Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

3,234 questions · 3,357 findings · 396 reviews

No studies found 803 · 23.9%GRADE not reported 270 · 8%Very low 757 · 22.5%Low 859 · 25.6%Moderate 486 · 14.5%High 182 · 5.4%

Low molecular weight heparin vs vitamin K antagonist (VKA)

Minor bleeding · people with cancer with thrombosis prophylaxis and central venous catheters

It is very uncertain whether low‐molecular‐weight heparin (LMWH) changes minor bleeding (up to 3 months) compared with vitamin K antagonist (VKA) (very low certainty).

1 finding from 1 review

Direct oral anticoagulant secondary prophylaxis vs vitamin K antagonist secondary prophylaxis

Minor bleeding · patients with active cancer with venous thromboembolism

Direct oral anticoagulant secondary prophylaxis showed no clear difference in minor bleeding compared with vitamin K antagonist secondary prophylaxis (low certainty).

1 finding from 1 review

Direct oral anticoagulant secondary prophylaxis vs Low molecular weight heparin secondary prophylaxis

Minor bleeding · patients with cancer with venous thromboembolism

Direct oral anticoagulant secondary prophylaxis probably leads to higher minor bleeding compared with low molecular weight heparin secondary prophylaxis (moderate certainty).

1 finding from 1 review

Direct oral anticoagulant secondary prophylaxis vs Low molecular weight heparin secondary prophylaxis

Minor GI bleeding · patients with cancer with venous thromboembolism

It is very uncertain whether direct oral anticoagulant secondary prophylaxis changes minor GI bleeding compared with low molecular weight heparin secondary prophylaxis (very low certainty).

1 finding from 1 review

Direct oral anticoagulant secondary prophylaxis vs Low molecular weight heparin secondary prophylaxis

Minor upper GI bleeding · patients with cancer with venous thromboembolism

It is very uncertain whether direct oral anticoagulant secondary prophylaxis changes minor upper GI bleeding compared with low molecular weight heparin secondary prophylaxis (very low certainty).

1 finding from 1 review

Direct oral anticoagulant secondary prophylaxis vs Low molecular weight heparin secondary prophylaxis

Minor lower GI bleeding · patients with cancer with venous thromboembolism

Direct oral anticoagulant secondary prophylaxis showed no clear difference in minor lower GI bleeding compared with low molecular weight heparin secondary prophylaxis (low certainty).

1 finding from 1 review

Direct oral anticoagulant secondary prophylaxis vs Low molecular weight heparin secondary prophylaxis

Minor non‐GI bleeding · patients with cancer with venous thromboembolism

Direct oral anticoagulant secondary prophylaxis probably leads to higher minor non‐GI bleeding compared with low molecular weight heparin secondary prophylaxis (moderate certainty).

1 finding from 1 review

Low molecular weight heparin vs vitamin K antagonist secondary prophylaxis

Minor bleeding (main analysis ‐ active cancer) · patients with cancer with venous thromboembolism

It is very uncertain whether low molecular weight heparin secondary prophylaxis changes minor bleeding (main analysis ‐ active cancer) compared with vitamin K antagonist secondary prophylaxis (very low certainty).

1 finding from 1 review

Lower vs higher oxygen concentrations titrated to target oxygen saturations during resuscitation of preterm infants at birth

Severe (defined as stage 3 or greater) retinopathy of prematurity ‐ not reported · preterm infants

Lower showed no clear difference in severe retinopathy of prematurity (≥ stage 3) compared with higher oxygen concentrations titrated to target oxygen saturations… (low certainty).

1 finding from 1 review