Table 2.

Logistic regression models of abstinence at 12-wk and 26-wk follow-up

12-wk follow-up
26-wk follow-up
OR (95% CI)POR (95% CI)P
Age1.02 (1.00-1.04)0.0131.03 (1.01-1.05)0.010
Socioeconomic status0.88 (0.76-1.02)0.090
Nicotine dependence*0.96 (0.92-1.00)0.085
Treatment3.53 (1.75-7.13)<0.0011.81 (1.21-2.72)0.004
COMT genotype1.37 (0.70-2.69)0.3530.98 (0.64-1.50)0.914
COMT × treatment0.43 (0.19-1.00)0.050
  • NOTE: Covariates controlled for in the model included age, sex, socioeconomic status, and nicotine dependence. Only those terms retained in the models are presented. Interaction terms for COMT × sex, treatment × sex, and COMT × sex × treatment were not retained in the model for any follow-up assessments.

    Abbreviations: OR, odds ratio; 95% CI, 95% confidence interval.

  • * Nicotine dependence measured using the Horn-Russell Scale (38).

  • Reference group is Met/Met.