Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,973 questions · 3,072 findings · 410 reviews · Headline outcomes only

No studies found 559 · 18.2%GRADE not reported 143 · 4.7%Very low 654 · 21.3%Low 833 · 27.1%Moderate 683 · 22.2%High 200 · 6.5%

Intervention not reported

Smoking cessation at ≥ 6 months · tobacco smokers (general population, low income, inpatients and outpatients with mixed diagnoses)

The intervention showed no clear difference in smoking cessation at ≥ 6 months (low certainty).

1 finding from 1 review

Motivational interviewing vs another smoking cessation intervention

Smoking cessation · tobacco smokers (general population, adolescents, offenders, homeless, substance users, hospital inpatients, HIV‐positive)

Motivational interviewing showed no clear difference in smoking cessation at ≥ 6 months compared with another smoking cessation intervention (low certainty).

1 finding from 1 review