Table 4 Performance on test sets using gait metrics from the electronic walkway (in %)
Condition | SS | DAn | DS1 | DS7 | F | DAn + SSa) | DS1 + SSa) | DS7 + SSb) | F + SSb) |
|---|---|---|---|---|---|---|---|---|---|
Classifier | LR | SVM | LR | SVM | RF | SVM | SVM | SVM | LR |
Feature Sel. | RFE | RFE | RFE | None | RF | None | KBest | RF | RFE |
Sampling | SMOTE | SMOTE | None | SMOTE | None | None | None | SMOTE | SMOTE |
# Features | 2.0 ± 2.2 | 3.2 ± 2.2 | 2.2 ± 1.8 | 12.0 ± 0.0 | 6.0 ± 0.8 | 12.0 ± 0.0 | 1.7 ± 2.1 | 8.6 ± 1.3 | 2.8 ± 2.1 |
Bal. Acc. | 76.8 | 75.1 | 71.6 | 77.5 | 60.5 | 74.0 | 78.8 | 75.1 | 69.5 |
Sensitivity | 75.9 | 72.4 | 65.5 | 82.8 | 65.5 | 75.9 | 96.6 | 72.4 | 72.4 |
Specificity | 77.8 | 77.8 | 77.8 | 72.2 | 55.6 | 72.2 | 61.1 | 77.8 | 66.7 |
F1 score | 80.0 | 77.8 | 73.1 | 82.8 | 67.9 | 78.6 | 87.5 | 77.8 | 75.0 |
AUC | 75.3 | 75.9 | 69.2 | 79.5 | 54.8 | 73.9 | 68.6 | 72.4 | 67.2 |