| Low risk | Intermediate risk | High risk | p |
Age (years) | 55.8 | 67.9 | 75.6 | <0.00001 |
Gender (% male) | 76% | 57% | 46% | <0.00001 |
COPD (% yes) | 6.9% | 15.6% | 25.6% | <0.00001 |
Extra-cardiac arteriopathy (% yes) | 1.0% | 2.8% | 16.4% | <0.00001 |
Neurological dysfunction (% yes) | 4.7% | 8.4% | 12.6% | <0.00001 |
Previous cardiac surgery (% yes) | 0% | 2.6% | 15.8% | <0.00001 |
Creatinine > 200 µg (% yes) | 0% | 1.2% | 4.5% | Low = Inter (0.06) Inter < High (0.0002) Low < High (<0.00001) |
LV function (% good, moderate, poor) | 94% 6% 0% | 87% 11% 2% | 75% 18% 7% | <0.00001 |
Recent MI (% yes) | 0.8% | 6.1% | 13.5% | <0.00001 |
Emergency surgery (% elective, urgent, emergency, salvage) | 91% 9% 0% 0% | 89% 10% 1% 0% | 79% 18% 3% 0% | Low = Inter (0.1467) Inter < High (<0.00001) Low < High (<0.00001) |