Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

254 questions · 255 findings · 98 reviews

No studies found 91 · 35.7%GRADE not reported 15 · 5.9%Very low 85 · 33.3%Low 36 · 14.1%Moderate 21 · 8.2%High 7 · 2.7%

Oral propranolol vs placebo

Adverse events experienced at short or long term ‐ Serious adverse events 24 weeks' · infantile haemangiomas (strawberry birthmarks) of the skin

Oral propranolol showed no clear difference in adverse events experienced at short or long term ‐ Serious adverse… compared with placebo (low certainty).

1 finding from 1 review

Chemical peeling vs placebo or no treatment

Serious or severe adverse events N of participants with positive severe adverse events · people with acne scars

It is very uncertain whether chemical peeling changes serious or severe adverse events N of participants with positive… compared with placebo or no treatment (very low certainty).

1 finding from 1 review

Intervention not reported

Adverse events a. Serious adverse events b. Discontinuation of trial because of adverse events · obese children and adolescents

The intervention showed no clear difference in adverse events a. Serious adverse events b. Discontinuation of trial… (low certainty).

1 finding from 1 review

Palliative care vs usual care

Adverse effects: at least one serious adverse event · adults with multiple sclerosis Interventions: immunosuppressive and immunomodulatory drugs Comparator: placebo Outcome: withdrawals due to…

Palliative care showed no clear difference in serious adverse events Assessed by: number of participants… compared with usual care (low certainty).

1 finding from 1 review

Calcineurin inhibitor vs IV cyclophosphamide

Adverse events: treatment failure (non response, serious infection, persistently elevated creatinine) at 6 months · idiopathic steroid‐resistant nephrotic syndrome in children

Calcineurin inhibitor probably leads to lower adverse events: treatment failure at 6 months (non response, serious… compared with IV cyclophosphamide (moderate certainty).

1 finding from 1 review

Intervention not reported

Serious adverse events for all placebos compared with wait‐list or no treatment (Spontaneous reporting of dichotomous outcomes) (Post‐treatment) · patients with mental health disorders

It is very uncertain whether the intervention changes serious adverse events for all placebos compared with wait‐list or… (very low certainty).

1 finding from 1 review

Intervention not reported

Non‐serious adverse events for all placebos compared with wait‐list or no treatment (Spontaneous reporting of dichotomous outcomes) (Post‐treatment) · patients with mental health disorders

It is very uncertain whether the intervention changes non‐serious adverse events for all placebos compared with wait‐list… (very low certainty).

1 finding from 1 review