Table 7.
Logistic regression predicting smoking cessation at 3 months (n=21,707).
| Variable | B | SE | Wald | df | P | OR | 95% CI | |
| Marital status (married/couple) | 0.23 | 0.11 | 4.70 | 1 | .03 | 1.26 | 1.02-1.55 | |
| Cigarettes per day |
|
|
|
|
|
|
|
|
|
|
≤15 | Ref |
|
21.15 | 2 | <.001 |
|
|
|
|
16-20 | –0.35 | 0.12 | 8.71 | 1 | <.001 | 0.70 | 0.56-0.89 |
|
|
≥21 | –0.59 | 0.14 | 18.70 | 1 | <.001 | 0.55 | 0.42-0.72 |
| Expectation of success |
|
|
|
|
|
|
|
|
|
|
Not at all | Ref |
|
10.97 | 3 | .01 |
|
|
|
|
Some | 0.43 | 0.35 | 1.55 | 1 | .21 | 1.54 | 0.78-3.04 |
|
|
Pretty much | 0.68 | 0.35 | 3.85 | 1 | .05 | 1.97 | 1.00-3.86 |
|
|
Complete | 0.80 | 0.35 | 5.19 | 1 | .02 | 2.23 | 1.12-4.46 |
| Version of the program (interactive) | –0.51 | 0.11 | 22.55 | 1 | <.001 | 0.60 | 0.49-0.74 | |
| Constant | –4.27 | 0.35 | 150.76 | 1 | <.001 | 0.01 |
|
|