Table 2.
ROC curve analysis for the four individual predictors and for the combination of VF-waveform predictors, MEtCO2 and CD when each one alone is significant. All features were significant with a p < 0.05, except MEtCO2 for all shocks (*), so MEtCO2 combinations for all shocks are not reported. The median(IQR) of the distributions are reported for the AUC, Se and Sp with the test set, after repeating training/test partitioning 100 times. The Se/Sp are given for the optimal point (Youden index)
| Data base |
||||||
|---|---|---|---|---|---|---|
| All shocks |
First shocks |
|||||
| AUC | Se (%) | Sp (%) | AUC | Se (%) | Sp (%) | |
| Univariate | ||||||
| AMSA | 0.75 (0.72 – 0.75) | 79.8 (71.4 – 85.5) | 63.2 (58.5 – 71.6) | 0.76 (0.72 – 0.82) | 82.1 (76.2 – 88.4) | 59.9 (52.9 – 64.7) |
| FuzzyEn | 0.75 (0.73 – 0.77) | 73.6 (67.1 – 78.8) | 69.4 (64.1 – 75.6) | 0.77 (0.73 – 0.82) | 83.0 (78.1 – 89.5) | 62.5 (58.8 – 70.6) |
| MEtCO2 | 0.54 (0.51 – 0.57)* | 48.1 (42.0 – 69.3) | 66.1 (43.3 – 72.1) | 0.66 (0.60 – 0.71) | 69.1 (57.9 – 86.5) | 53.0 (38.3 – 64.7) |
| CD | 0.58 (0.56 – 0.60) | 56.2 (34.6 – 75.7) | 62.7 (42.2 – 82.8) | 0.65 (0.61 – 0.72) | 76.9 (53.8 – 92.3) | 58.8 (35.3 – 85.3) |
| Multivariate | ||||||
| AMSA+CD | 0.75 (0.73 – 0.77) | 78.5 (72.1 – 84.3) | 63.7 (59.2 – 70.3) | 0.76 (0.72 – 0.81) | 69.2 (61.5 – 84.6) | 82.4 (70.6 – 88.2) |
| AMSA+MEtCO2 | - | - | - | 0.79 (0.75 – 0.85) | 85.1 (81.2 – 89.8) | 60.7 (52.9 – 67.6) |
| AMSA+MEtCO2 +CD | - | - | - | 0.82 (0.77 – 0.86) | 92.3 (84.6 – 96.2) | 70.6 (64.7 – 82.4) |
| FuzzyEn+CD | 0.76 (0.73 – 0.78) | 79.5 (75.8 – 82.2) | 65.1 (60.6 – 69.2) | 0.80 (0.74 – 0.85) | 84.6 (76.9 – 92.3) | 76.5 (70.6 – 82.4) |
| FuzzyEn+MEtCO2 | - | - | - | 0.83 (0.78 – 0.88) | 85.9 (80.5 – 91.6) | 65.4 (58.8 – 70.6) |
| FuzzyEn+MEtCO2 +CD | - | - | - | 0.83 (0.78 – 0.88) | 84.6 (76.9 – 92.3) | 82.4 (70.6 – 88.2) |