| Participants (n = 7 sites) | Non-participants (n = 73 sites)* |
---|---|---|
Interventional cardiologists (mean, SD) | 4.7 (0.8) | 3.7 (1.9) |
Diagnostic case volume (mean, SD) | 595 (226) | 410 (219) |
 % TRA (mean, range) | 27% (2.5–64%) | 54% (0–93%) |
PCI volume (mean, SD) | 230 (139) | 126 (934) |
 % TRA (mean, range) | 22% (2–44%) | 46% (0–95%) |
Facility bed size (mean, SD) | 135 (66) | 103 (42) |
Academic affiliation (n, %) | 7 (100%) | 73 (100%) |
Onsite surgical backup (n, %) | 4 (57%) | 37 (51%) |