| Age, years |
62.5±13.1 |
64.8±11.8 |
0.95 |
| Male gender - no./total no. (%) |
717/915 (78.4) |
76/90 (84.4) |
0.18 |
| Clinical history - no./total no. (%) |
| Hypertension |
489/919 (53.3) |
47/91 (51.7) |
0.28 |
| Diabetes |
192/917 (20.9) |
21/91 (23.1) |
0.06 |
| Hyperlipidaemia |
429/915 (46.9) |
44/91 (48.4) |
0.27 |
| Current smoker |
415/913 (45.5) |
17/91 (18.7) |
<0.001 |
| Previous coronary artery disease |
119/916 (13.0) |
14/90 (15.6) |
0.04 |
| First medical contact – no./total no. (%) |
| Out-of-hospital emergency medical service |
417/913 (45.7) |
29/91 (31.9) |
<0.001 |
| Primary care centres |
189/913 (20.7) |
6/91 (6.6) |
| Non-PCI hospitals |
179/913 (19.6) |
24/91 (26.4) |
| PCI hospitals |
125/913 (13.7) |
30/91 (33.0) |
| N.A. |
3/913 (0.3) |
2/91 (2.2) |
| COVID-19 status on admission – no./total no. (%)* |
| Neither symptoms nor close contacts |
731/914 (80.0) |
16/91 (17.6) |
<0.001 |
| Symptoms of COVID-19 |
47/914 (5.1) |
29/91 (31.9) |
| Confirmed diagnosis |
0/914 (0) |
43/91 (47.3) |
| Unknown/not available |
136/914 (14.9) |
3/91 (3.3) |
| Reperfusion strategy at first medical contact – no./total no. (%) |
| PPCI |
838/919 (91.2) |
87/90 (96.7) |
0.19 |
| Fibrinolysis |
23/919 (2.5) |
3/90 (3.3) |
| Diagnosis doubt, hospital transfer for decision |
54/919 (5.9) |
0/90 (0) |
| Not available |
4/919 (0.4) |
0/90 (0) |
| Complications before PCI – no. (%) |
| Ventricular fibrillation |
55/919 (6.0) |
6/91 (6.8) |
0.82 |
| Asystole |
9/919 (1.0) |
1/91 (1.1) |
0.91 |
| Mechanical ventilation |
42/919 (4.6) |
6/91 (6.6) |
0.39 |
| Heart failure on admission – no./total no. (%) |
169/919 (18.4) |
29/91 (31.9) |
0.002 |
| Plus-minus values are means±SD. * All patients were eventually diagnosed with COVID-19 by PCR. PCI: percutaneous coronary intervention; PCR: polymerase chain reaction; PPCI: primary percutaneous coronary intervention |
