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Search review questions

Each row is one question a systematic review asked: who, what, compared with what, and which outcome, with the effect it found and how certain that is. Words match anywhere in the field.

Limit to evidence status or GRADE (optional)

1,558 questions in 115 reviews · Vascular

current versions
No studies 346 · 22.2%Ungraded 90 · 5.8%Very low 281 · 18%Low 477 · 30.6%Moderate 313 · 20.1%High 51 · 3.3%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

QuestionEffectEvidenceStatus / GRADE
Fondaparinux vs variable dose warfarin
All causes of death · patients requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 236 participantsVery low
Fondaparinux vs 1 mg warfarin
Total VTE · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
RR 0.2 [0.01, 4.12]1 study · 236 participantsVery low
Fondaparinux vs 1 mg warfarin
Symptomatic VTE · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 236 participantsVery low
Fondaparinux vs 1 mg warfarin
Total DVT · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
RR 0.2 [0.01, 4.12]1 study · 236 participantsVery low
Fondaparinux vs 1 mg warfarin
Proximal DVT · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 236 participantsVery low
Fondaparinux vs 1 mg warfarin
Total PE · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 236 participantsVery low
Fondaparinux vs 1 mg warfarin
Major bleeding · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
RR 3 [0.32, 28.43]1 study · 236 participantsVery low
Fondaparinux vs 1 mg warfarin
All causes of death · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 236 participantsVery low
Fondaparinux vs edoxaban
Total VTE · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 38 participantsVery low
Fondaparinux vs placebo
Total DVT · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
RR 0.25 [0.15, 0.4]8 studies · 5715 participantsModerate
Fondaparinux vs edoxaban
Symptomatic VTE · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 38 participantsVery low
Fondaparinux vs edoxaban
Total DVT · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 38 participantsVery low
Fondaparinux vs edoxaban
Proximal DVT · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 38 participantsUngraded
Fondaparinux vs edoxaban
Total PE · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 38 participantsVery low
Fondaparinux vs edoxaban
Major bleeding · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 38 participantsVery low
Fondaparinux vs edoxaban
All causes of death · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 38 participantsVery low
Fondaparinux vs mechanical thromboprophylaxis
Total VTE · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
RR 0.61 [0.22, 1.67]1 study · 99 participantsLow
Fondaparinux vs mechanical thromboprophylaxis
Symptomatic VTE · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 120 participantsLow
Fondaparinux vs mechanical thromboprophylaxis
Total DVT · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
RR 0.63 [0.23, 1.72]1 study · 100 participantsLow
Fondaparinux vs mechanical thromboprophylaxis
Proximal DVT · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 105 participantsLow
Fondaparinux vs placebo
Proximal DVT · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
RR 0.12 [0.04, 0.39]7 studies · 2746 participantsModerate
Fondaparinux vs mechanical thromboprophylaxis
Total PE · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 120 participantsLow
Fondaparinux vs mechanical thromboprophylaxis
Major bleeding · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 120 participantsLow
Fondaparinux vs mechanical thromboprophylaxis
All causes of death · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 120 participantsLow
Fondaparinux vs placebo
Total PE · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
RR 0.16 [0.04, 0.62]8 studies · 6412 participantsHigh
Fondaparinux vs placebo
Major bleeding · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
RR 2.56 [1.48, 4.44]8 studies · 6659 participantsModerate
Fondaparinux vs placebo
All causes of death · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
RR 0.76 [0.48, 1.22]8 studies · 6674 participantsModerate
Fondaparinux vs LMWH
Total VTE · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
RR 0.55 [0.42, 0.73]11 studies · 9339 participantsModerate
Fondaparinux vs LMWH
Symptomatic VTE · people requiring prevention of venous thromboembolism
Pentasaccharides for the prevention of venous thromboembolism (2016) · Cochrane
RR 1.03 [0.65, 1.63]9 studies · 12240 participantsModerate
Padma 28 vs placebo
Pain free walking distance (PFWD) · people with symptomatic intermittent claudication
Padma 28 for intermittent claudication (2016) · Cochrane
no estimate extracted2 studies · 79 participantsUngraded
Padma 28 vs placebo
Change in maximum walking distance (MWD) · people with symptomatic intermittent claudication
Padma 28 for intermittent claudication (2016) · Cochrane
no estimate extracted1 study · 100 participantsLow
Padma 28 vs placebo
Final value MWD · people with symptomatic intermittent claudication
Padma 28 for intermittent claudication (2016) · Cochrane
no estimate extracted2 studies · 193 participantsVery low
Padma 28 vs placebo
Adverse effects · people with symptomatic intermittent claudication
Padma 28 for intermittent claudication (2016) · Cochrane
OR 1.09 [0.42, 2.83]4 studies · 231 participantsVery low
Padma 28 vs placebo
Final value ankle brachial index (ABI) · people with symptomatic intermittent claudication
Padma 28 for intermittent claudication (2016) · Cochrane
no estimate extracted1 study · 56 participantsVery low
Padma 28 vs placebo
Change in ABI · people with symptomatic intermittent claudication
Padma 28 for intermittent claudication (2016) · Cochrane
no estimate extracted1 study · 56 participantsVery low
10 mg warfarin nomogram vs 5 mg warfarin nomogram
Therapeutic INR INR TEST · patients with venous thromboembolism.
Warfarin initiation nomograms for venous thromboembolism (2016) · Cochrane
RR 1.27 [1.05, 1.54]3 studies · 383 participantsModerate
10 mg warfarin nomogram vs 5 mg warfarin nomogram
Recurrent venous thromboembolism sonography or lung scan or chest computed tomography · patients with venous thromboembolism.
Warfarin initiation nomograms for venous thromboembolism (2016) · Cochrane
RR 1.48 [0.39, 5.56]3 studies · 362 participantsLow
10 mg warfarin nomogram vs 5 mg warfarin nomogram
Major bleeding fall in hemoglobin of > 20 g/L or transfusion of 2 or more units of red cells · patients with venous thromboembolism.
Warfarin initiation nomograms for venous thromboembolism (2016) · Cochrane
RR 0.97 [0.27, 3.51]4 studies · 494 participantsModerate
10 mg warfarin nomogram vs 5 mg warfarin nomogram
Minor bleeding it is not major bleeding · patients with venous thromboembolism.
Warfarin initiation nomograms for venous thromboembolism (2016) · Cochrane
RR 0.52 [0.15, 1.83]2 studies · 243 participantsVery low
10 mg warfarin nomogram vs 5 mg warfarin nomogram
Length of hospital stay record of hospitalization · patients with venous thromboembolism.
Warfarin initiation nomograms for venous thromboembolism (2016) · Cochrane
no estimate extracted1 study · 111 participantsLow
Venous cutdown vs Seldinger technique
Success of primary implantation · patients requiring an elective TIVAP insertion for treatment of benign or malignant disease
Venous cutdown versus the Seldinger technique for placement of totally implantable venous access ports (2016) · Cochrane
OR 0.4 [0.25, 0.65]7 studies · 1006 participantsModerate
Venous cutdown vs Seldinger technique
Overall perioperative and postoperative complications · patients requiring an elective TIVAP insertion for treatment of benign or malignant disease
Venous cutdown versus the Seldinger technique for placement of totally implantable venous access ports (2016) · Cochrane
OR 1.16 [0.76, 1.75]7 studies · 1006 participantsModerate
Venous cutdown vs Seldinger technique
Pneumothorax · patients requiring an elective TIVAP insertion for treatment of benign or malignant disease
Venous cutdown versus the Seldinger technique for placement of totally implantable venous access ports (2016) · Cochrane
OR 1.97 [0.53, 7.34]7 studies · 1006 participantsModerate
Venous cutdown vs Seldinger technique
Infections · patients requiring an elective TIVAP insertion for treatment of benign or malignant disease
Venous cutdown versus the Seldinger technique for placement of totally implantable venous access ports (2016) · Cochrane
OR 0.63 [0.25, 1.56]6 studies · 906 participantsModerate
Venous cutdown vs Seldinger technique
Catheter/port‐related complications · patients requiring an elective TIVAP insertion for treatment of benign or malignant disease
Venous cutdown versus the Seldinger technique for placement of totally implantable venous access ports (2016) · Cochrane
OR 1 [0.61, 1.64]7 studies · 1006 participantsModerate
Subintimal angioplasty with stenting vs remote endarterectomy
Clinical improvement: Rutherford classification improvement Rutherford classification · 95 people with Rutherford 3 to 5 TASC‐II D lesions
Subintimal angioplasty for lower limb arterial chronic total occlusions (2016) · Cochrane
RR 0.79 [0.61, 1.03]1 study · 95 participantsLow
OUTBACK re‐entry catheter vs manual re‐entry
Technical success rate · 52 people with TASC‐II D superficial femoral artery chronic total occlusions
Subintimal angioplasty for lower limb arterial chronic total occlusions (2016) · Cochrane
RR 1 [0.93, 1.08]1 study · 52 participantsLow
OUTBACK re‐entry catheter vs manual re‐entry
months' patency rate · 52 people with TASC‐II D superficial femoral artery chronic total occlusions
Subintimal angioplasty for lower limb arterial chronic total occlusions (2016) · Cochrane
RR 1.04 [0.94, 1.15]1 study · 52 participantsLow
OUTBACK re‐entry catheter vs manual re‐entry
months' patency rate · 52 people with TASC‐II D superficial femoral artery chronic total occlusions
Subintimal angioplasty for lower limb arterial chronic total occlusions (2016) · Cochrane
RR 1.09 [0.9, 1.33]1 study · 52 participantsLow
OUTBACK re‐entry catheter vs manual re‐entry
months' primary patency rate · 52 people with TASC‐II D superficial femoral artery chronic total occlusions
Subintimal angioplasty for lower limb arterial chronic total occlusions (2016) · Cochrane
no estimate extracted1 study · 52 participantsUngraded