Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

69 questions · 69 findings · 9 reviews

No studies found 31 · 44.9%GRADE not reported 0 · 0%Very low 8 · 11.6%Low 29 · 42%Moderate 1 · 1.4%High 0 · 0%

Subcutaneous unfractionated heparin vs unfractionated heparin

Symptomatic recurrent VTE at 3 months · people aged ≥ 18 years with a diagnosis of new or recurrent VTE

Subcutaneous unfractionated heparin showed no clear difference in symptomatic recurrent VTE at 3 months compared with intravenous unfractionated heparin (low certainty).

1 finding from 1 review

Subcutaneous unfractionated heparin vs unfractionated heparin

Symptomatic recurrent DVT at 3 months · people aged ≥ 18 years with a diagnosis of new or recurrent VTE

Subcutaneous unfractionated heparin showed no clear difference in symptomatic recurrent DVT at 3 months compared with intravenous unfractionated heparin (low certainty).

1 finding from 1 review

Subcutaneous unfractionated heparin vs unfractionated heparin

VTE‐related mortality4 · people aged ≥ 18 years with a diagnosis of new or recurrent VTE

Subcutaneous unfractionated heparin showed no clear difference in VTE‐related mortality at 3 months compared with intravenous unfractionated heparin (low certainty).

1 finding from 1 review

Subcutaneous unfractionated heparin vs unfractionated heparin

Major bleedingd (3 months) · people aged ≥ 18 years with a diagnosis of new or recurrent VTE

Subcutaneous unfractionated heparin showed no clear difference in major bleedingd (7 days ‐ 12 months) compared with intravenous unfractionated heparin (low certainty).

1 finding from 1 review

Subcutaneous unfractionated heparin vs unfractionated heparin

All‐cause mortality (5 days to 12 months) · people aged ≥ 18 years with a diagnosis of new or recurrent VTE

Subcutaneous unfractionated heparin showed no clear difference in all‐cause mortality (5 days to 12 months) compared with intravenous unfractionated heparin (low certainty).

1 finding from 1 review

Subcutaneous unfractionated heparin vs low molecular weight heparin

VTE‐related mortality4 · people aged ≥ 18 years with a diagnosis of new or recurrent VTE

Subcutaneous unfractionated heparin showed no clear difference in VTE‐related mortality at 3 months compared with low molecular weight heparin (low certainty).

1 finding from 1 review

Subcutaneous unfractionated heparin vs low molecular weight heparin

Major bleedingd (3 months) · people aged ≥ 18 years with a diagnosis of new or recurrent VTE

Subcutaneous unfractionated heparin showed no clear difference in major bleedingd (3 months) compared with low molecular weight heparin (low certainty).

1 finding from 1 review

Subcutaneous unfractionated heparin vs low molecular weight heparin

All‐cause mortality (7 days ‐ 3 months) · people aged ≥ 18 years with a diagnosis of new or recurrent VTE

Subcutaneous unfractionated heparin showed no clear difference in all‐cause mortality (7 days ‐ 3 months) compared with low molecular weight heparin (low certainty).

1 finding from 1 review

Subcutaneous unfractionated heparin vs low molecular weight heparin

Symptomatic recurrent VTE at 3 months · people aged ≥ 18 years with a diagnosis of new or recurrent VTE

Subcutaneous unfractionated heparin showed no clear difference in symptomatic recurrent VTE at 3 months compared with low molecular weight heparin (low certainty).

1 finding from 1 review

Subcutaneous unfractionated heparin vs low molecular weight heparin

Symptomatic recurrent DVT at 3 months · people aged ≥ 18 years with a diagnosis of new or recurrent VTE

Subcutaneous unfractionated heparin showed no clear difference in symptomatic recurrent DVT at 3 months compared with low molecular weight heparin (low certainty).

1 finding from 1 review

Unfractionated heparin vs low molecular weight heparin

DVT (symptomatic, asymptomatic, non‐fatal) · people undergoing major amputation of the lower extremity

It is very uncertain whether unfractionated heparin changes DVT (symptomatic, asymptomatic, non‐fatal) (5 to 8 days after surgery) compared with low molecular weight heparin (very low certainty).

1 finding from 1 review