Table 3.

In-hospital mortality by PCI operator volume

	Unadjusted OR (95% CI)	Adjusted OR (95% CI)
All patients
Low vs. high volume	1.23 (1.19–1.28)	1.16 (1.12–1.21)
Intermediate vs. high volume	1.14 (1.11–1.18)	1.05 (1.02–1.09)
STEMI only
Low vs. high volume	1.07 (1.03–1.11)	1.13 (1.08–1.19)
Intermediate vs. high volume	1.01 (0.98–1.04)	1.03 (0.99–1.07)
NSTEMI/UA only
Low vs. high volume	1.11 (1.05–1.18)	1.20 (1.13–1.28)
Intermediate vs. high volume	1.06 (1.02–1.11)	1.07 (1.02–1.11)
Stable angina only
Low vs. high volume	1.14 (0.91–1.44)	1.31 (1.04–1.65)
Intermediate vs. high volume	1.12 (0.94–1.33)	1.15 (0.97–1.37)

OR, odds ratio; STEMI, ST segment elevation myocardial infarction; NSTEMI, non-ST segment elevation myocardial infarction; UA, unstable angina. Low volume operators had an annual PCI volume < 50; intermediate had an annual PCI volume 50–100, and high volume operators had an annual PCI volume > 100. Covariates for the adjusted model included all variables included in the CathPCI mortality risk score, which includes age, cardiogenic shock, prior heart failure (HF), peripheral vascular disease, chronic lung disease, eGFR, New York Heart Association class, and presentation with STEMI (versus no STEMI).