Figure 3 depicts lifetime and past-year prevalence of nicotine dependence for each gender by BMI category before controlling for covariates. Table 4 shows ORs and CIs resulting from the logistic regression analyses, controlling for covariates, with nicotine dependence as the dependent variable. The prevalence of lifetime and past year nicotine dependence was significantly lower for overweight and obese men relative to normal weight men. In women, overweight was significantly and positively associated with lifetime nicotine dependence, whereas obesity was significantly and inversely associated with past-year nicotine dependence after controlling for covariates. The interaction between BMI and gender was significant for lifetime and past-year nicotine dependence. Removing lifetime and past-year alcohol and drug use disorders as covariates did not change relationships between BMI and nicotine dependence.
