Results of diagnostic studies of screened patients (n = 169)
| Diagnostic test | No (%) |
|---|---|
| CIS, carcinoma-in-situ. | |
| Sputum | |
| Normal | 73 (67%) |
| Metaplasia | 35 (32%) |
| Dysplasia | 1 (1%) |
| Insufficient | 60 |
| Bronchoscopy | |
| Normal | 28 (17%) |
| Inflammation | 16 (9.7%) |
| Metaplasia | 84 (51%) |
| Dysplasia | 19 (11.5%) |
| CIS | 2 (1.2%) |
| Cancer | 3 (1.8%) |
| Other | 18 (10.7%) |
| CT nodules | |
| No | 70 (43%) |
| Yes | 85 (52.1%) |
| Non-solid opacities | 8 (4.9%) |