Table 1 Dichotomous variables entered in the score model
Acronym | Description | Training N (%) | Testing N (%) |
|---|---|---|---|
O2ER | O2 extraction ratio ≥40% | 116 (21.3%) | 129 (23.7%) |
Card-ID | Cardiac inotropic drugs | 74 (13.6%) | 69 (12.7%) |
PVD | Peripheral vascular disease | 116 (21.3%) | 104 (19.1%) |
EM | Emergency | 45 (8.3%) | 48 (8.8%) |
VCO2 | CO2 production <180 ml/min | 256 (47.0%) | 261 (47.9%) |
CPBt | Cardio-pulmonary bypass time ≥2 hours | 223 (40.9%) | 203 (37.2%) |
AD | Anti-arrhythmic drugs | 29 (5.3%) | 27 (5.0%) |
IABP | Intra aortic balloon pump | 11 (2.0%) | 10 (1.8%) |
MVR | Mitral valve replaced with artificial valve | 8 (1.5%) | 12 (2.2%) |
CHF | Congestive heart failure | 25 (4.6%) | 30 (5.5%) |
MR | Mitral valve repaired surgically | 12 (2.2%) | 8 (1.5%) |