Impact of Genetic Variation in TLR4 3′UTR on NSCLC Genetic Susceptibility

Table 1

Distributions of selected characteristics of NSCLC cases and control subjects.

Variables	Cases (n = 700)		Controls (n = 700)		value^a
	No	(%)	No	(%)
Gender					0.821
Male	465	66.4	469	67.0
Female	235	33.6	231	33.0
Age					1.000
≤50	125	17.9	124	17.7
51–60	261	37.3	262	37.4
61–70	225	32.1	224	32.0
>70	89	12.7	90	12.9
Smoking status					0.000
Nonsmoker	389	55.6	503	71.9
Smoker	311	44.4	197	28.1
Pack year of smoking					0.773
≤30	184	59.2	114	57.9
>30	127	40.8	83	42.1
Histological types
Adenocarcinoma	402	57.4
Squamous cell	270	38.6
Other carcinomas	28	4.0

^aTwo-sided χ² test.