Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

461 questions · 487 findings · 44 reviews · Headline outcomes only

No studies found 117 · 24%GRADE not reported 31 · 6.4%Very low 131 · 26.9%Low 133 · 27.3%Moderate 61 · 12.5%High 14 · 2.9%

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

Major bleeding · patients with cancer with venous thromboembolism

Direct oral anticoagulant secondary prophylaxis showed no clear difference in major 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

Major GI bleeding · patients with cancer with venous thromboembolism

Direct oral anticoagulant secondary prophylaxis showed no clear difference in major 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

Major upper GI bleeding · patients with cancer with venous thromboembolism

It is very uncertain whether direct oral anticoagulant secondary prophylaxis changes major 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

Major lower GI bleeding · patients with cancer with venous thromboembolism

It is very uncertain whether direct oral anticoagulant secondary prophylaxis changes major lower 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

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

It is very uncertain whether direct oral anticoagulant secondary prophylaxis changes major non‐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 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

Vitamin K antagonists vs heparin

Symptomatic VTE · people requiring prevention of venous thromboembolism following total hip or knee replacement or hip fracture repair

Vitamin K antagonists showed no clear difference in symptomatic VTE (DVT and PE) Treatment duration 28 ‐ 42 days compared with heparin (low certainty).

1 finding from 1 review

Vitamin K antagonists vs heparin

Symptomatic DVT · people requiring prevention of venous thromboembolism following total hip or knee replacement or hip fracture repair

Vitamin K antagonists showed no clear difference in symptomatic DVT (proximal or distal) Treatment duration 28 ‐ 42 days compared with heparin (low certainty).

1 finding from 1 review

Vitamin K antagonists vs heparin

Symptomatic PE Treatment duration 28 ‐ 42 days · people requiring prevention of venous thromboembolism following total hip or knee replacement or hip fracture repair

Vitamin K antagonists showed no clear difference in symptomatic PE Treatment duration 28 ‐ 42 days compared with heparin (low certainty).

1 finding from 1 review

Vitamin K antagonists vs heparin

Major bleeding · people requiring prevention of venous thromboembolism following total hip or knee replacement or hip fracture repair

Vitamin K antagonists may leads to higher bleeding ‐ major Treatment duration 28 ‐ 42 days compared with heparin (low certainty).

1 finding from 1 review