Table 1. Demographics and clinicopathologic features of 174 patients with NSCLC.

Variables	No. of patients (%)
Age
≤50	37(21.3)
51–60	69(39.6)
61–70	49(28.2)
>70	19(10.9)
Mean ± SD (range)	58.17±9.44
Histologic subtype
Adenocarcinoma	107(61.5)
Squamous cell carcinoma	67(38.5)
Smoking status
Smoker	109(62.6)
Non-smoker	65(37.4)
Stage
IA	24(13.8)
IB	33(18.9)
IIA	30(17.2)
IIB	16(9.2)
IIIA	68(39.1)
IIIb	1(0.5)
NA	2(1.1)
Total	174

SD,standard deviation; NA,not applicable.