% smokers, assuming that all drop outs smoke | % smokers, assuming that all drop outs do not smoke | % smokers, assuming that all drop outs did not change smoking behaviour | |||||||
---|---|---|---|---|---|---|---|---|---|

Intervention n=1411 | Control n=1075 | OR (95% CI) | Intervention n=1411 | Control n=1075 | OR (95% CI) | Intervention n=1411 | Control n=1075 | OR (95% CI) | |

OR, odds ratio; CI, confidence intervals. | |||||||||

Baseline | 18.0 | 20.7 | 18.0 | 20.7 | 18.0 | 20.7 | |||

Follow up measurement 1 | 44.8 | 52.2 | 0.74 (0.62 to 0.87) | 13.7 | 15.3 | 0.95 (0.74 to 1.21) | 19.9 | 25.8 | 0.63 (0.48 to 0.83) |

Follow up measurement 2 | 66.3 | 67.1 | 1.01 (0.85 to 1.20) | 12.5 | 12.9 | 0.73 (0.75 to 1.22) | 23.9 | 26.7 | 0.91 (0.70 to 1.18) |