Adjusted odds ratios (AORs) and 95% confidence intervals (CIs) of associations of VEGF-C genotypic frequencies and betel-nut chewing among 611 smokers with male oral cancer.

Odds ratios with their 95% confidence intervals were estimated by logistic regression models.Adjusted odds ratios with their 95% confidence intervals were estimated by multiple logistic regression models after controlling for age and alcohol consumption.aIndividuals with the wild-type genotype who do not chew betel nut.bIndividuals with either at least one mutated genotype or who chew betel nut.cIndividuals with both at least one mutated genotype and who chew betel nut.