Coronary anatomy, ejection fraction and smoking status, by treatment after angiography and First Nations status
| Variable | CABG | PCI | Medical management | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Non–First Nations, % (n = 4 179) | First Nations, % (n = 108) | p value | Non–First Nations, % (n = 17 503) | First Nations, % (n = 381) | p value | Non–First Nations, % (n = 7 970) | First Nations, % (n = 217) | p value | |
| Coronary anatomy | 0.7 | 0.02 | 0.002 | ||||||
| Normal | 0.2 | 0.0 | 0.3 | 1.3 | 7.8 | 14.7 | |||
| Minimal disease* | 0.3 | 0.0 | 0.8 | 0.5 | 13.1 | 14.3 | |||
| Low risk | 10.7 | 14.8 | 64.0 | 64.3 | 40.5 | 42.9 | |||
| High risk | 58.8 | 60.2 | 31.9 | 29.4 | 29.6 | 19.8 | |||
| Left main | 29.4 | 25.0 | 2.2 | 3.1 | 7.9 | 7.4 | |||
| Missing | 0.6 | 0.0 | 0.6 | 1.3 | 1.2 | 0.9 | |||
| Ejection fraction, % | 0.4 | 0.001 | 0.07 | ||||||
| > 50 | 45.7 | 45.4 | 53.1 | 46.7 | 52.9 | 47.0 | |||
| 35–50 | 32.6 | 35.2 | 27.5 | 26.5 | 24.8 | 22.6 | |||
| < 35 | 9.5 | 12.0 | 4.8 | 8.7 | 9.2 | 12.0 | |||
| Ventriculogram not done | 8.2 | 3.7 | 9.3 | 12.1 | 7.9 | 10.1 | |||
| Missing | 4.0 | 3.7 | 5.4 | 6.0 | 5.2 | 8.3 | |||
| Smoking status | < 0.001 | < 0.001 | < 0.001 | ||||||
| No smoking | 34.5 | 17.6 | 34.9 | 17.8 | 37.9 | 22.1 | |||
| Prior smoking | 34.0 | 32.4 | 27.0 | 19.2 | 31.2 | 22.1 | |||
| Present smoking | 31.5 | 50.0 | 38.1 | 63.0 | 31.0 | 55.8 | |||
Note: CABG = coronary artery bypass grafting, PCI = percutaneous coronary intervention.
↵* Defined as a lesion with less than 50% stenosis.