Table 1 Baseline characteristics for the total sample and stratified 28-day survival

Age (mean, SD)

63.5 (11.9)

63.1 (11.9)

69.5 (10.7)

0

Male

291 (73.1)

272 (73.5)

19 (67.9)

0

Comorbidities

 Hypertension

303 (76.1)

279 (75.4)

24 (85.7)

0

 Diabetes mellitus

107 (26.9)

97 (26.2)

10 (35.7)

0

 Hyperlipidemia

219 (55)

208 (56.2)

11 (39.3)

0

 BMI (kg/m²)

26.8 (24.3–29.9)

26.9 (24.4–29.8)

26.8 (24.1–30.3)

24

 BMI > 30 kg/m²

88 (23.5)

84 (23.2)

4 (33.3)

24

Smoking status

25

 Current smoker

157 (42.1)

149 (41.4)

8 (61.5)

 Ex-smoker

106 (28.4)

103 (28.6)

3 (23.1)

 Never smoker

110 (29.5)

108 (30)

2 (15.4)

Clinical characteristics

 Prehospital time in minutes (median, IQR)

115 (198)

120 (212.5)

77.5 (57)

29

 Prehospital cardiac arrest

24 (6.2)

17 (4.7)

7 (26.9)

11

 Systolic blood pressure at admission (median, IQR)

140 (125–160)

144.0 (129.25–160)

127.5 (93.5–140)

0

 Diastolic blood pressure at admission (median, IQR)

80 (68.5–95.5)

80 (70–96)

67 (60–72.5)

3

 Heart rate at admission

(median, IQR)

76 (66–89)

76 (66–88.25)

80 (64.5–90)

3

Left ventricular EF

16

 > 50%

180 (47.1)

172 (47.8)

8 (36.4)

 41–50%

85 (22.3)

83 (23.1)

2 (9.1)

 31–40%

88 (23)

84 (23.3)

4 (18.2)

  ≤ 30%

29 (7.6)

21 (5.8)

8 (36.4)

Kidney function

 < 0.001

0

 eGFR ≥ 60 ml/min/1.73 m2

275 (69.1)

266 (71.9)

9 (32.1)

-

 eGFR 30—59 ml/min/1.73 m2

109 (27.4)

91 (24.6)

18 (64.3)

-

 eGFR < 30 ml/min/1.73 m2

14 (3.5)

13 (3.5)

1 (3.6)

-

Treatment

 PCI

363 (91.2)

340 (91.9)

23 (82.1)

0

 Bypass therapy

36 (9.7)

36 (9.7)

5 (17.9)

0

 Lysis therapy

3 (0.8)

2 (0.5)

1 (3.6)

0

Laboratory values

 Troponin I at admission* (median, IQR)

0.59 (0.09–5.91)

0.56 (0.09–4.975)

3.41 (0.2875–12.275)

7

 peak CRP (median, IQR)

0.38 (0.29–1.0325)

0.370 (0.29–0.975)

0.575 (0.29–1.5425)

2