Tobacco Free Initiative (TFI)

Quitting tobacco

Summary of effectiveness data for smoking cessation interventions (abstinence at least six months) based on all latest Cochrane Review


Intervention (source) Quit rate (%) Comparator Odds ratio (95% confidence interval) Increased chances of quitting successfully
Self-help interventions No intervention 1.24(1.07-1.45) 24%
Physician advice Brief advice vs. no advice 1.66(1.42-1.94) 66%
Intensive advice vs. no advice 1.84(1.60-2.13) 84%
Intensive vs. minimal 1.37(1.20 to 1.56) 37%
Nursing intervention Usual care 1.28(1.18 to 1.38) 28%
Individual behavioural counselling Minimal behavioural intervention 1.39(1.24 to 1.57) 39%
Group behaviour therapy Self-help programme 1.98(1.60-2.46) 98%
Telephone counselling Without telephone counselling 1.41(1.27-1.57) 41%
Less intensive vs. no 1.33(1.21-1.47) 33%
Quit and Win contests 8-20% Baseline community rate
Nicotine replacement therapy (NRT) Placebo or non-NRT 1.58(1.50-1.66) 58%
Bupropion Placebo 1.94(1.72 to 2.19) 94%
Varenicline Placebo 2.33 (1.95 to 2.80) 133%
Clonidine Placebo 1.63 (1.22 to 2.18) 63%
Nortriptyline Placebo 2.34(1.61 to 3.41) 134%
Healthcare financing systems Directed at smokers vs. no 4.38 (1.94 to 9.87) 338%
Directed at providers vs. no 1.33(1.01 to 1.77) 33%
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