Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,514 questions · 1,543 findings · 649 reviews

No studies found 224 · 14.5%GRADE not reported 105 · 6.8%Very low 383 · 24.8%Low 447 · 29%Moderate 293 · 19%High 91 · 5.9%

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

Paracetamol vs placebo

Maternal adverse events · women who have given birth vaginally, requiring analgesia for after‐birth pains.

It is very uncertain whether paracetamol changes maternal adverse events (up to 4 hours and at 6 hours) compared with placebo (very low certainty).

1 finding from 1 review

Aspirin vs placebo

Adverse events in the child ‐ Congenital malformations · women with persistent antiphospholipid antibodies and recurrent pregnancy loss

It is very uncertain whether aspirin changes adverse events in the child ‐ Congenital malformations compared with placebo (very low certainty).

1 finding from 1 review

NSAIDs vs placebo

Proportion of participants experiencing adverse events · Patients with acute low‐back pain

It is very uncertain whether NSAIDs changes proportion of participants experiencing adverse events compared with placebo (very low certainty).

1 finding from 1 review

Tramadol vs placebo

Number experiencing adverse effects · Patients with osteoarthritis of the knee or hip

Tramadol alone probably leads to higher number of participants experiencing any adverse events compared with placebo (moderate certainty).

1 finding from 1 review

Group A: amino acids vs placebo

Adverse effects: suicidal thoughts (events) · people in the prodromal stage of psychosis

It is very uncertain whether group A: amino acids changes adverse effects: suicidal thoughts Short‐term (events) compared with placebo (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

Prebiotic vs placebo

Withdrawals due to adverse events · people with histologically confirmed diagnosis of ulcerative colitis in remission

It is very uncertain whether prebiotics changes withdrawals due to adverse events (60 days to 6 months) compared with placebo (very low 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

Monthly pegloticase vs placebo

Withdrawals due to adverse events · participants with tophi in gout

Monthly pegloticase probably leads to higher number of participant withdrawals due to adverse events compared with placebo (moderate certainty).

1 finding from 1 review

Pegloticase every two weeks (biweekly) vs placebo

Withdrawals due to adverse events · participants with tophi in gout

Pegloticase every two weeks (biweekly) probably leads to higher number of participant withdrawals due to adverse events compared with placebo (moderate certainty).

1 finding from 1 review

Anti‐IL‐5 mAb (mepolizumab) vs placebo (on top of topical steroids)

Adverse events ‐ nasopharyngitis, including sore throat · patients with severe chronic rhinosinusitis with nasal polyps

Anti‐IL‐5 mAb (mepolizumab) showed no clear difference in adverse events ‐ nasopharyngitis, including sore throat compared with placebo (on top of topical steroids) (low certainty).

1 finding from 1 review

Anti‐IgE mAb (omalizumab) vs placebo (on top of topical steroids)

Adverse events ‐ nasopharyngitis, including sore throat · patients with chronic rhinosinusitis with nasal polyps

Anti‐IgE mAb (omalizumab) showed no clear difference in adverse events ‐ nasopharyngitis, including sore throat compared with placebo (on top of topical steroids) (low certainty).

1 finding from 1 review