Table 2.
Smoking abstinence rates (no puff of tobacco smoke in the past 7 days), intention-to-treat analysis, 2.5 months after entry into two computer-tailored smoking cessation programs on a French-language smoking cessation website, 2003-2004
| n in Analysis | Original Program | Modified Program | Odds Ratio | 95% confidence interval | P | ||
| All participants (N, %) | 11969 | 873 (14.6) | 644 (10.7) | 1.43 | 1.27-1.59 | <.001 | |
| Men | 4489 | 339 (14.7) | 235 (10.8) | 1.43 | 1.19-1.70 | <.001 | |
| Women | 7145 | 534 (14.8) | 406 (11.5) | 1.34 | 1.17-1.54 | <.001 | |
| Age | |||||||
| <19 years | 492 | 11 (4.5) | 6 (2.4) | 1.92 | 0.70-5.28 | .20 | |
| 20-29 | 3936 | 226 (11.5) | 186 (9.4) | 1.25 | 1.02-1.53 | .03 | |
| 30-39 | 3920 | 357 (17.5) | 238 (12.7) | 1.46 | 1.22-1.74 | <.001 | |
| 40-49 | 2259 | 207 (17.7) | 156 (14.3) | 1.29 | 1.03-1.62 | .03 | |
| 50-77 | 940 | 72 (14.9) | 46 (10.1) | 1.57 | 1.05-2.31 | .03 | |
| All current smokers | 8682 | 472 (10.9) | 388 (8.9) | 1.24 | 1.08-1.43 | .003 | |
| Stage of change at baseline | |||||||
| Precontemplation | 385 | 8 (3.7) | 6 (3.5) | 1.07 | 0.36-3.14 | .91 | |
| Contemplation | 2977 | 143 (9.6) | 95 (6.4) | 1.54 | 1.18-2.02 | .002 | |
| Preparation | 5207 | 321 (12.2) | 279 (10.8) | 1.15 | 0.97-1.37 | .10 | |
| Smoking rate | |||||||
| Very light smokers (1 to 5 cig./day) | 308 | 11 (7.6) | 13 (7.9) | 0.96 | 0.42-2.22 | .93 | |
| Light smokers (6-10 cig./day) | 1385 | 63 (9.1) | 76 (11.0) | 0.81 | 0.57-1.15 | .23 | |
| Average smokers (11-24 cig./day) | 4520 | 242 (10.7) | 192 (8.5) | 1.28 | 1.05-1.56 | .015 | |
| Heavy smokers (> 25 cig./day) | 2347 | 154 (12.9) | 101 (8.8) | 1.54 | 1.18-2.01 | .001 | |
| All former smokers | 3095 | 387 (25.2) | 244 (15.7) | 1.81 | 1.51-2.17 | <.001 | |
| Action stage of change | 2305 | 340 (26.2) | 198 (19.6) | 1.46 | 1.19-1.78 | <.001 | |
| Maintenance stage of change | 175 | 23 (27.4) | 19 (20.9) | 1.43 | 0.71-2.87 | .31 | |