Table 2.
Predictive accuracies using the 6 biomarkers.
| Unit of Prediction | Training Set | Test Set | ToxPi Threshold Used | Total Number of Biosets or Chemicals Examined | TP | TN | FP | FN | Sensitivity | Specificity | PPV | NPV | Balanced Accuracy |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Bioset | TG-GATES Training | TG-GATES Test | 0.4765 | 270 | 70 | 186 | 6 | 8 | 0.897 | 0.969 | 0.921 | 0.959 | 0.933 |
| Chemical | TG-GATES Training | TG-GATES Test | 0.4765 | 37 | 9 | 24 | 4 | 0 | 1.000 | 0.857 | 0.692 | 1.000 | 0.929 |
| Bioset | TG-GATES All | DrugMatrix GE Healthcare | 0.4765 | 179 | 74 | 55 | 44 | 6 | 0.925 | 0.556 | 0.627 | 0.902 | 0.740 |
| Chemical | TG-GATES All | DrugMatrix GE Healthcare | 0.4765 | 88 | 35 | 24 | 29 | 0 | 1.000 | 0.453 | 0.547 | 1.000 | 0.726 |
| Bioset | DrugMatrix GE Healthcare | TG-GATES All | 0.6329 | 562 | 119 | 402 | 10 | 31 | 0.793 | 0.976 | 0.922 | 0.928 | 0.885 |
| Chemical | DrugMatrix GE Healthcare | TG-GATES All | 0.6329 | 75 | 17 | 51 | 6 | 1 | 0.944 | 0.895 | 0.739 | 0.981 | 0.920 |
Unit refers to the comparisons used to determine the balanced accuracies. ToxPi thresholds were calculated using receiver-operating curves as described in the Methods.