Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

449 questions · 459 findings · 247 reviews

No studies found 75 · 16.3%GRADE not reported 13 · 2.8%Very low 119 · 25.9%Low 139 · 30.3%Moderate 86 · 18.7%High 27 · 5.9%

PERPHENAZINE vs placebo

Adverse events: serious adverse events ‐ not reported · patients with schizophrenia

The review found no eligible studies for this question.

1 finding from 1 review

Ocrelizumab vs placebo

Number of participants with any serious adverse events · primary progressive multiple sclerosis

Ocrelizumab showed no clear difference in number of participants with any serious adverse events compared with placebo (low certainty).

1 finding from 1 review

Cediranib plus chemotherapy vs placebo plus chemotherapy

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

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

1 finding from 1 review

Human recombinant activated protein C vs placebo

Serious adverse events (adult and paediatric patients) · patients with severe sepsis or septic shock

Human recombinant activated protein C showed no clear difference in serious adverse events (adult and paediatric patients) compared with placebo (moderate certainty).

1 finding from 1 review

Music therapy vs placebo or usual care

Adverse events Any serious or non‐serious adverse event · Individuals with autism spectrum disorder

Music therapy showed no clear difference in adverse events Any serious or non‐serious adverse event compared with placebo therapy or standard care (moderate certainty).

1 finding from 1 review

Summary of findings table ‐ Rifaximin vs placebo or no intervention

Non‐serious adverse events ‐ total number of particiapnts · prevention and treatment of hepatic encephalopathy in people with cirrhosis

It is very uncertain whether summary of findings table ‐ Rifaximin changes non‐serious adverse events ‐ total number of particiapnts compared with placebo/no intervention (very low certainty).

1 finding from 1 review

Induced hypertension vs placebo or no intervention

Proportion of participants with ≥ 1 serious adverse events · people with acute subarachnoid haemorrhage

It is very uncertain whether induced hypertension changes proportion of participants with ≥ 1 serious adverse events compared with placebo or no intervention (very low certainty).

1 finding from 1 review

Rivastigmine vs placebo

Serious adverse events (excluding death) at 24 to 26 weeks · vascular dementia and other vascular cognitive impairments

Rivastigmine showed no clear difference in serious adverse events (excluding death) at 24 to 26 weeks compared with placebo (low certainty).

1 finding from 1 review

Methotrexate vs placebo

SAEs · psoriatic arthritis

Methotrexate showed no clear difference in serious adverse events (SAEs) assessed by number of events compared with placebo (low certainty).

1 finding from 1 review

Indacaterol vs long‐acting beta2‐agonist alone

Serious adverse events Adverse events · patients with chronic obstructive pulmonary disease

Indacaterol showed no clear difference in serious adverse events Adverse events compared with twice‐daily long‐acting beta2‐agonists (moderate certainty).

1 finding from 1 review

Antibiotic prophylaxis before dental procedure vs placebo or no prophylaxis

Mortality or serious adverse events requiring hospital admission · Adults or children at increased risk of bacterial endocarditis (pre-existing cardiac condition) undergoing an invasive dental procedure

The review found no eligible studies for this question.

1 finding from 1 review

Probiotics vs placebo

Adverse events (serious adverse reaction and adverse reaction) · children and adults with CF

Probiotics showed no clear difference in adverse events (serious adverse reaction and adverse reaction) compared with placebo (low certainty).

1 finding from 1 review