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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.

Population

Intervention or exposure

Comparison

Outcome

Any field or review title

Field or topic

Source

Review versions

2,434 questions in 139 reviews · Kidney and Transplant

current versions

No studies 504 · 20.7%Ungraded 40 · 1.6%Very low 611 · 25.1%Low 790 · 32.5%Moderate 414 · 17%High 75 · 3.1%

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.

Question	Effect	Evidence	Status / GRADE
Mechanical thrombectomy vs continuous infusion Failure · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Mechanical thrombectomy vs continuous infusion Technical success · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 1 [0.87, 1.15]	1 study · 40 participants	Very low
Mechanical thrombectomy vs continuous infusion Access dysfunction · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Mechanical thrombectomy vs continuous infusion Successful dialysis · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Surgical thrombectomy vs pulse spray technique Technical success · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Mechanical thrombectomy vs continuous infusion Major adverse events · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Mechanical thrombectomy vs continuous infusion Minor adverse events · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 0.32 [0.09, 1.16]	2 studies · 118 participants	Very low
Mechanical thrombectomy vs continuous infusion Death · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Surgical thrombectomy vs continuous infusion Patency at 30 days · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Surgical thrombectomy vs continuous infusion Failure · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Surgical thrombectomy vs continuous infusion Technical Success · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 1.41 [0.96, 2.06]	1 study · 31 participants	Very low
Surgical thrombectomy vs continuous infusion Access dysfunction · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Surgical thrombectomy vs continuous infusion Successful dialysis · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Surgical thrombectomy vs continuous infusion Major adverse events · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 0.13 [0.01, 2.4]	1 study · 31 participants	Very low
Surgical thrombectomy vs continuous infusion Minor adverse events · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 0.19 [0.02, 1.43]	1 study · 31 participants	Very low
Surgical thrombectomy vs pulse spray technique Access dysfunction · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Surgical thrombectomy vs continuous infusion Death · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Continuous Infusion vs pulse spray technique Patency at 30 days · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 0.92 [0.67, 1.27]	1 study · 30 participants	Very low
Continuous Infusion vs pulse spray technique Failure · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Continuous Infusion vs pulse spray technique Technical success · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 1.07 [0.89, 1.28]	1 study · 30 participants	Very low
Continuous Infusion vs pulse spray technique Access dysfunction · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Continuous Infusion vs pulse spray technique Successful dialysis · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Continuous Infusion vs pulse spray technique Major adverse events · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Continuous Infusion vs pulse spray technique Minor adverse events · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 1 [0.07, 14.55]	1 study · 30 participants	Very low
Continuous Infusion vs pulse spray technique Death · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Pharmacomechanical thrombolysis (Cragg® catheter) vs pulse spray technique Patency at 30 days · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Surgical thrombectomy vs pulse spray technique Successful dialysis · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Pharmacomechanical thrombolysis (Cragg® catheter) vs pulse spray technique Failure · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Pharmacomechanical thrombolysis (Cragg® catheter) vs pulse spray technique Technical success · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 0.96 [0.87, 1.06]	1 study · 77 participants	Very low
Pharmacomechanical thrombolysis (Cragg® catheter) vs pulse spray technique Access dysfunction · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Pharmacomechanical thrombolysis (Cragg® catheter) vs pulse spray technique Successful dialysis · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Pharmacomechanical thrombolysis (Cragg® catheter) vs pulse spray technique Minor adverse events · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 1.98 [0.41, 9.57]	1 study · 77 participants	Very low
Pharmacomechanical thrombolysis (Cragg® catheter) vs pulse spray technique Major adverse events · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 1.58 [0.15, 16.71]	1 study · 77 participants	Very low
Pharmacomechanical thrombolysis (Cragg® catheter) vs pulse spray technique Death · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Surgical thrombectomy vs different types of endovascular interventions Patency at 30 days · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 1.1 [0.73, 1.65]	1 study · 115 participants	Very low
Surgical thrombectomy vs different types of endovascular interventions Failure · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 0.66 [0.23, 1.89]	1 study · 115 participants	Very low
Surgical thrombectomy vs different types of endovascular interventions Technical success · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 1.15 [0.94, 1.41]	1 study · 115 participants	Very low
Surgical thrombectomy vs pulse spray technique Major adverse events · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 0.33 [0.02, 7.32]	1 study · 20 participants	Very low
Surgical thrombectomy vs different types of endovascular interventions Access dysfunction · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Surgical thrombectomy vs different types of endovascular interventions Successful dialysis · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Surgical thrombectomy vs different types of endovascular interventions Major adverse events · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 0.35 [0.01, 8.44]	1 study · 115 participants	Very low
Surgical thrombectomy vs different types of endovascular interventions Minor adverse events · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 5.26 [0.26, 107.27]	1 study · 115 participants	Very low
Surgical thrombectomy vs different types of endovascular interventions Death · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Surgical thrombectomy vs pulse spray technique Minor adverse events · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Surgical thrombectomy vs pulse spray technique Death · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	no estimate extracted	NR	No studies
Surgical thrombectomy vs mechanical thrombectomy Patency at 30 days · thrombosed haemodialysis arteriovenous fistulas and grafts Interventions for thrombosed haemodialysis arteriovenous fistulas and grafts (2024) · Cochrane	RR 1.34 [1.07, 1.67]	3 studies · 404 participants	Very low
Metformin vs placebo eGFR: change ( · preventing the progression of CKD Metformin for preventing the progression of chronic kidney disease (2024) · Cochrane	no estimate extracted	3 studies · 505 participants	Low
Metformin vs active control Serious adverse events ( · preventing the progression of CKD Metformin for preventing the progression of chronic kidney disease (2024) · Cochrane	RR 1.16 [0.79, 1.71]	2 studies · 5545 participants	Moderate
Metformin vs active control Withdrew due to intolerance ( · preventing the progression of CKD Metformin for preventing the progression of chronic kidney disease (2024) · Cochrane	RR 0.92 [0.79, 1.08]	3 studies · 5593 participants	Moderate
Metformin vs active control Dosing and tolerance ( · preventing the progression of CKD Metformin for preventing the progression of chronic kidney disease (2024) · Cochrane	no estimate extracted	3 studies · 3 participants	Moderate