Hospital characteristics (n=10 hospitals)
| n | % | |
| Census region | ||
| South | 3 | 30 |
| Northeast | 1 | 10 |
| Midwest | 4 | 40 |
| West | 2 | 20 |
| Teaching status | ||
| Teaching | 2 | 20 |
| Non-teaching | 8 | 80 |
| Beds | ||
| 100–299 | 2 | 20 |
| 300–499 | 3 | 30 |
| 500+ | 5 | 50 |
| AMI cases per year | ||
| 200–399 | 5 | 50 |
| 400–599 | 2 | 20 |
| 600–799 | 3 | 30 |
AMI, acute myocardial infarction.