Table 9 Sensitivity and specificity of various combinations of clinical methods as comparing to silicosis defined as chest CT detected opacities
| Â | All CT opacities | Only RO | Only GGO | |||
|---|---|---|---|---|---|---|
Sensitivity | Specificity | Sensitivity | Specificity | Sensitivity | Specificity | |
Any clinical abnormality | Â | Â | Â | Â | Â | Â |
 Symptom | 58.3 | 75.0 | 44.4 | 54.6 | 66.7 | 72.7 |
 Spirometry | 66.7 | 87.5 | 66.7 | 72.7 | 66.7 | 72.7 |
 CXR | 16.7 | 100 | 22.2 | 100 | 22.2 | 100 |
 Dlco | 41.7 | 50 | 55.6 | 63.6 | 55.6 | 63.6 |
 Symptom + Spirometry | 91.7 | 75.0 | 88.9 | 54.6 | 100 | 63.6 |
 Spirometry + CXR | 75.0 | 87.5 | 77.8 | 72.7 | 77.8 | 72.7 |
 Spirometry + Dlco | 75.0 | 37.5 | 77.8 | 36.4 | 77.8 | 36.4 |
 Symptom + Spirometry + CXR | 91.7 | 75.0 | 88.9 | 54.6 | 100 | 63.6 |
 Symptom + Spirometry + Dlco | 91.7 | 37.5 | 88.9 | 27.3 | 100 | 36.4 |
 Symptom + Spirometry + CXR + Dlco | 91.7 | 37.5 | 88.9 | 27.3 | 100 | 36.4 |