Table 3.
Association Between the M-CARS and Resource Utilization on Univariate Logistic Regression
| Beta estimate (standard error) | Unit OR per 1-point increase in M-CARS (95% CI) | R2 | AUC | P value | |
|---|---|---|---|---|---|
| Respiratory support therapies | |||||
| Any ventilator | 0.707 (0.014) | 2.027 (1.973-2.082) | 0.279 | 0.833 | <.0001 |
| Invasive ventilator | 0.836 (0.017) | 2.308 (2.233-2.385) | 0.383 | 0.891 | <.0001 |
| Noninvasive ventilator | 0.270 (0.011) | 1.310 (1.283-1.339) | 0.057 | 0.703 | <.0001 |
| Hemodynamic support therapies | |||||
| Vasopressors | 0.559 (0.012) | 1.750 (1.708-1.792) | 0.212 | 0.792 | <.0001 |
| Inotropes | 0.290 (0.013) | 1.336 (1.303-1.371) | 0.062 | 0.701 | <.0001 |
| Any vasoactive drug | 0.520 (0.012) | 1.682 (1.644-1.720) | 0.184 | 0.773 | <.0001 |
| IABP | 0.314 (0.014) | 1.369 (1.333-1.406) | 0.073 | 0.695 | <.0001 |
| Coronary angiography | –0.107 (0.009) | 0.898 (0.883-.914) | 0.009 | 0.580 | <.0001 |
| PCI | –0.166 (0.010) | 0.847 (0.831-.864) | 0.019 | 0.609 | <.0001 |
| Invasive lines | |||||
| Any invasive line | 0.287 (0.010) | 1.332 (1.307-1.357) | 0.059 | 0.641 | <.0001 |
| Central line | 0.377 (0.011) | 1.458 (1.428-1.489) | 0.108 | 0.718 | <.0001 |
| Arterial line | 0.247 (0.009) | 1.280 (1.257-1.304) | 0.047 | 0.620 | <.0001 |
| PA catheter | 0.298 (0.013) | 1.347 (1.313-1.381) | 0.066 | 0.702 | <.0001 |
| Other support therapies | |||||
| Any dialysis | 0.377 (0.017) | 1.458 (1.410-1.508) | 0.099 | 0.768 | <.0001 |
| CRRT | 0.515 (0.027) | 1.673 (1.587-1.765) | 0.161 | 0.855 | <.0001 |
| Blood t ransfusion | 0.316 (0.012) | 1.372 (1.339-1.405) | 0.076 | 0.718 | <.0001 |
| Outcomes | |||||
| CICU death | 0.633 (0.019) | 1.884 (1.816-1.954) | 0.263 | 0.871 | <.0001 |
| Hospital death | 0.634 (0.016) | 1.885 (1.827-1.944) | 0.270 | 0.868 | <.0001 |
AUC, area under the curve; CI, confidence interval; CICU, cardiac intensive care unit; CRRT, continuous renal replacement therapy; IABP, intra-aortic balloon pump; M-CARS, Mayo Clinic Intensive Care Unit Admission Risk Score; OR, operating room; PA, pulmonary artery; PCI, percutaneous coronary intervention.