Characteristics of the study participants and programme effectiveness at 1 and 5–8 years of follow-up, by treatment intensity
| HIT N=150 | LIT N=150 | P value | |
| Study participants (n) | |||
| Baseline measures | 146 | 148 | |
| 12-month follow-up measures | 132 | 122 | |
| Available at long-term follow-up | 141 | 143 | |
| Long-term follow-up measures | 121 | 120 | |
| Participants characteristics | |||
| Gender (n) | |||
| Men | 26 | 32 | 0.410 |
| Women | 115 | 111 | |
| Age at baseline (age) | |||
| Mean (SD) | 48.7 (9.6) | 48.5 (11.0) | 0.825 |
| Median | 48.0 | 49.0 | |
| Education (in years) (n) | |||
| 0–9 | 25 | 36 | 0.336 |
| 10–12 | 60 | 55 | |
| >=13 | 52 | 50 | |
| Smoked cigarettes/week at baseline (n) | |||
| Mean (SD) | 106 (50) | 105 (40) | 0.794 |
| Median | 105 | 105 | |
| Intervention effectiveness (n) | |||
| 1-year follow-up | |||
| 6-month continuous abstinence | 27 | 14 | 0.034* |
| 5–8 years of follow-up | |||
| Sustained abstinence | 17 | 7 | 0.030* |
| Relapse rate (%) | 26 | 50 | 0.345 |
*Statistical significant differences at 0.05 level in effectiveness between the programmes.
HIT, High-intensity smoking cessation treatment; LIT, Low-intensity smoking cessation treatment.