Table 1 Baseline characteristics of patients

Number of patients (n, %)

3295

2758 (83.7)

537 (16.3)

Age (years)

61 (48, 71)

64 (55, 74)

57 (43, 70)

< 0.001

Sex (male)

2483 (75.4)

2165 (78.5)

318 (59.2)

< 0.001

Risk factors

 Hypertension

1688 (51.2)

1567(56.8)

121 (22.5)

< 0.001

 Hypercholesterolemia

930 (28.2)

880 (31.9)

50 (9.3)

< 0.001

 Diabetes mellitus

682 (20.7)

646 (23.4)

26 (4.8)

< 0.001

 Current smoking

1519 (46.1)

1288 (46.7)

231 (43.2)

0.069

 History of smoking

1770 (53.7)

1497(54.3)

273 (50.8)

0.076

History

 Family history of CAD

82 (2.6)

77 (2.8)

5 (0.87)

< 0.001

 Prior CAD

758 (23.0)

723 (26.2)

35 (6.5)

< 0.001

Vital status

 Heart rate (bpm)

76 (64, 88)

79 (66, 94)

74 (63, 84)

< 0.001

 Systolic blood pressure (mmHg)

125 (115, 137)

143 (129, 162)

119 (114, 132)

< 0.001

 Diastolic blood pressure (mmHg)

81 (71, 93)

85 (76, 94)

73 (68, 82)

< 0.001

Hs-cTnI (ng mL⁻¹)

19.43 (1.38, 48.60)

20.91 (2.46, 48.03)

0.57 (0.16, 0.44)

< 0.001

Time from symptom onset (h)

 < 6 (n, %)

1267 (38.5)

1063 (38.5)

204 (38.0)

0.977

 ≥ 6 (n, %)

2028 (61.5)

1695 (61.5)

333 (62.0)

0.976