Table 2.

Interaction between alcohol drinking and genotype for esophageal squamous cell carcinoma risk

	Non-drinker			Drinker
	Case/control	OR	95% CI	Case/control	OR	95% CI
ADH1B[13-15,17,18]
His/His + Arg/His	217/1355	Ref.	-	674/668	6.21	2.39-16.27
Arg/Arg	22/72	2.37	1.40-4.01	258/61	25.20	10.87-53.44
ALDH2[13-18]
Glu/Glu	96/604	Ref.	-	356/609	4.22	2.030-8.77
Glu/Lys + Lys/Lys	223/951	1.70	1.05-2.75	687/190	21.47	6.44-71.59

ADH1B: Alcohol dehydrogenase-1B; ALDH2: Aldehyde dehydrogenase-2; His: Histidine; Arg: Arginine; Glu: Glutamate; Lys: Lysine; OR: Odds ratio; CI: Confidence interval.