Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,918 questions · 5,537 findings · 1,803 reviews

No studies found 1,309 · 23.6%GRADE not reported 440 · 7.9%Very low 1,560 · 28.2%Low 1,292 · 23.3%Moderate 751 · 13.6%High 185 · 3.3%

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Very potent vs potent topical corticosteroid

Local adverse events: skin thinning; end of treatment (1 to 3 weeks) · adults with eczema

It is very uncertain whether very potent changes local adverse events: skin thinning; end of treatment (day 11‐day 22) compared with potent topical corticosteroid (very low certainty).

1 finding from 1 review

Multi‐component intervention vs other treatments/routine care

Number of participants experiencing any serious adverse events · the management of chronic obstructive pulmonary disease

Multi‐component intervention showed no clear difference in adverse events: number of people experiencing a serious adverse event compared with other intervention or routine, usual care or control treatment (low certainty).

1 finding from 1 review

Rituximab vs placebo

Serious adverse events measured by clinical assessment over 12 months · relapsing multiple sclerosis

It is very uncertain whether rituximab as 'switching' changes serious adverse events measured by clinical assessment over 12 months compared with placebo (very low certainty).

1 finding from 1 review

Rituximab vs placebo

Serious adverse events measured by clinical assessment over 12 months · primary progressive multiple sclerosis

Rituximab as 'first choice' showed no clear difference in serious adverse events measured by clinical assessment over 28 months compared with placebo (low certainty).

1 finding from 1 review

Chlorhexidine vs povidone‐iodine

Adverse events (maternal) ‐ skin irritation or allergic skin reaction · women undergoing caesarean section

It is very uncertain whether chlorhexidine gluconate changes adverse events (maternal) ‐ skin irritation or allergic skin reaction compared with povidone iodine (very low certainty).

1 finding from 1 review

Valproate vs RISPERIDONE

Adverse effects: 1. Sedation · Children and adolescents with acute mania

It is very uncertain whether valproate changes adverse events ‐ Sedation At 8 weeks (secondary tolerability outcome) compared with risperidone (very low certainty).

1 finding from 1 review

Methotrexate vs placebo

Withdrawals due to adverse events · psoriatic arthritis

Methotrexate showed no clear difference in withdrawals due to adverse events (WAEs) assessed by number of events compared with placebo (low certainty).

1 finding from 1 review

Intervention vs no intervention or control intervention (control)

Adverse events (proportion) ‐ interferon‐alpha versus no intervention · people with acute hepatitis C infection

It is very uncertain whether intervention changes adverse events (proportion) ‐ interferon‐alpha versus no intervention compared with no intervention or control intervention (control) (very low certainty).

1 finding from 1 review

Comparison 13: SSRIs vs placebo

Dropouts due to adverse events · adults with SAnD

It is very uncertain whether comparison 13: SSRIs changes dropouts due to adverse events (long term) Post‐treatment: 1‐4 months compared with placebo (very low certainty).

1 finding from 1 review

Botulinum toxin type A vs botulinum toxin type B

Adverse events: sore throat/dry mouth № of participants: 212 (2 RCTs) · adults with cervical dystonia

Botulinum toxin type A probably leads to higher adverse events: sore throat/dry mouth № of participants: 212 (2 RCTs) compared with botulinum toxin type B (moderate certainty).

1 finding from 1 review

PERPHENAZINE vs antipsychotics

Other adverse events: any serious adverse event ‐ short and long term · patients with schizophrenia

It is very uncertain whether PERPHENAZINE changes other adverse events: any serious adverse event ‐ short and long term compared with ANY ANTIPSYCHOTICS (very low certainty).

1 finding from 1 review

Intervention not reported

Number of participants who withdraw because of adverse events (median · participants with osteoarthritis of the knee

The intervention showed no clear difference in number of participants who withdraw because of adverse events (median (low certainty).

1 finding from 1 review

Cannabidiol vs AMISULPRIDE

Adverse effects: measured adverse events ‐ medium term ‐ not measured · patients with schizophrenia

The review found no eligible studies for this question.

1 finding from 1 review