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%

Intervention not reported

HIT in people undergoing major surgical procedures · people undergoing surgical procedures and treated with UFH or LMWH for prophylaxis of thrombotic events lasting at least 5 days

The intervention may leads to lower HIT in people undergoing major surgical procedures (low certainty).

1 finding from 1 review

Intervention not reported

HIT complicated by venous thromboembolism · people undergoing surgical procedures and treated with UFH or LMWH for prophylaxis of thrombotic events lasting at least 5 days

The intervention may leads to lower HIT complicated by venous thromboembolism (low certainty).

1 finding from 1 review