Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

2,661 questions · 2,751 findings · 453 reviews

No studies found 593 · 21.6%GRADE not reported 277 · 10.1%Very low 538 · 19.6%Low 712 · 25.9%Moderate 516 · 18.8%High 115 · 4.2%

Pharmacological treatment vs placebo

Prolonged abstinence at longest · smokers with COPD

Pharmacological treatment leads to higher prolonged abstinence at longest compared with placebo (high certainty).

5 findings from 1 review
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