Characteristics of patients with STEMI in 2011 and 2015
| 2011 (n=7696) | 2015 (n=8111) | P value | |
| Demographics | |||
| Age (years) | 65 (55–75) | 65 (55–74) | 0.9 |
| Women | 2247 (29.2) | 2311 (28.5) | 0.3 |
| Cardiovascular risk factors | |||
| Hypertension | 3890 (50.5) | 4197 (51.7) | 0.1 |
| Diabetes | 1558 (20.2) | 1818 (22.4) | 0.0009 |
| Dyslipidaemia | 4843 (62.9) | 6452 (79.5) | <0.0001 |
| Current smoker | 2854 (37.1) | 2853 (35.2) | 0.01 |
| Clustering of risk factors | |||
| ≥3 | 1612 (20.9) | 2027 (25) | <0.0001 |
| 2 | 2878 (37.4) | 3360 (41.4) | <0.0001 |
| 1 | 2357 (30.6) | 2275 (28) | 0.0004 |
| None | 849 (11) | 449 (5.5) | <0.0001 |
| Medical history | |||
| Myocardial infarction | 814 (10.6) | 569 (7) | <0.0001 |
| Coronary heart disease | 1568 (20.4) | 1897 (23.4) | <0.0001 |
| PCI | 180 (2.3) | 251 (3.1) | 0.004 |
| Coronary artery bypass graft | 21 (0.3) | 14 (0.2) | 0.2 |
| Stroke | 897 (11.7) | 1022 (12.6) | 0.07 |
| Clinical characteristics | |||
| Symptom onset to admission (hours) | 12 (3–72) | 24 (4–96) | <0.0001 |
| Chest discomfort | 7118 (92.5) | 7478 (92.2) | 0.5 |
| Left bundle branch block | 97 (1.3) | 65 (0.8) | 0.004 |
| Cardiac arrest | 125 (1.6) | 104 (1.3) | 0.07 |
| Cardiogenic shock | 508 (6.6) | 630 (7.8) | 0.005 |
| Acute stroke | 83 (1.1) | 217 (2.7) | <0.0001 |
| Heart rate (beats per minute) | |||
| <50 | 384 (5) | 306 (3.8) | 0.0002 |
| 50–110 | 6917 (89.9) | 7278 (89.7) | 0.8 |
| >110 | 395 (5.1) | 527 (6.5) | 0.0003 |
| Heart rate | 76 (65–89.5) | 78 (66–90) | 0.0009 |
| Systolic blood pressure (mm Hg) | |||
| <90 | 408 (5.3) | 430 (5.3) | >0.9 |
| 90–139 | 4658 (60.5) | 5017 (61.9) | 0.09 |
| ≥140 | 2630 (34.2) | 2664 (32.8) | 0.08 |
| Mini-GRACE risk score | 142 (122–160) | 141 (120–160) | 0.06 |
Data are median (IQR) or n (%), for which n is the number of patients in the study sample and % is a nationally representative rate.
GRACE, Global Registry of Acute Coronary Events; PCI, percutaneous coronary intervention; STEMI, ST segment elevation myocardial infarction.