Table 1.

Lung cancer patient characteristics

Group 1Group 2Group 3Group 4
(n = 122)(n = 249)(n = 122)(n = 81)
Median age, y (range)65 (43–86)62 (23–82)70 (45–90)70 (50–86)
Patients >60 y, n (%)84 (68.9)138 (55.4)97 (80.2)67 (82.7)
Gender, n (%)
 Male68 (55.7)201 (80.7)51 (41.8)43 (53.1)
 Female54 (44.3)48 (19.3)71 (58.2)38 (46.9)
Smoking history, n (%)
 Current78 (63.9)102 (41.0)44 (36.1)40 (49.4)
 Previous40 (32.8)120 (48.2)58 (47.5)33 (40.7)
 Never4 (3.3)27 (10.8)18 (14.8)1 (1.2)
 Not determined0 (0.0)0 (0.0)2 (1.6)7 (8.6)