Table 3.
Predictors of abstinence at three stages of smoking treatment, by period
| B a | Wald | p value | OR | CI 95% | |
|---|---|---|---|---|---|
|
Group 2001-2005 |
|
|
|
|
|
|
End of the treatment |
|
|
|
|
|
| Stage of change (Preparation) |
0.581 |
8.017 |
0.005 |
1.789 |
1.196-2.675 |
| N° cig./day (<25 cig./day) |
0.631 |
10.048 |
0.002 |
1.879 |
1.272-2.774 |
| MDE past (yes) |
-0.521 |
5.488 |
0.019 |
0.594 |
0.384-0.918 |
| Depressive disorder (current) (yes) |
-0.785 |
4.371 |
0.037 |
0.456 |
0.218-0.952 |
| Constant |
0.060 |
0.124 |
0.725 |
1.062 |
|
|
6-month follow-up |
|
|
|
|
|
| N° cig./day (<25 cig./day) |
0.465 |
4.972 |
0.026 |
1.592 |
1.058-2.395 |
| Depressive disorder (current) (yes) |
-1.822 |
8.942 |
0.003 |
0.162 |
0.049-0.534 |
| Constant |
-0.962 |
35.605 |
0.000 |
0.382 |
|
|
12-month follow-up |
|
|
|
|
|
| Stage of change (Preparation) |
0.728 |
11.730 |
0.001 |
2.071 |
1.365-3.142 |
| Depressive disorder (current) (yes) |
-1.424 |
6.997 |
0.008 |
0.241 |
0.084-0.691 |
| Constant |
-1.195 |
64.924 |
0.000 |
0.303 |
|
|
Group 2006-2010 |
|
|
|
|
|
|
End of the treatment |
|
|
|
|
|
| N° cig./day (<25 cig./day) |
1.035 |
22.324 |
0.001 |
2.815 |
1.833-4.325 |
| MDE (past) (yes) |
-0.689 |
10.820 |
0.001 |
0.502 |
0.333-0.757 |
| Constant |
-0.265 |
1.906 |
0.167 |
0.767 |
|
|
6-month follow-up |
|
|
|
|
|
| N° cig./day (<25 cig./day) |
0.614 |
5.596 |
0.018 |
1.848 |
1.111-3.075 |
| Constant |
-1.560 |
50.293 |
0.000 |
0.210 |
|
|
12-month follow-up |
|
|
|
|
|
| N° cig./day (<25 cig./day) |
0.577 |
4.622 |
0.032 |
1.781 |
1.052-3.013 |
| Constant | -1.660 | 53.275 | 0.000 | 0.190 |
Note. CI = confidence interval; FTND = Fagerström Test for Nicotine Dependence; ND = nicotine dependence; OR = odds ratio; MDE = Major Depressive Episode. The category of reference is shown in brackets.
aThe groups were coded in the model as Smokers = 0 and Abstainers = 1.