Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

23 questions · 34 findings · 9 reviews

No studies found 3 · 8.8%GRADE not reported 0 · 0%Very low 16 · 47.1%Low 13 · 38.2%Moderate 2 · 5.9%High 0 · 0%

Tobacco cessation interventions vs placebo or usual care

Tobacco abstinence after counselling (counselling) · people in treatment for or recovery from alcohol or other drug dependency

Tobacco cessation interventions showed no clear difference in tobacco abstinence after counselling (counselling) compared with placebo or usual care (low certainty).

1 finding from 1 review

Tobacco cessation interventions vs placebo or usual care

Tobacco abstinence after pharmacotherapy (pharmacotherapy) · people in treatment for or recovery from alcohol or other drug dependency

Tobacco cessation interventions may leads to higher tobacco abstinence after pharmacotherapy (pharmacotherapy) compared with placebo or usual care (low certainty).

1 finding from 1 review

Tobacco cessation interventions vs placebo or usual care

Tobacco abstinence after combined counselling and pharmacotherapy (combined) · people in treatment for or recovery from alcohol or other drug dependency

Tobacco cessation interventions may leads to higher tobacco abstinence after combined counselling and pharmacotherapy… compared with placebo or usual care (low certainty).

1 finding from 1 review

Behavioural intervention vs minimal control

Smoking cessation · young people

Behavioural interventions showed no clear difference in individual counselling (in‐person) vs control Smoking cessation compared with minimal control (low certainty).

5 findings from 1 review
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Interventions delivered by dental professionals vs control

Smoking cessation · participants who used tobacco products

It is very uncertain whether interventions delivered by dental professionals changes multi‐session behavioural support versus usual care, brief advice,… compared with control (very low certainty).

4 findings from 1 review
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Pharmacological interventions vs placebo

Smoking cessation · young people

It is very uncertain whether pharmacological interventions changes bupropion vs placebo Smoking cessation compared with placebo (very low certainty).

3 findings from 1 review

Removal of predisposing habits (e.g. tobacco/alcohol cessation) vs Placebo or no treatment

Outcome not reported · People with a diagnosis of oral leukoplakia

The review found no eligible studies for this question.

1 finding from 1 review

Pharmacological interventions vs placebo

Adverse events (control ‐ placebo) · young people
3 findings from 1 review

Intervention not reported

Asking about tobacco use Proportion of smokers asked about tobacco use · Smokers
1 finding from 1 review

Intervention not reported

Cessation: NRT vs placebo · Smokers who cannot or do not want to quit smoking

The intervention may leads to higher cessation: NRT vs placebo (low certainty).

1 finding from 1 review

Intervention not reported

Cessation: Bupropion vs. placebo · Smokers who cannot or do not want to quit smoking

The intervention showed no clear difference in cessation: Bupropion vs. placebo (low certainty).

1 finding from 1 review

Intervention not reported

Cessation: Varenicline vs placebo · Smokers who cannot or do not want to quit smoking

The intervention showed no clear difference in cessation: Varenicline vs placebo (low certainty).

1 finding from 1 review

Intervention not reported

Cessation: Ecigs vs placebo · Smokers who cannot or do not want to quit smoking

The intervention showed no clear difference in cessation: Ecigs vs placebo (low certainty).

1 finding from 1 review

Intervention not reported

Cessation: Snus vs placebo · Smokers who cannot or do not want to quit smoking

The intervention showed no clear difference in cessation: Snus vs placebo (low certainty).

1 finding from 1 review

Intervention not reported

Cessation: Low‐nicotine cigarettes vs regular cigarettes · Smokers who cannot or do not want to quit smoking

It is very uncertain whether the intervention changes cessation: Low‐nicotine cigarettes vs regular cigarettes (very low certainty).

1 finding from 1 review

Intervention not reported

Cessation: Behavioural reduction advice vs health mailings · Smokers who cannot or do not want to quit smoking

It is very uncertain whether the intervention changes cessation: Behavioural reduction advice vs health mailings (very low certainty).

1 finding from 1 review

Intervention not reported

Proportion of participants abstinent ‐ long‐term (> 6 months) assessed via self report +/‐ biochemical verification · consumers of tobacco living with HIV and AIDS

The intervention showed no clear difference in proportion of participants abstinent ‐ long‐term (> 6 months)… (moderate certainty).

1 finding from 1 review