Table 3 Evaluation of model performance in detecting “Pathology” chest radiographs
Pathology | Not pathology | Total | |
Classified as “Pathology” | 251 (true positive) | 81 (false positive) | 332 |
Not classified as “Pathology” | 81 (false negative) | 224 (true negative) | 305 |
Total | 332 | 305 | |
Statistics | Value | 95% confidence interval | |
Sensitivity | 75.60% | 70.62 to 80.13% | |
Specificity | 73.44% | 68.11 to 78.31% | |
Positive likelihood ratio | 2.85 | 2.34 to 3.46 | |
Negative likelihood ratio | 0.33 | 0.27 to 0.41 | |
Positive predictive value | 75.60% | 71.80 to 79.04% | |
Negative predictive value | 73.44% | 69.34 to 77.18% | |
Accuracy | 74.57% | 71.00 to 77.91% | |