Table 4 Cumulative frequency of major cardiovascular events two years after percutaneous coronary intervention according to hospital volume of throughput, Scotland, 1997–2003.
| Low volume (<400 PCIs pa) | Medium volume (400–750 PCIs pa) | High volume (>750 PCIs pa) | p Value* | |
|---|---|---|---|---|
| n = 3756 | n = 10419 | n = 3242 | ||
| All‐cause death | 5.3 (0.4) | 5.2 (0.2) | 6.1 (0.5) | 0.322 |
| Acute myocardial infarction | 6.3 (0.4) | 5.5 (0.2) | 5.9 (0.5) | 0.113 |
| CABG | 8.8 (0.5) | 5.6 (0.2) | 3.8 (0.4) | <0.001 |
| PCI | 12.9 (0.6) | 15.3 (0.4) | 13.5 (0.8) | <0.001 |
| Coronary revascularisation | 20.4 (0.7) | 16.7 (0.8) | 16.7 (0.8) | <0.001 |
| Any event | 26.1 (0.7) | 25.3 (0.4) | 23.2 (0.9) | 0.001 |
Data are percentage (SE).
*Log rank test.
CABG, coronary artery bypass grafting; pa, per annum; PCI percutaneous coronary intervention.