Characteristics of the 261 Patients
| Characteristic | n | % |
| Age (mean ± SD, 66 ± 12 y) | ||
| <60 y | 71 | 27.2 |
| 60–70 y | 97 | 37.2 |
| >70 y | 93 | 35.6 |
| Sex | ||
| Female | 143 | 54.8 |
| Male | 118 | 45.2 |
| Race | ||
| White | 185 | 70.9 |
| Black | 62 | 23.7 |
| Other | 14 | 5.4 |
| Smoking | ||
| Yes | 221 | 84.7 |
| No | 33 | 12.6 |
| Unknown | 7 | 2.7 |
| Histology | ||
| Adenocarcinoma | 79 | 30.3 |
| Bronchioalveolar carcinoma | 7 | 2.7 |
| Bronchogenic carcinoid | 1 | 0.4 |
| Carcinoid | 7 | 2.7 |
| Epithelioid neoplasm | 1 | 0.4 |
| Mesothelioma | 8 | 3.1 |
| NSCLC | 100 | 38.7 |
| SCC | 55 | 21.1 |
| Unknown | 2 | 0.8 |
| Stage | ||
| I | 90 | 34.5 |
| II | 23 | 8.8 |
| III | 81 | 31.0 |
| IV | 17 | 6.5 |
| Unknown | 50 | 19.2 |
| Last treatment | ||
| Surgery | 111 | 42.5 |
| Radiation | 74 | 28.4 |
| Chemotherapy | 76 | 29.1 |
| PET/CT outcome | ||
| Negative | 63 | 24.1 |
| Positive | 198 | 75.9 |
NSCLC = non–small cell lung cancer; SCC = squamous cell carcinoma.