Logistic regression analysis for evaluation of the association among homozygous SNP alleles (–617A/A) in the NRF2 gene and gender/smoking experience of lung cancer patients.

Abbreviation: CI, confidence interval.Gender code: 1 = female; 0 = male.Smoking experience code: 1 = smoker; 0 = non-smoker.The multivariate logistic regression analysis was performed under two categories, i.e., the gender (female and male) and the smoking experience (smoker and non-smoker).