Adjusted odds ratios (ORs, AORs) and 95% confidence interval (CIs) of oral cancer associated with <i>MTNR1A</i> genotypic frequencies and smokers among 571 betel nut consumers.

ORs with their 95% CIs were estimated by logistic regression models. AORs with their 95% CIs were estimated by multiple logistic regression models after controlling for age, gender, and alcohol consumption. a Individuals with the wild-type genotype who did not smoke. b Individuals with either at least one mutated genotype or who smoked. c Individuals with both at least one mutated genotype and who smoked. Adjusted odds ratios (ORs, AORs) and 95% confidence interval (CIs) of oral cancer associated with MTNR1A genotypic frequencies and smokers among 571 betel nut consumers.