Table 2.

Odd ratios for selected genotypes in CHRNA9 and CHRNA3 genes^*

Gene	SNP	Allele change	Cancer	Control	P-value	Odds Ratio (95% confidence interval)
CHRNA9
	rs56159866	TT	35	22	0.024	1.9 (1.1–3.4)
		CC+CT	305	403
	rs6819385	AA	126	102	0.002	1.65 (1.2–2.3)
		AG+GG	209	279
CHRNA3	rs8040868	GG	81	56	0.0003	2 (1.38–2.9)
		AG+AA	255	380

^*P values were calculated by two-tailed Fisher’s exact test with 95% confidence intervals.