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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Sclerotherapy (hypertonic glucose plus polidocanol) vs sclerotherapy (hypertonic glucose)

Adverse events ‐ hyperpigmentation ( · people with telangiectasias and reticular veins

Sclerotherapy (hypertonic glucose plus polidocanol) showed no clear difference in adverse events ‐ hyperpigmentation ( compared with sclerotherapy (hypertonic glucose) (moderate certainty).

1 finding from 1 review

Pazopanib plus lapatinib vs lapatinib

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

It is very uncertain whether pazopanib plus lapatinib changes specific adverse events: haemorrhage compared with lapatinib (very low certainty).

1 finding from 1 review

Probiotics vs placebo

Withdrawals due to adverse events · induction of remission in Crohn's disease

It is very uncertain whether probiotics changes adverse events leading to withdrawal compared with placebo (very low certainty).

1 finding from 1 review

Combined oral contraceptive pill vs levonorgestrel intrauterine system

Adverse effects ‐ Any adverse events · heavy menstrual bleeding

It is very uncertain whether combined oral contraceptive pill changes adverse effects ‐ Any adverse events compared with levonorgestrel‐releasing intrauterine system (very low certainty).

1 finding from 1 review

IV cyclophosphamide vs IV dexamethasone and oral cyclophosphamide

Adverse effects ‐ Bacterial infection clinical assessment · idiopathic steroid‐resistant nephrotic syndrome in children

IV cyclophosphamide showed no clear difference in adverse events: bacterial infections compared with oral cyclophosphamide plus IV dexamethasone (low certainty).

1 finding from 1 review

Intervention not reported

All adverse events and complications · people with liver metastases

The intervention led to higher all adverse events and complications; GRADE not reported.

1 finding from 1 review

Antifibrinolytic therapy (tranexamic acid or epsilon aminocaproic acid) vs Placebo, no intervention or usual care (with or without placebo)

Side effects or other adverse events · People with haemophilia (A or B) undergoing minor oral surgery or dental extractions

Antifibrinolytic therapy (tranexamic acid or epsilon aminocaproic… showed no clear difference in side effects or other adverse events compared with placebo, no intervention or usual care (with or without placebo) (low certainty).

1 finding from 1 review