Table 3. Sensitivity and specificity of PNS radiograph compared to CT.
| Sinuses | Sensitivity % | Specificity % | Accuracy % | Disease prevalence % |
|---|---|---|---|---|
| Frontal | 61.5 | 96.9 | 92.7 | 11.8 |
| Ethmoid | 69.7 | 96.1 | 88.1 | 30 |
| Maxillary | 89.2 | 87 | 88.1 | 50.9 |
| Sphenoid | 41.1 | 100 | 90.9 | 15.4 |
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