Risk of ESCC associated with the ADH1C rs1614972 and rs1789903 and ADH7 rs17028973SNPs by smoking status and drinking history in Jinan set.

Note: SNP, single nucleotide polymorphism; ESCC, esophageal squamous cell carcinoma; OR, odds ratio; CI, confidence interval.1Number of patients with genotype/number of control subjects with genotype.2Data were calculated by logistic regression, adjusted for sex, age, smoking and drinking history, where it was appropriate.3P values for gene-environment interaction were calculated using the multiplicative interaction term in SPSS software.