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%

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

Combinations of antipsychotic drugs vs single antipsychotic drugs

Adverse events: Serious event or requiring discontinuation · schizophrenia or related disorders

It is very uncertain whether combinations of antipsychotic drugs changes adverse events: Serious event or requiring discontinuation compared with single antipsychotic drugs (very low certainty).

1 finding from 1 review

Band ligation vs no intervention or a sham procedure

Serious adverse events Idiopathic thrombocytopaenic purpura · children with portal hypertension and large oesophageal varices, without previous gastrointestinal bleeding or beta‐blocker treatment

It is very uncertain whether band ligation changes serious adverse events Idiopathic thrombocytopaenic purpura compared with sham or no intervention (very low certainty).

1 finding from 1 review

Sunitinib vs IFN‐α (targeted agent versus classic immunotherapy)

Serious adverse events (Grade 3 or 4) · Treatment‐naïve metastatic renal cell carcinoma (clear cell type)

Sunitinib probably leads to higher serious adverse events (Grade 3 or 4)assessed as: CTCAE v3.0 compared with interferon‐α (IFN‐α) (targeted agent versus classic immunotherapy) (moderate certainty).

1 finding from 1 review

Intervention not reported

Serious Adverse Events (Participants with one or more event) · Adults (>18 years) with pulmonary hypertension of varied aetiology (PAH, CTEPH and left heart disease)

It is very uncertain whether the intervention changes serious Adverse Events (Participants with one or more event) (very low certainty).

1 finding from 1 review

TDC vs medical therapy

Secondary outcome:total serious adverse events at the end of · people with patent foramen ovale and a history of cryptogenic stroke or transient ischemic attack

TDC showed no clear difference in secondary outcome:total serious adverse events at the end of compared with medical therapy (low 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

Oral iron sulphate vs oral iron hydroxide polymaltose complex

Serious adverse events ‐ active or inactive disease (14 days) · IBD patients

It is very uncertain whether oral iron sulphate changes serious adverse events ‐ active or inactive disease (14 days) compared with oral iron hydroxide polymaltose complex (very low certainty).

1 finding from 1 review

Intervention not reported

Participants with non‐serious adverse events: up to 3 months' · participants with alcoholic hepatitis at high risk of mortality and morbidity

It is very uncertain whether the intervention changes participants with non‐serious adverse events: up to 3 months' (very low certainty).

1 finding from 1 review