Table 4.
Sensitivity analyses of the testing samples for detecting DR and STDR.
| Statistic | Analysis for Detecting DR | Analysis for Detecting STDR | ||||
|---|---|---|---|---|---|---|
| Value | Lower Bound (95%) | Upper Bound (95%) | Value | Lower Bound (95%) | Upper Bound (95%) | |
| Correct classification | 1.000 | 1.000 | 1.000 | 0.757 | 0.707 | 0.807 |
| Misclassification | 0.000 | 0.000 | 0.000 | 0.243 | 0.193 | 0.293 |
| Sensitivity | 1.000 | 0.968 | 1.000 | 0.532 | 0.392 | 0.666 |
| Specificity | 1.000 | 0.967 | 1.000 | 0.802 | 0.746 | 0.847 |
| False positive rate | 0.000 | 0.000 | 0.000 | 0.198 | 0.148 | 0.249 |
| False negative rate | 0.000 | 0.000 | 0.000 | 0.468 | 0.331 | 0.605 |
| Prevalence | 0.514 | 0.456 | 0.572 | 0.165 | 0.122 | 0.209 |
| Positive Predictive Value | 1.000 | 1.000 | 1.000 | 0.347 | 0.237 | 0.457 |
| Negative Predictive Value | 1.000 | 1.000 | 1.000 | 0.896 | 0.855 | 0.937 |
Abbreviations: DR—diabetic retinopathy; STDR—sight threatening diabetic retinopathy.