Table 1 Patient demographics and Histopathologies
Age at Diagnosis | Â |
   Median (Range) | 66 (26 - 86) |
   25th to 75th Percentile | 60 - 73 |
Sex | Â |
   Male | 175 (47%) |
   Female | 197 (53%) |
Smoking History | Â |
   Current Smoker | 53 (14%) |
   Previously Smoked | 257 (69%) |
   Second-Hand Smoke | 11 (3%) |
   Non-Smoker | 39 (11%) |
   Unknown | 12 (3%) |
Histology | Â |
   Adenocarcinoma | 222 (60%) |
   Squamous Cell Carcinoma | 106 (29%) |
   Adenosquamous Carcinoma | 20 (5%) |
   Bronchioloalveolar Carcinoma | 24 (6%) |
Clinical Stage | Â |
   I | 209 (56%) |
   II | 68 (18%) |
   III | 69 (19%) |
   IV | 24 (6%) |
   Unknown | 2 (1%) |
Tumor Grade | Â |
   1 | 64 (17%) |
   2 | 119 (32%) |
   3 | 161 (43%) |
   Unknown | 28 (8%) |
Tumor Size (cm) | Â |
   Median (Range) | 3.6 (0.4 - 15.0) |
   25th to 75th Percentile | 2.0 - 4.7 |
Lymph Node Metastases | Â |
   Absent | 224 (60%) |
   Present | 104 (28%) |
   Unknown | 44 (12%) |
Distant Metastases | Â |
   Absent | 274 (74%) |
   Present | 24 (6%) |
   Unknown | 74 (20%) |