Table 1: Demographic and clinical features of patients.

VariableIntervention group
( 𝑛 = 1 9 7 )
Historical control group
( 𝑛 = 4 0 5 )
𝜒 2 (Z) 𝑃 value

Male gender149 (75.6)308 (76.0)0.010.91
Age (yrs)63.42 ± 11.8763.89 ± 13.20−0.490.63
Hypertension109 (55.3)214 (52.8)0.330.57
Diabetes37 (18.8)55 (13.6)2.770.10
Hyperlipidemia58 (29.4)65 (16.0)5.880.02
Previous coronary disease14 (7.1)22 (5.4)0.660.42
Previous stroke 20 (10.2)34 (8.4)0.010.93
Current smoker106 (53.8)196 (48.4)4.960.03
Family history of coronary disease 16 (8.1)65 (16.0)10.130.00
Clinical pattern
 STEMI176 (89.3)338 (87.1)0.610.44
 NSTEMI21 (10.7)50 (12.9)
Cardiac function (Killips classification)
 Level I 99 (64.7)275 (69.1)−0.960.34
 Level II 31 (20.3)70 (17.6)
 Level III 10 (6.5)23 (5.8)
 Level IV 13 (8.5)30 (7.5)
 Intravenous thrombolysis8 (4.1)27 (6.7)1.640.20
 Emergency PCI189 (95.9)378 (93.3)
Vascular lesions
 Single64 (34.0)102 (30.0)−0.370.72
 Two branch56 (29.8)116 (34.1)
 Three branch65 (34.6)122 (35.9)
 Stenosis < 50%3 (1.6)0 (0.0)
Stent implantation1.19 ± 0.631.25 ± 0.90−0.110.92

Values are given as number of patients (%) or mean ± SD.
STEMI: ST-segment elevation myocardial infarction; NSTEMI: non-ST-segment elevation myocardial infarction.
PCI: percutaneous coronary intervention.