Table 6 Performance of the classification models: development and validation sets
From: Stratification of the severity of critically ill patients with classification trees
DEVELOPMENT (n = 1880) | ||||||
|---|---|---|---|---|---|---|
Models | AUC (CI 95%) | HL-C | Brier | PPV (CI 95%) | PCC (CI 95%) | SMR (CI 95%) |
APACHE II | 0.81 (0.79 - 0.83) | 68.2 | 0.17 | 0.72 (0.66 - 0.78) | 0.75 (0.73 - 0.77) | 1.30 (1.23 - 1.37) |
SAPS II | 0.82 (0.80 - 0.84) | 77.2 | 0.16 | 0.74 (0.68 - 0.79) | 0.74 (0.68 - 0.75) | 1.31 (1.24 - 1.38) |
MPM II 24 | 0.81 (0.79 - 0.83) | 74.2 | 0.16 | 0.75 (0.70 - 0.80) | 0.77 (0.75 - 0.79) | 1.29 (1.22 - 1.36) |
Logistic R | 0.83 (0.81 - 0.85) | 16.8 | 0.16 | 0.75 (0.70 - 0.80) | 0.77 (0.76 - 0.79) | 1.00 (0.92 - 1.10) |
CART | 0.78 (0.76 - 0.80) | ------ | 0.17 | 0.67 (0.61 - 0.72) | 0.75 (0.73 - 0.77) | 1.00 (0.94 - 1.06) |
CHAID | 0.80 (0.78 - 0.82) | ------ | 0.16 | 0.68 (0.63 - 0.73) | 0.75 (0.73 - 0.77) | 1.00 (0.93 - 1.08) |
C4.5 | 0.80 (0.78 - 0.82) | ------ | 0.16 | 0.69 (0.65 - 0.74) | 0.78 (0.76 - 0.80) | 1.00 (0.94 - 1.06) |
VALIDATION (n = 804) | ||||||
APACHE II | 0.77 (0.74 - 0.81) | 74.1 | 0.18 | 0.69 (0.60 - 0.70) | 0.73 (0.70 - 0.76) | 1.36 (1.26 - 1.47) |
SAPS II | 0.79 (0.76 - 0.83) | 78.3 | 0.18 | 0.71 (0.63 - 0.78) | 0.74 (0.71 - 0.77) | 1.39 (1.28 - 1.49) |
MPM II 24 | 0.79 (0.75 - 0.82) | 66.9 | 0.18 | 0.71 (0.63 - 0.78) | 0.74 (0.71 - 0.77) | 1.36 (1.25 - 1.46) |
Logistic R | 0.81 (0.78 - 0.84) | 41.5 | 0.17 | 0.73 (0.66 - 0.81) | 0.75 (0.73 - 0.78) | 1.22 (1.16 - 1.29) |
CART | 0.75 (0.71 - 0.81) | ------ | 0.18 | 0.64 (0.57 - 0.72) | 0.72 (0.69 - 0.75) | 1.04 (0.95 - 1.31) |
CHAID | 0.76 (0.72 - 0.79) | ------ | 0.18 | 0.64 (0.56 - 0.72) | 0.72 (0.69 - 0.75) | 1.06 (0.97 - 1.15) |
C4.5 | 0.76 (0.73 - 0.80) | ------ | 0.18 | 0.70 (0.63 - 0.76) | 0.76 (0.73 - 0.79) | 1.08 (0.98 - 1.16) |