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. 2017 May 25;47(3):328–340. doi: 10.4070/kcj.2017.0071

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