Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,337 questions · 1,354 findings · 566 reviews

No studies found 307 · 22.7%GRADE not reported 81 · 6%Very low 424 · 31.3%Low 310 · 22.9%Moderate 189 · 14%High 43 · 3.2%

Percutaneous ethanol injection vs radiofrequency ablation

Serious adverse events (number of events) · people with early‐ or very early‐stage hepatocellular carcinoma ineligible for surgery

It is very uncertain whether percutaneous alcohol injection changes serious adverse events (number of events) compared with radiofrequency ablation (very low certainty).

1 finding from 1 review

Routine abdominal drain vs No drain

Serious adverse events (number of events) · patients with laparoscopic cholecystectomy.

It is very uncertain whether routine abdominal drain changes serious adverse events (number of events) compared with 'no drain' (very low certainty).

1 finding from 1 review

Casirivimab/imdevimab vs placebo

Serious adverse events until data cut‐offb · SARS‐CoV‐2 uninfected people without defined exposure, or with potential exposure to SARS‐CoV‐2

Casirivimab/imdevimab showed no clear difference in serious adverse events until data cut‐offb compared with placebo (low certainty).

1 finding from 1 review

Children: formoterol/fluticasone vs regular salmeterol and fluticasone

Non‐fatal serious adverse events · children with chronic asthma

Children: formoterol/fluticasone showed no clear difference in all‐cause non‐fatal serious adverse events compared with salmeterol/fluticasone (low certainty).

1 finding from 1 review

Summary of findings: bevacizumab vs ranibizumab

Serious systemic adverse events at one year · people with neovascular age‐related macular degeneration

Summary of findings: bevacizumab showed no clear difference in serious systemic adverse events at 1 yearb compared with ranibizumab (moderate certainty).

1 finding from 1 review

Laparoscopy vs laparotomy

Serious adverse events (range of outcomes) · adult women diagnosed with early stage (I to IIa) endometrial cancer undergoing surgery as primary treatment.

Laparoscopy showed no clear difference in serious adverse events (range of outcomes) compared with laparotomy (low certainty).

1 finding from 1 review

PAAP vs no PAAP

Serious adverse events (including mortality) · adults with asthma

It is very uncertain whether PAAP changes serious adverse events (including deaths). compared with no PAAP (very low certainty).

1 finding from 1 review

Cediranib plus chemotherapy vs placebo plus chemotherapy

Specific adverse events: serious haemorrhage · women with persistent, recurrent, or metastatic cervical cancer

It is very uncertain whether cediranib plus chemotherapy changes specific adverse events: serious haemorrhage compared with placebo plus chemotherapy (very low certainty).

1 finding from 1 review

Cediranib plus chemotherapy vs placebo plus chemotherapy

Specific adverse events: serioushypertension · women with persistent, recurrent, or metastatic cervical cancer

It is very uncertain whether cediranib plus chemotherapy changes specific adverse events: serioushypertension compared with placebo plus chemotherapy (very low certainty).

1 finding from 1 review