (n=220)	t/χ2 value	P-value
Age (years, $\overline{\text{x}}\pm \text{s}$)	61.75±10.25	62.05±9.78	0.339	0.734
Gender [Male, n(%)]	218 (69.21%)	150 (68.18%)	0.063	0.801
BMI (kg/m2, $\overline{\text{x}}\pm \text{s}$)	23.35 ± 4.54	23.61 ± 4.19	0.662	0.508
Hypertension [n (%)]	226 (71.75%)	127 (57.73%)	11.3417.	0.001
Smoking [n (%)]	119 (37.78%)	40 (18.18%)	23.814	0.000
Drinking [n (%)]	75 (23.81%)	42 (19.09%)	1.688	0.194
Systolic pressure (mmHg)	156.54 ± 20.65	142.31 ± 19.87	7.965	<0.001
Diastolic pressure (mmHg)	88.54 ± 11.35	83.05 ± 12.04	5.369	<0.001
Triglyceride (mmol/l)	1.25 ± 1.22	1.21 ± 1.36	0.356	0.722
Fasting blood-glucose (mmol/l)	6.54 ± 2.21	5.74 ± 1.93	4.442	<0.001
High-density lipoprotein (mmol/l)	1.28 ± 0.41	1.31 ± 0.46	0.792	0.429
Low-density lipoprotein (mmol/L)	2.54 ± 0.81	2.49 ± 0.79	0.710	0.478
Fibrin (g/l)	3.49 ± 1.04	3.43 ± 1.54	0.503	0.615
Homocysteine (μmol/l)	14.76 ± 5.98	11.79 ± 5.42	5.872	<0.001
Type 2 diabetes [n (%)]	53 (16.83%)	44 (20.00%)	0.879	0.348