Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,718 questions · 1,762 findings · 100 reviews · Headline outcomes only

No studies found 507 · 28.8%GRADE not reported 115 · 6.5%Very low 556 · 31.6%Low 444 · 25.2%Moderate 114 · 6.5%High 26 · 1.5%

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

Pharmacological interventions vs placebo

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

Non‐pharmaceutical interventions vs placebo/usual care or different forms of intervention

Psychological well‐being (secondary outcome) Not addressed · people within 3 months after stroke
2 findings from 1 review

Antidepressants vs placebo

Depression: meeting study criteria for depression at end of · people with stroke

It is very uncertain whether pharmacological interventions (antidepressants) changes depression: meeting study criteria for depression at end treatment… compared with placebo (very low certainty).

1 finding from 1 review