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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)

346 questions in 59 reviews · Vascular

current versions
No studies 346 · 100%Ungraded 0 · 0%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

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
Chronic DVT ‐ antiplatelet agents plus BMP vs BMP plus placebo
Post‐thrombotic syndrome · people requiring treatment for chronic DVT
Antiplatelet agents for the treatment of deep venous thrombosis (2022) · Cochrane
no estimate extractedNRNo studies
Berotralstat vs placebo or active control
Mortality (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
C1 esterase inhibitor vs placebo or active control
Mortality (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
C1 esterase inhibitor vs placebo or active control
Disability (any validated scale) (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Plasma‐derived C1 esterase inhibitor vs placebo or active control
Risk of HAE attacks (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Plasma‐derived C1 esterase inhibitor vs placebo or active control
Mortality (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Plasma‐derived C1 esterase inhibitor vs placebo or active control
Disability(any validated scale) (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Nanofiltered C1 esterase inhibitor vs placebo or active control
Risk of HAE attacks (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Avoralstat vs placebo
Mortality (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Nanofiltered C1 esterase inhibitor vs placebo or active control
Mortality (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Nanofiltered C1 esterase inhibitor vs placebo or active control
Serious adverse events (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Nanofiltered C1 esterase inhibitor vs placebo or active control
Adverse events (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Recombinant human C1 esterase inhibitor vs placebo or active control
Risk of HAE attacks (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Recombinant human C1 esterase inhibitor vs placebo or active control
Mortality (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Recombinant human C1 esterase inhibitor vs placebo or active control
Quality of lifestandardised mean difference(during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Recombinant human C1 esterase inhibitor vs placebo or active control
Disability(any validated scale)(during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Lanadelumab vs placebo or active control
Risk of HAE attacks (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Lanadelumab vs placebo or active control
Mortality (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Avoralstat vs placebo
Disability (any validated scale) (during · children or adults with Types I or II HAE
Interventions for the long‐term prevention of hereditary angioedema attacks (2022) · Cochrane
no estimate extractedNRNo studies
Ultrasound guidance vs landmark method
Number of cannulation attempts · adults undergoing peripheral venous cannulation classed as moderately difficulta
Ultrasound guidance versus landmark method for peripheral venous cannulation in adults (2022) · Cochrane
no estimate extractedNRNo studies
Ultrasound guidance vs landmark method
Patient satisfaction NRS from 0 to 10 or 4‐step Likert scaleThe higher the score the higher the level of satisfaction · adults undergoing peripheral venous cannulation classed as moderately difficulta
Ultrasound guidance versus landmark method for peripheral venous cannulation in adults (2022) · Cochrane
no estimate extractedNRNo studies
Ultrasound guidance vs landmark method
Overall success of cannulation · adults undergoing peripheral venous cannulation classed as easya
Ultrasound guidance versus landmark method for peripheral venous cannulation in adults (2022) · Cochrane
no estimate extractedNRNo studies
Ultrasound guidance vs landmark method
Number of cannulation attempts · adults undergoing peripheral venous cannulation classed as easya
Ultrasound guidance versus landmark method for peripheral venous cannulation in adults (2022) · Cochrane
no estimate extractedNRNo studies
Ultrasound guidance vs landmark method
Patient satisfaction NRS from 0 to 10 or 4‐step Likert scale The higher the score, the higher the level of satisfaction · adults undergoing peripheral venous cannulation classed as easya
Ultrasound guidance versus landmark method for peripheral venous cannulation in adults (2022) · Cochrane
no estimate extractedNRNo studies
Ultrasound guidance vs landmark method
Overall success of cannulation · adults undergoing peripheral venous cannulation classed as moderately difficulta
Ultrasound guidance versus landmark method for peripheral venous cannulation in adults (2022) · Cochrane
no estimate extractedNRNo studies
Heparin started before vs after the surgical procedure
PE · people undergoing bariatric surgery
Pharmacological interventions for preventing venous thromboembolism in people undergoing bariatric surgery (2022) · Cochrane
no estimate extractedNRNo studies
Heparin started before vs after the surgical procedure
Adverse events (thrombocytopenia) · people undergoing bariatric surgery
Pharmacological interventions for preventing venous thromboembolism in people undergoing bariatric surgery (2022) · Cochrane
no estimate extractedNRNo studies
Combined mechanical and pharmacological prophylaxis vs mechanical prophylaxis alone
PE · people undergoing bariatric surgery
Pharmacological interventions for preventing venous thromboembolism in people undergoing bariatric surgery (2022) · Cochrane
no estimate extractedNRNo studies
Combined mechanical and pharmacological prophylaxis vs mechanical prophylaxis alone
Adverse events · people undergoing bariatric surgery
Pharmacological interventions for preventing venous thromboembolism in people undergoing bariatric surgery (2022) · Cochrane
no estimate extractedNRNo studies
Valvuloplasty plus surgery of the superficial venous system vs surgery of the superficial venous system
Ulcer healing and recurrence · people with non‐severe primary valvular incompetence
Surgery for deep venous insufficiency (2021) · Cochrane
no estimate extractedNRNo studies
Foam sclerotherapy vs foam sclerotherapy
QoL · participants with varicose veinsa
Injection sclerotherapy for varicose veins (2021) · Cochrane
no estimate extractedNRNo studies
Foam sclerotherapy vs foam sclerotherapy
Persistence of symptoms · participants with varicose veinsa
Injection sclerotherapy for varicose veins (2021) · Cochrane
no estimate extractedNRNo studies
Foam sclerotherapy vs liquid sclerotherapy
Complications ‐ DVT · participants with varicose veinsa
Injection sclerotherapy for varicose veins (2021) · Cochrane
no estimate extractedNRNo studies
Foam sclerotherapy vs liquid sclerotherapy
QoL · participants with varicose veinsa
Injection sclerotherapy for varicose veins (2021) · Cochrane
no estimate extractedNRNo studies
Foam sclerotherapy vs liquid sclerotherapy
Persistence of symptoms · participants with varicose veinsa
Injection sclerotherapy for varicose veins (2021) · Cochrane
no estimate extractedNRNo studies
Sclerotherapy vs sclerotherapy with different substances
Cosmetic appearance · participants with varicose veinsb
Injection sclerotherapy for varicose veins (2021) · Cochrane
no estimate extractedNRNo studies
Sclerotherapy vs sclerotherapy with different substances
Complications ‐ DVT · participants with varicose veinsb
Injection sclerotherapy for varicose veins (2021) · Cochrane
no estimate extractedNRNo studies
Sclerotherapy vs sclerotherapy with different substances
Residual varicose veins · participants with varicose veinsb
Injection sclerotherapy for varicose veins (2021) · Cochrane
no estimate extractedNRNo studies
Sclerotherapy vs sclerotherapy with different substances
QoL · participants with varicose veinsb
Injection sclerotherapy for varicose veins (2021) · Cochrane
no estimate extractedNRNo studies
Sclerotherapy vs sclerotherapy with different substances
Persistence of symptoms · participants with varicose veinsb
Injection sclerotherapy for varicose veins (2021) · Cochrane
no estimate extractedNRNo studies
Sclerotherapy vs sclerotherapy with different substances
Recurrent varicose veins · participants with varicose veinsb
Injection sclerotherapy for varicose veins (2021) · Cochrane
no estimate extractedNRNo studies
Foam sclerotherapy vs placebo
Recurrent varicose veins · participants with varicose veinsa
Injection sclerotherapy for varicose veins (2021) · Cochrane
no estimate extractedNRNo studies
Dipyridamole vs placebo
Duration of hospital stay · people with ESRD receiving haemodialysis through an arteriovenous graft
Medical adjuvant treatment to increase patency of arteriovenous fistulae and grafts (2021) · Cochrane
no estimate extractedNRNo studies
Dipyridamole vs placebo
Number of related surgical or radiological interventions · people with ESRD receiving haemodialysis through an arteriovenous graft
Medical adjuvant treatment to increase patency of arteriovenous fistulae and grafts (2021) · Cochrane
no estimate extractedNRNo studies
Dipyridamole plus aspirin vs placebo
Duration of hospital stay · people with ESRD receiving haemodialysis through an arteriovenous graft
Medical adjuvant treatment to increase patency of arteriovenous fistulae and grafts (2021) · Cochrane
no estimate extractedNRNo studies
Dipyridamole plus aspirin vs placebo
Number of related surgical or radiological interventions · people with ESRD receiving haemodialysis through an arteriovenous graft
Medical adjuvant treatment to increase patency of arteriovenous fistulae and grafts (2021) · Cochrane
no estimate extractedNRNo studies
Warfarin vs placebo
Duration of hospital stay · people with ESRD receiving haemodialysis through an arteriovenous graft
Medical adjuvant treatment to increase patency of arteriovenous fistulae and grafts (2021) · Cochrane
no estimate extractedNRNo studies
Aspirin vs placebo
Duration of hospital stay · people with ESRD receiving haemodialysis through an arteriovenous fistula or graft
Medical adjuvant treatment to increase patency of arteriovenous fistulae and grafts (2021) · Cochrane
no estimate extractedNRNo studies
Warfarin vs placebo
Number of related surgical or radiological interventions · people with ESRD receiving haemodialysis through an arteriovenous graft
Medical adjuvant treatment to increase patency of arteriovenous fistulae and grafts (2021) · Cochrane
no estimate extractedNRNo studies
Fish oil vs placebo
Duration of hospital stay · people with ESRD receiving haemodialysis through an arteriovenous graft
Medical adjuvant treatment to increase patency of arteriovenous fistulae and grafts (2021) · Cochrane
no estimate extractedNRNo studies