| Lung cancer | No lung cancera | Totalb |
---|---|---|---|
Sputum cytology | Â | Â | Â |
Suspicious or pathologicalc | 7 | 3 | 10 |
Regular or equivocald | 5 | 172 | 177 |
LDSCT | Â | Â | Â |
Suspicious | 11 | 6 | 17 |
Regular | 1 | 169 | 170 |
Cytology and LDSCT | Â | Â | Â |
At least one positive | 12 | 8e | 20 |
Both negative | 0 | 167 | 167 |