Table 5.
Mean and SD of model performance indicators in predicting labor in under or over 14 days using EHG characteristics, obstetric data or a combination of both. PPV: predictive positive value; NPV: predictive negative value.
| EHG | OBSTETRIC | EHG+OBSTETRIC | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Train | Validation | Test | Train | Validation | Test | Train | Validation | Test | |
| Accuracy | 81.2 ± 7.0 | 75.4 ± 7.1 | 65.6 ± 5.6 | 81.3 ± 11.5 | 75.8 ± 11.5 | 70.4 ± 8.2 | 83.6 ± 3.7 | 78.9 ± 3.7 | 71.1 ± 5.7 |
| AUC | 86.4 ± 7.8 | 83.6 ± 7.3 | 71.1 ± 7.4 | 83.8 ± 10.7 | 81.8 ± 11.1 | 75.5 ± 8.2 | 89.5 ± 3.2 | 86.6 ± 3.1 | 76.2 ± 5.8 |
| F1-Score | 81.7 ± 4.9 | 75.3 ± 5.6 | 65.9 ± 5.7 | 82.1 ± 10.5 | 75.8 ± 11.8 | 70.8 ± 8.3 | 83.5 ± 3.9 | 76.5 ± 4.3 | 70.8 ± 6.9 |
| Sensibility | 83.0 ± 6.6 | 74.8 ± 11.3 | 67.6 ± 13.2 | 85 ± 12.2 | 77.1 ± 16.1 | 72.6 ± 12.9 | 87.6 ± 6.0 | 77.5 ± 8.7 | 70.8 ± 12 |
| Specificity | 79.3 ± 16.1 | 76.0 ± 14.2 | 63.6 ± 12.6 | 77.7 ± 17.9 | 74.4 ± 18.8 | 68.2 ± 17.0 | 83.7 ± 5.3 | 78.7 ± 9.3 | 70.0 ± 10.9 |
| PPV | 81.3 ± 4.6 | 78.4 ± 10.0 | 66.5 ± 6.4 | 80.2 ± 11.1 | 76.4 ± 11.8 | 70.6 ± 8.9 | 83.8 ± 4.5 | 78.8 ± 6.6 | 68.8 ± 6.9 |
| NPV | 95.5 ± 4.5 | 90.8 ± 5.2 | 62.9 ± 6.9 | 90.0 ± 8.4 | 88.8 ± 10.0 | 65.5 ± 7.4 | 83.8 ± 5.1 | 76.7 ± 5.0 | 68.8 ± 7.7 |