Adjusted odds ratio (AOR) and 95% CI for oral cancer associated with <i>NFKB</i> and <i>NFKBIA</i> genotypic frequencies and betel nut chewing among 598 smokers.

<p>ORs with 95% CIs were estimated by logistic regression models. AORs with 95% CIs were estimated by multiple logistic regression models after controlling for age and sex.</p>a<p>People with wild genotype but not chewers of betel nut.</p>b<p>People with either one or more mutated genotypes, or chewers of betel nut (but not both).</p>c<p>People with at least one mutated genotype and also chewers of betel nut.