Use of treatments, procedures and tests among patients with STEMI
| 2011 | 2015 | P value | |||
| Relative frequency | % (95% CI) | Relative frequency | % (95% CI) | ||
| Reperfusion therapies | |||||
| Any reperfusion* | 1769/3278 | 54 (52.3 to 55.7) | 1793/3005 | 59.7 (57.9 to 61.4) | <0.0001 |
| Primary PCI* | 691/3278 | 21.1 (19.7 to 22.5) | 1014/3005 | 33.7 (32.1 to 35.4) | <0.0001 |
| Fibrinolytic therapy* | 1078/3278 | 32.9 (31.3 to 34.5) | 779/3005 | 25.9 (24.4 to 27.5) | <0.0001 |
| Acute drugs | |||||
| Aspirin within 24 hours* | 5904/6490 | 91 (90.3 to 91.7) | 6354/6924 | 91.8 (91.1 to 92.4) | 0.1002 |
| Clopidogrel or ticagrelor within 24 hours* | 5069/6498 | 78 (77 to 79) | 6298/6964 | 90.4 (89.7 to 91.1) | <0.0001 |
| β blockers within 24 hours* | 1846/3106 | 59.4 (57.7 to 61.2) | 1969/3379 | 58.3 (56.6 to 59.9) | 0.3423 |
| Statins*† | 6045/6642 | 91 (90.3 to 91.7) | 6711/7118 | 94.3 (93.7 to 94.8) | <0.0001 |
| ACE inhibitors or angiotensin receptor blockers*† | 4224/6440 | 65.6 (64.4 to 66.8) | 4028/6803 | 59.2 (58 to 60.4) | <0.0001 |
| Traditional Chinese medicine† | 4827/6643 | 72.7 (71.6 to 73.7) | 5101/7118 | 71.7 (70.6 to 72.7) | 0.1912 |
| Magnesium sulfate† | 1159/6643 | 17.4 (16.5 to 18.4) | 1477/7118 | 20.8 (19.8 to 21.7) | <0.0001 |
| Stents†‡ | |||||
| Drug-eluting stents only | 1436/1466 | 98 (97.2 to 98.7) | 1974/1985 | 99.4 (99.1 to 99.8) | 0.0001 |
| Bare metal stents only | 28/1466 | 1.9 (1.2 to 2.6) | 11/1985 | 0.6 (0.2 to 0.9) | 0.0002 |
| Both | 2/1466 | 0.1 (−0.1 to 0.3) | 0/1985 | 0 (0 to 0) | 0.0997 |
| Procedures† | |||||
| Coronary angiography | 2204/6643 | 33.2 (32 to 34.3) | 3239/7118 | 45.5 (44.3 to 46.7) | <0.0001 |
| PCI (non-primary) | 1077/6643 | 16.2 (15.3 to 17.1) | 1237/7118 | 17.4 (16.5 to 18.3) | 0.0676 |
| Coronary artery bypass graft | 30/6643 | 0.5 (0.3 to 0.6) | 5/7118 | 0.1 (0 to 0.1) | <0.0001 |
| Intra-aortic balloon pump | 137/6643 | 2.1 (1.7 to 2.4) | 110/7118 | 1.5 (1.3 to 1.8) | 0.0225 |
| Tests† | |||||
| Troponin | 4195/6643 | 63.1 (62 to 64.3) | 5695/7118 | 80 (79.1 to 80.9) | <0.0001 |
| Cardiac enzymes | 6443/6643 | 97 (96.6 to 97.4) | 6407/7118 | 90 (89.3 to 90.7) | <0.0001 |
| Echocardiogram | 4191/6643 | 63.1 (61.9 to 64.2) | 5129/7118 | 72.1 (71 to 73.1) | <0.0001 |
Data are n/N or % (95% CI), for which n is the number of patients in the study sample and % is a nationally representative rate, unless otherwise stated.
*Only among patients eligible for the treatment (ie, patients with no documented contraindications).
†During hospital admission.
‡Among patients who received at least one stent.
PCI, percutaneous coronary intervention; STEMI, ST segment elevation myocardial infarction.