Table 2.
Multivariate Logistic Regression Analysis of Smoking Abstinence at Weeks 24 and 52 by Treatment Arm, Controlling for Covariates
| Covariate | OR (95% CI) | P Value |
|---|---|---|
| Model 1 a | ||
|
| ||
| Sex (reference, female) | 0.71 (0.44-1.15) | .16 |
|
| ||
| Race (reference, African American) | 0.89 (0.53-1.47) | .64 |
|
| ||
| Adherence to patch regimen | 1.48 (1.29-1.71) | <.001 |
|
| ||
| Age | 1.02 (1.00-1.04) | .07 |
|
| ||
| Educational level (reference, ≥some college) |
0.71 (0.40-1.24) | .23 |
|
| ||
| Income (reference, ≥$50 000/y) | 0.85 (0.49-1.48) | .56 |
|
| ||
| Sexual orientation (reference, heterosexual) | 2.66 (1.26-5.61) | .01 |
|
| ||
| FTND score | 0.88 (0.78-0.99) | .04 |
|
| ||
| Treatment arm (reference, standard treatment) |
1.70 (1.03-2.81) | .04 |
|
| ||
| Model 2 b | ||
|
| ||
| Sex (reference, female) | 0.85 (0.52-1.39) | .53 |
|
| ||
| Race (reference, white) | 1.48 (0.87-2.53) | .15 |
|
| ||
| Adherence to patch regimen | 1.68 (1.41-2.01) | <.001 |
|
| ||
| Age | 1.02 (0.99-1.04) | .18 |
|
| ||
| Educational level (reference, ≥some college) |
0.49 (0.27-0.89) | .19 |
|
| ||
| Income (reference, ≥$50 000/y) | 0.67 (0.38-1.20) | .18 |
|
| ||
| Sexual orientation (reference, heterosexual) | 2.18 (1.01-4.73) | .05 |
|
| ||
| FTND score | 0.86 (0.76-0.98) | .02 |
|
| ||
| Treatment arm (reference, standard and extended treatment) |
1.17 (0.69-1.98) | .57 |
Abbreviations: FTND, Fagerström Test for Nicotine Dependence; OR, odds ratio.
a
Indicates week 24 abstinence by standard (8-week) treatment arm compared with extended (24-week) and maintenance (52-week) treatment arms.
b
Indicates week 52 abstinence by standard (8-week) and extended (24-week) treatment arms compared with maintenance (52-week) treatment arm.