Table 6. In-hospital outcomes by PCI case-volume.
Variables | All (n=44967) | Low-tertile volume centers [41–493]* (n=15105) | Mid-tertile volume centers [494–780]* (n=15286) | High-tertile volume centers [781–1794]* (n=14576) | p |
---|---|---|---|---|---|
Death | 1023 (2.28) | 403 (2.67) | 352 (2.30) | 268 (1.84) | <0.001 |
Cardiac death | 704 (1.57) | 274 (1.81) | 240 (1.57) | 190 (1.30) | 0.001 |
Nonfatal myocardial infarction | 701 (1.56) | 260 (1.72) | 237 (1.55) | 204 (1.40) | 0.171 |
Stent thrombosis | 172 (0.38) | 86 (0.57) | 59 (0.39) | 27 (0.19) | <0.001 |
Stroke | 90 (0.20) | 32 (0.21) | 30 (0.20) | 28 (0.19) | 0.984 |
Urgent re-PCI | 118 (0.26) | 38 (0.25) | 60 (0.39) | 20 (0.14) | <0.001 |
Transfusion | 978 (2.17) | 246 (1.63) | 338 (2.21) | 394 (2.70) | <0.001 |
Values are presented as number (%). *Centers were divided into three tertiles based on PCI case-volume (1st tertile: 41-493; 2nd tertile: 494-780; 3rd tertile: 781-1794). PCI: percutaneous coronary intervention