Table 1.
Adjusted odds ratios (OR) with corresponding 95% confidence intervals (95%CI) of smoking outcomes at the 6-month follow-up (quitting smoking, improving the motivational stage of change for smoking cessation, reducing the number of cigarettes per day) byh motivational stage of change
| All centers, by motivational stage of change * | |
Quitting smoking |
Improving the motivational stage of change for smoking cessation |
Reducing the number of cigarettes per day |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Ntot ° | N | OR § | 95%CI | N | OR § | 95%CI | N | OR § | 95%CI | |
| Precontemplation | ||||||||||
| control arm |
113 |
9 |
1* |
|
28 |
1* |
|
27 |
1* |
|
| experimental arms |
230 |
7 |
0.3 |
0.1, 0.9 |
72 |
1.4 |
0.8,2.4 |
68 |
1.3 |
0.8,2.2 |
| Contemplation | ||||||||||
| control arm |
129 |
6 |
1* |
|
32 |
1* |
|
31 |
1* |
|
| experimental arms |
230 |
15 |
1.3 |
0.5, 3.5 |
53 |
1.0 |
0.6, 1.6 |
86 |
1.8 |
1.1, 3.0 |
| Preparation | ||||||||||
| control arm |
117 |
9 |
1* |
|
-- |
-- |
-- |
42 |
1* |
|
| experimental arms |
243 |
36 |
2.1 |
1.0, 4.6 |
-- |
-- |
-- |
77 |
0.8 |
0.5, 1.3 |
| Overall ** | ||||||||||
| control arm |
371 |
25 |
1* |
|
60 |
1* |
|
104 |
1* |
|
| experimental arms | 729 | 61 | 1.2 | 0.8, 2.0 | 125 | 1.1 | 0.8, 1.6 | 241 | 1.2 | 0.9, 1.7 |
ORs were calculated considering the two collapsed intervention arms with respect to the control arm.
* multilevel analysis.
§ adjusted for age.
° Ntot: participants in the collapsed experimental arms and in the control arm.
** the number of participants reported in the Overall line do not always corresponds to the sum of the number of participants in the three stages of change, because of some missing values.