Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

313 questions · 322 findings · 26 reviews

No studies found 58 · 18%GRADE not reported 16 · 5%Very low 41 · 12.7%Low 94 · 29.2%Moderate 83 · 25.8%High 30 · 9.3%

Vitamin K antagonists vs heparin

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

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

1 finding from 1 review

DOAC vs heparin

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

DOAC 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

DOAC vs heparin

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

DOAC 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

DOAC 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

DOAC showed no clear difference in symptomatic PE Treatment duration 28 ‐ 42 days compared with heparin (moderate certainty).

1 finding from 1 review

DOAC vs heparin

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

DOAC showed no clear difference in bleeding ‐ major Treatment duration 28 ‐ 42 days compared with heparin (high certainty).

1 finding from 1 review

DOAC vs heparin

Clinically relevant non‐major bleeding Treatment duration 28 ‐ 42 days · people requiring prevention of venous thromboembolism following total hip or knee replacement or hip fracture repair

DOAC showed no clear difference in bleeding ‐ clinically relevant, non‐major Treatment duration 28 ‐ 42… compared with heparin (high certainty).

1 finding from 1 review

DOAC vs heparin

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

DOAC showed no clear difference in bleeding ‐ minor Treatment duration 28 ‐ 42 days compared with heparin (high certainty).

1 finding from 1 review

Heparin vs placebo

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

Heparin showed no clear difference in bleeding ‐ major Treatment duration 28 ‐ 42 days compared with placebo (moderate certainty).

1 finding from 1 review

Heparin vs placebo

Clinically relevant non‐major bleeding Treatment duration 28 ‐ 42 days · people requiring prevention of venous thromboembolism following total hip or knee replacement or hip fracture repair

The review found no eligible studies for this question.

1 finding from 1 review

Heparin vs placebo

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

Heparin leads to higher bleeding ‐ minor Treatment duration 28 ‐ 42 days compared with placebo (high certainty).

1 finding from 1 review

Vitamin K antagonists vs placebo

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 placebo (moderate certainty).

1 finding from 1 review

Vitamin K antagonists vs placebo

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 placebo (moderate certainty).

1 finding from 1 review

Vitamin K antagonists vs placebo

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 placebo (moderate certainty).

1 finding from 1 review