Table 3. Genotype distribution and lung cancer risk in smokers and non-smokers.

	Genotype	Cases(%)	Controls(%)	OR(95% CI)	P value	ORadj.(95% CI)	Padj.
Smokers	rs6495309
	CC	60(32.1)	24(27.6)	Ref	0.752	Ref	0.612
	CT	88(47.1)	44(50.6)	0.800(0.441-1.452)	0.463	0.770(0.421-1.408)	0.396
	TT	39(20.9)	19(21.8)	0.821(0.398-1.694)	0.594	0.721(0.344-1.508)	0.384
	CC+CT	148(79.1)	68(78.2)	Ref		Ref
	TT	39(20.9)	19(21.8)	0.943(0.508-1.757)	0.853	0.845(0.447-1.596)	0.604
	rs8040868
	TT	70(37.4)	41(47.1)	Ref	0.316	Ref	0.262
	TC	97(51.9)	38(43.7)	1.495(0.873-2.560)	0.143	1.540(0.890-2.665)	0.123
	CC	20(10.7)	8(9.2)	1.464(0.592-3.623)	0.409	1.595(0.641-3.973)	0.316
	TT+TC	167(89.3)	79(90.8)	Ref		Ref
	CC	20(10.7)	8(9.2)	1.183(0.499-2.802)	0.703	1.265(0.532-3.007)	0.595
	rs1948
	CC	42(22.7)	24(27.6)	Ref	0.408	Ref	0.284
	CT	94(50.8)	46(52.9)	1.168(0.233-2.165)	0.62	1.241(0.661-2.327)	0.501
	TT	49(26.5)	17(19.5)	1.647(0.781-3.647)	0.19	1.834(0.859-3.912)	0.117
	CC+CT	136(73.5)	70(80.5)	Ref		Ref
	TT	49(26.5)	17(19.5)	1.484(0.796-2.765)	0.214	1.584(0.845-2.968)	0.151
Non-smokers	rs6495309
	CC	25(23.4)	54(24.7)	Ref	0.726	Ref	0.642
	CT	60(56.1)	113(51.6)	1.147(0.650-2.024)	0.636	1.174(0.660-2.089)	0.585
	TT	22(20.6)	52(23.7)	0.914(0.459-1.818)	0.797	0.894(0.445-1.796)	0.752
	CC+CT	85(79.4)	167(76.3)	Ref		Ref
	TT	22(20.6)	52(23.7)	0.831(0.473-1.459)	0.52	0.800(0.451-1.418)	0.445
	rs8040868
	TT	51(47.7)	106(49.1)	Ref	0.053	Ref	0.111
	TC	43(40.2)	100(46.3)	0.894(0.548-1.458)	0.653	0.900(0.574-1.478)	0.676
	CC	13(12.1)	10(4.6)	2.702(1.110-6.576)	0.029*	2.375(0.964-5.849)	0.060
	TT+TC	94(87.9)	206(95.4)	Ref		Ref
	CC	13(12.1)	10(4.6)	2.849(1.206-6.731)	0.017*	2.496(1.044-5.965)	0.040*
	rs1948
	CC	24(22.6)	67(30.9)	Ref	0.093	Ref	0.055
	CT	65(61.3)	105(48.4)	1.728(0.988-3.024)	0.055	1.896(1.069-3.362)	0.029*
	TT	17(16.0)	45(20.7)	1.055(0.510-2.182)	0.886	1.133(0.540-2.380)	0.741
	CC+CT	89(84.0)	172(79.3)	Ref		Ref
	TT	17(16.0)	45(20.7)	0.730(0.395-1.349)	0.315	0.737(0.395-1.376)	0.339

^*P<0.05.