Findings

What do systematic reviews say?

Refine by population, intervention, comparison or outcome
More filters
Evidence found and GRADE certainty

2,805 questions · 2,912 findings · 307 reviews · Headline outcomes only

No studies found 706 · 24.2%GRADE not reported 133 · 4.6%Very low 786 · 27%Low 696 · 23.9%Moderate 474 · 16.3%High 117 · 4%

Intervention not reported

Nicotine patch · adults (aged ≥ 18 years) who smoked cigarettes Components: components of pharmacological and e‐cigarette (EC) interventions for smoking…

The intervention showed no clear difference in nicotine patch (low certainty).

1 finding from 1 review

Intervention not reported

Fast‐acting NRT (nicotine other) · adults (aged ≥ 18 years) who smoked cigarettes Components: components of pharmacological and e‐cigarette (EC) interventions for smoking…

The intervention showed no clear difference in fast‐acting NRT (nicotine other) (low certainty).

1 finding from 1 review

Intervention not reported

Bupropion · adults (aged ≥ 18 years) who smoked cigarettes Components: components of pharmacological and e‐cigarette (EC) interventions for smoking…

The intervention showed no clear difference in bupropion (moderate certainty).

1 finding from 1 review

Intervention not reported

Fast‐acting NRT (nicotine other) · adults (aged ≥ 18 years) who smoked cigarettes Components: components of pharmacological and e‐cigarette (EC) interventions for smoking…

The intervention leads to higher fast‐acting NRT (nicotine other) (high certainty).

1 finding from 1 review

Intervention not reported

Non‐nicotine/placebo EC · adults (aged ≥ 18 years) who smoked cigarettes Components: components of pharmacological and e‐cigarette (EC) interventions for smoking…

The intervention showed no clear difference in non‐nicotine/placebo EC (low certainty).

1 finding from 1 review

Intervention not reported

Nortriptyline · adults (aged ≥ 18 years) who smoked cigarettes Components: components of pharmacological and e‐cigarette (EC) interventions for smoking…

The intervention probably leads to higher nortriptyline (moderate certainty).

1 finding from 1 review

Adenoidectomy (with or without myringotomy) vs watchful waiting

Hearing ‐ return to normal *Ventilation tubes versus laser myringotomy (6 to 12 months ‐ medium‐term) Adjusted for non‐independence of within‐individual measurements Assumed ICC of 0.5 № of participants: 132 (2 RCTs) · children aged 6 months to 12 years with otitis media with effusion (OME)

It is very uncertain whether adenoidectomy (with or without myringotomy) changes hearing: proportion with normal hearing ‐ up to 12 months № of… compared with no treatment/watchful waiting (very low certainty).

1 finding from 1 review