Findings

What do systematic reviews say?

Refine by population, intervention, comparison or outcome
More filters
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%

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
Show 2 more findings