Characteristics of patients with acute myocardial infarction who received cardiac catheterization, percutaneous coronary intervention or coronary artery bypass grafting between 2003 and 2013 in Ontario and the United States
| Characteristic | No. (%) of patients* | |
|---|---|---|
| Ontario n = 112 484 | United States n = 414 216 | |
| Male sex | 60 921 (54.2) | 207 968 (50.2) |
| Age category, yr | ||
| 66–70 | 20 223 (18.0) | 75 202 (18.2) |
| 71–75 | 21 584 (19.2) | 79 364 (19.2) |
| 76–80 | 23 725 (21.1) | 83 816 (20.2) |
| 81–85 | 23 306 (20.7) | 81 194 (19.6) |
| 86–90 | 15 757 (14.0) | 60 094 (14.5) |
| 91–99 | 7889 (7.0) | 34 546 (8.3) |
| Predicted risk of 30-day mortality, % | ||
| Mean ± SD | 13.75 ± 15.04 | 13.57 ± 10.32 |
| Risk group | ||
| Low (< 10%) | 64 374 (57.2) | 191 419 (46.2) |
| Medium (10%–20%) | 26 930 (23.9) | 141 434 (34.1) |
| High (> 20%) | 21 180 (18.8) | 81 363 (19.6) |
| Year of index event | ||
| 2003† | 8771 (7.8) | 48 007 (11.6) |
| 2004 | 11 511 (10.2) | 45 845 (11.1) |
| 2005 | 11 111 (9.9) | 43 166 (10.4) |
| 2006 | 10 182 (9.1) | 39 844 (9.6) |
| 2007 | 10 181 (9.1) | 37 622 (9.1) |
| 2008 | 10 689 (9.5) | 36 241 (8.8) |
| 2009 | 9738 (8.7) | 33 577 (8.1) |
| 2010 | 10 108 (9.0) | 33 651 (8.1) |
| 2011 | 9877 (8.8) | 33 021 (8.0) |
| 2012 | 10 087 (9.0) | 32 554 (7.9) |
| 2013 | 10 229 (9.1) | 30 688 (7.4) |
| AMI type‡ | ||
| STEMI | 16 388 (23.9) | 100 802 (24.3) |
| Non-STEMI | 50 667 (74.0) | 313 414 (75.7) |
| Missing | 1456 (2.1) | 0 (0.0) |