Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

103 questions · 109 findings · 11 reviews

No studies found 20 · 18.3%GRADE not reported 4 · 3.7%Very low 12 · 11%Low 35 · 32.1%Moderate 28 · 25.7%High 10 · 9.2%

Anticoagulant vs control

Dead or dependent · acute presumed ischaemic stroke

Summary of findings table ‐ Anticoagulant showed no clear difference in dead or dependent at end of compared with control (high certainty).

1 finding from 1 review

Anticoagulant vs control

Death during study period · acute presumed ischaemic stroke

Summary of findings table ‐ Anticoagulant showed no clear difference in death from all causes during treatment period compared with control (low certainty).

1 finding from 1 review

Anticoagulant vs control

Deep vein thrombosis · acute presumed ischaemic stroke

It is very uncertain whether summary of findings table ‐ Anticoagulant changes deep vein thrombosis during treatment period compared with control (very low certainty).

1 finding from 1 review

Anticoagulant vs control

Recurrent ischaemic or unknown stroke during treatment period · acute presumed ischaemic stroke

Summary of findings table ‐ Anticoagulant probably leads to lower recurrent ischaemic or unknown stroke during treatment period compared with control (moderate certainty).

1 finding from 1 review

Anticoagulant vs control

Symptomatic intracranial haemorrhage during treatment period · acute presumed ischaemic stroke

Summary of findings table ‐ Anticoagulant probably leads to higher symptomatic intracranial haemorrhage during treatment period compared with control (moderate certainty).

1 finding from 1 review

Anticoagulant vs control

Symptomatic PE · acute presumed ischaemic stroke

Summary of findings table ‐ Anticoagulant leads to lower symptomatic pulmonary embolism during treatment period compared with control (high certainty).

1 finding from 1 review

Anticoagulant vs control

Major extracranial haemorrhage during treatment period · acute presumed ischaemic stroke

Summary of findings table ‐ Anticoagulant probably leads to higher major extracranial haemorrhage during treatment period compared with control (moderate certainty).

1 finding from 1 review

Non‐vitamin‐K‐antagonist oral anticoagulants vs placebo

Apixaban (all doses combined) vs placebo · adults after AMI without an indication for anticoagulation
3 findings from 1 review

Non‐vitamin‐K‐antagonist oral anticoagulants vs placebo

Rivaroxaban (all doses combined) vs placebo · adults after AMI without an indication for anticoagulation
3 findings from 1 review

Non‐vitamin‐K‐antagonist oral anticoagulants vs placebo

Dabigatran (all doses combined) vs placebo · adults after AMI without an indication for anticoagulation
3 findings from 1 review

Anticoagulants (chosen at investigators' discretion) vs placebo

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

Anticoagulants (chosen at investigators' discretion) showed no clear difference in symptomatic VTE (DVT and PE) Treatment duration 28 ‐ 42 days compared with placebo (low certainty).

1 finding from 1 review

Anticoagulants (chosen at investigators' discretion) vs placebo

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

Anticoagulants (chosen at investigators' discretion) showed no clear difference in symptomatic DVT (proximal or distal) Treatment duration 28 ‐ 42 days compared with placebo (low certainty).

1 finding from 1 review

Anticoagulants (chosen at investigators' discretion) 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

Anticoagulants (chosen at investigators' discretion) showed no clear difference in symptomatic PE Treatment duration 28 ‐ 42 days compared with placebo (low certainty).

1 finding from 1 review

Anticoagulants (chosen at investigators' discretion) vs placebo

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

Anticoagulants (chosen at investigators' discretion) showed no clear difference in bleeding ‐ major Treatment duration 28 ‐ 42 days compared with placebo (low certainty).

1 finding from 1 review

Anticoagulants (chosen at investigators' discretion) 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

Direct oral anticoagulant (DOAC) prophylaxis vs no prophylaxis

All‐cause mortality · ambulatory people with cancer without venous thromboembolism receiving systemic therapy

Direct oral anticoagulant (DOAC) prophylaxis showed no clear difference in mortality compared with no prophylaxis (moderate certainty).

1 finding from 1 review