Table 6. Sensitivity, specificity, positive predictive value, and negative predictive value of Model 1 and Model 2, by types of images used.
| Model 1 | Model 2 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Evaluation set | Species | Se (%) | Sp (%) | PPV (%) | NPV (%) | Se (%) | Sp (%) | PPV (%) | NPV (%) |
| Microscope images | AL | 57.1 | 50.0 | 44.4 | 62.5 | 85.7 | 87.5 | 85.7 | 87.5 |
| TT | 100.0 | 91.0 | 80.0 | 100.0 | 100.0 | 100.0 | 100.0 | 100.0 | |
| H | 0.0 | 80.0 | 0.0 | 61.5 | 66.7 | 100.0 | 100.0 | 80.0 | |
| UVC images | AL | 0.0 | N/A | N/A | N/A | 68.5 | 40.0 | 92.5 | 10.5 |
| TT | 0.0 | N/A | N/A | N/A | 8.3 | 96.9 | 50.0 | 73.8 | |
| H | 0.0 | N/A | N/A | N/A | 100.0 | 100.0 | 100.0 | 100.0 | |
| All images | AL | 0.0 | N/A | N/A | N/A | 69.6 | 61.1 | 92.0 | 23.9 |
| TT | 0.0 | N/A | N/A | N/A | 15.4 | 97.8 | 66.7 | 80.0 | |
| H | 0.0 | N/A | N/A | N/A | 71.4 | 100.0 | 100.0 | 96.2 | |
AL, A. lumbricoides; H, hookworm; N/A, not applicable; NPV, negative predictive value; PPV, positive predictive value; Se, sensitivity; Sp, specificity; TT, T. trichiura.
Model 1 failed to identify any eggs in UVC images.