Table 5.
Logistic regression predicting completion of the intervention in the interactive version (n=10,856).
| Variable | B | SE | Wald | df | P | OR | 95% CI | |
| Sex (male) | –0.28 | 0.12 | 5.63 | 1 | .02 | 0.76 | 0.61-0.95 | |
| Age (years) |
|
|
|
|
|
|
|
|
|
|
≤31 | Ref |
|
21.28 | 3 | <.001 |
|
|
|
|
32-39 | 0.11 | 0.18 | 0.37 | 1 | .55 | 1.11 | 0.79-1.57 |
|
|
40-47 | 0.64 | 0.16 | 15.60 | 1 | <.001 | 1.90 | 1.38-2.61 |
|
|
≥48 | 0.48 | 0.18 | 7.41 | 1 | .01 | 1.61 | 1.14-2.27 |
| Nationality (Spanish) | 1.46 | 0.45 | 10.38 | 1 | <.001 | 4.32 | 1.77-10.51 | |
| Education |
|
|
|
|
|
|
|
|
|
|
Primary | Ref |
|
8.20 | 2 | .02 |
|
|
|
|
Secondary | 0.37 | 0.22 | 2.90 | 1 | .09 | 1.44 | 0.95-2.20 |
|
|
University | 0.57 | 0.21 | 7.12 | 1 | .01 | 1.76 | 1.16-2.67 |
| Cigarettes per day |
|
|
|
|
|
|
|
|
|
|
≤15 | Ref |
|
9.83 | 2 | .01 |
|
|
|
|
16-20 | –0.30 | 0.13 | 5.14 | 1 | .02 | 0.74 | 0.58-0.96 |
|
|
≥21 | –0.43 | 0.15 | 8.22 | 1 | <.001 | 0.65 | 0.48-0.87 |
| Expectation of success |
|
|
|
|
|
|
|
|
|
|
Not at all | Ref |
|
21.89 | 3 | <.001 |
|
|
|
|
Some | 1.31 | 0.59 | 4.99 | 1 | .03 | 3.72 | 1.17-11.79 |
|
|
Pretty much | 1.80 | 0.59 | 9.42 | 1 | <.001 | 6.03 | 1.91-18.98 |
|
|
Completely | 1.70 | 0.59 | 8.25 | 1 | <.001 | 5.49 | 1.72-17.57 |
| Stress | –0.07 | 0.02 | 10.10 | 1 | <.001 | 0.94 | 0.90-0.98 | |
| Constant | –6.27 | 0.80 | 62.28 | 1 | <.001 | 0.00 |
|
|