Table 3.

Demographic characteristics in lung cancer and control group

Characteristic	Lung cancer n(%)	Controls n(%)	P
Mean age (± SD)	60.51 (9.57)	60.30 (10.10)	0.421
Age
<60y	113 (45.0)	143 (47.5)	0.559
≥60y	138 (55.0)	158 (52.5)
Gender
Male	181 (72.1)	214 (71.1)	0.792
Female	70 (27.9)	87 (28.9)
Smoking status
No smoking	89 (35.5)	169 (56.1)	<0.0001
Smoking <30 pack-year	36 (14.3)	91 (30.2)
Smoking ≥30 pack-year	126 (50.2)	41 (13.6)
Smoking	162 (64.5)	132 (43.9)