Table 1.

Patient characteristics

VariablesSubsetn (%)
Age (range, 28-91)<68145 (52)
>69135 (48)
SexMale191 (68)
Female89 (32)
Smoking historyNever95 (34)
Ever185 (66)
Disease stageI137 (49)
II32 (11)
III51 (18)
IV52 (19)
Recurrent disease8 (3)
HistologyAdenocarcinoma205 (73)
Squamous cell carcinoma59 (21)
Others16 (6)
Gefitinib treatmentOn95 (34)
Off185 (66)