Adjusted odds ratios (ORs, AORs) and 95% confidence intervals (CIs) of oral cancer associated with MTNR1A genotypic frequencies and betel nut chewing among 748 smokers.

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 a wild genotype but without betel nut chewing.b Individuals with either at least one mutated genotype or betel nut chewing.c Individuals with at least one mutated genotype and betel nut chewing.Adjusted odds ratios (ORs, AORs) and 95% confidence intervals (CIs) of oral cancer associated with MTNR1A genotypic frequencies and betel nut chewing among 748 smokers.