| Study, Year | Study Population | Intervention | Number Malignancies (%) | Percent Resectable | Survival |
|---|---|---|---|---|---|
| Philadelphia Neoplasm Research Project, 195148,49 | 6,136 men, age 45+ | Photofluorograms and questionnaires every 6 mos for 10 yrs | Prevalence: |
35 | 8% (5 yrs) |
| Tokyo Metropolitan Government Study, 195351 | 1,871,374 men and women, all ages | Intermittent CXR over 26 yrs (sputum cytology in some) | 193 (0.01) | 56 | 44% (5 yrs for resectable tumors) (usual 5-yr survival at that time, 20%) |
| Veterans Administration Trial, 195850 | 141,607 men, median age 62.8 | CXR and sputum cytology | 73 (0.052) | 36 | 17% (32 mos) |
| South London Cancer Study, 195952 | 67,400 men, age 45+ | CXR every 6 mos | 234 (0.35) | 56 | 18% (4 yrs) (usual survival at that time, 9%) |