Gap finder

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)

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.

QuestionEffectEvidenceStatus / GRADE
Angiotensin receptor blockers vs angiotensin‐converting‐enzyme inhibitors
Cardiovascular death Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 1.15 [0.45, 2.98]13 studies · 1606 participantsLow
Angiotensin receptor blockers vs angiotensin‐converting‐enzyme inhibitors
Doubling of SCr Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 0.88 [0.52, 1.48]2 studies · 767 participantsLow
Angiotensin receptor blockers vs angiotensin‐converting‐enzyme inhibitors
Fatal or nonfatal stroke Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 0.92 [0.38, 2.24]5 studies · 1146 participantsLow
Angiotensin receptor blockers vs angiotensin‐converting‐enzyme inhibitors
Fatal or nonfatal myocardial infarction Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 1.25 [0.62, 2.5]6 studies · 1209 participantsLow
Angiotensin‐converting‐enzyme inhibitors vs placebo or no treatment
Cardiovascular death Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 0.67 [0.13, 3.57]17 studies · 5625 participantsVery low
Angiotensin receptor blockers vs angiotensin‐converting‐enzyme inhibitors
Micro‐ to macroalbuminuria Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 0.97 [0.67, 1.42]965 participantsLow
Angiotensin receptor blockers vs angiotensin‐converting‐enzyme inhibitors
Micro‐ to normoalbuminuria Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 0.96 [0.62, 1.48]4 studies · 216 participantsLow
Dual therapy (angiotensin‐converting‐enzyme inhibitors plus angiotensin receptor blockers) vs placebo or no treatment
All‐cause death1 · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extracted1 study · 90 participantsLow
Dual therapy (angiotensin‐converting‐enzyme inhibitors plus angiotensin receptor blockers) vs placebo or no treatment
Cardiovascular death4 · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extracted1 study · 90 participantsLow
Dual therapy (angiotensin‐converting‐enzyme inhibitors plus angiotensin receptor blockers) vs placebo or no treatment
Doubling of SCr · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extractedNRNo studies
Dual therapy (angiotensin‐converting‐enzyme inhibitors plus angiotensin receptor blockers) vs placebo or no treatment
Fatal or nonfatal stroke · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extractedNRNo studies
Dual therapy (angiotensin‐converting‐enzyme inhibitors plus angiotensin receptor blockers) vs placebo or no treatment
Fatal or nonfatal myocardial infarction · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extractedNRNo studies
Dual therapy (angiotensin‐converting‐enzyme inhibitors plus angiotensin receptor blockers) vs placebo or no treatment
Micro‐ to macroalbuminuria5 · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
0.1 [0.05, 0.24]1 study · 82 participantsLow
Dual therapy (angiotensin‐converting‐enzyme inhibitors plus angiotensin receptor blockers) vs placebo or no treatment
Micro‐ to normoalbuminuria6 · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 5.27 [0.34, 81.57]1 study · 82 participantsVery low
Angiotensin‐converting‐enzyme inhibitors (ACEi) alone vs ACEi plus angiotensin receptor blockers
All‐cause death Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 1.08 [0.49, 2.4]6 studies · 1166 participantsLow
Angiotensin‐converting‐enzyme inhibitors vs placebo or no treatment
Doubling of SCr Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 0.69 [0.47, 1.01]8 studies · 6702 participantsVery low
Angiotensin‐converting‐enzyme inhibitors (ACEi) alone vs ACEi plus angiotensin receptor blockers
Cardiovascular death Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 3.02 [0.61, 14.85]4 studies · 994 participantsLow
Angiotensin‐converting‐enzyme inhibitors (ACEi) alone vs ACEi plus angiotensin receptor blockers
Doubling of SCr Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 1.14 [0.7, 1.85]2 studies · 813 participantsLow
Angiotensin‐converting‐enzyme inhibitors (ACEi) alone vs ACEi plus angiotensin receptor blockers
Fatal or nonfatal stroke Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 0.72 [0.23, 2.24]2 studies · 775 participantsLow
Angiotensin‐converting‐enzyme inhibitors (ACEi) alone vs ACEi plus angiotensin receptor blockers
Fatal or nonfatal myocardial infarction Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 0.44 [0.17, 1.12]3 studies · 880 participantsLow
Angiotensin‐converting‐enzyme inhibitors (ACEi) alone vs ACEi plus angiotensin receptor blockers
Micro‐ to macroalbuminuria Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 1.25 [0.67, 2.32]3 studies · 958 participantsVery low
Angiotensin‐converting‐enzyme inhibitors (ACEi) alone vs ACEi plus angiotensin receptor blockers
Micro‐ to normoalbuminuria Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 1.08 [0.74, 1.57]3 studies · 145 participantsLow
Angiotensin receptor blockers (ARB) alone vs angiotensin‐converting‐enzyme inhibitors plus ARB
All‐cause death Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 1.02 [0.76, 1.37]7 studies · 2607 participantsLow
Angiotensin receptor blockers (ARB) alone vs angiotensin‐converting‐enzyme inhibitors plus ARB
Cardiovascular death Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 3.03 [0.62, 14.93]4 studies · 992 participantsLow
Angiotensin receptor blockers (ARB) alone vs angiotensin‐converting‐enzyme inhibitors plus ARB
Doubling of SCr Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 1.18 [0.85, 1.64]3 studies · 2252 participantsLow
Angiotensin receptor blockers (ARB) alone vs angiotensin‐converting‐enzyme inhibitors plus ARB
Fatal or nonfatal stroke Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 0.76 [0.35, 1.65]3 studies · 2223 participantsLow
Angiotensin‐converting‐enzyme inhibitors vs placebo or no treatment
Fatal or nonfatal stroke Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 1.02 [0.8, 1.31]2 studies · 4944 participantsLow
Angiotensin receptor blockers (ARB) alone vs angiotensin‐converting‐enzyme inhibitors plus ARB
Fatal or nonfatal myocardial infarction Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 0.7 [0.49, 1.01]4 studies · 2321 participantsLow
Angiotensin receptor blockers (ARB) alone vs angiotensin‐converting‐enzyme inhibitors plus ARB
Micro‐ to macroalbuminuria Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 1.07 [0.77, 1.49]4 studies · 2410 participantsLow
Angiotensin receptor blockers (ARB) alone vs angiotensin‐converting‐enzyme inhibitors plus ARB
Micro‐ to normoalbuminuria Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 1.04 [0.74, 1.45]3 studies · 151 participantsLow
Angiotensin‐converting‐enzyme inhibitors (ACEi) vs another ACEi
All‐cause death1 Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extracted3 studies · 269 participantsLow
Angiotensin‐converting‐enzyme inhibitors (ACEi) vs another ACEi
Cardiovascular death4 Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extracted3 studies · 269 participantsLow
Angiotensin‐converting‐enzyme inhibitors (ACEi) vs another ACEi
Doubling of SCr · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extractedNRNo studies
Angiotensin‐converting‐enzyme inhibitors (ACEi) vs another ACEi
Fatal or nonfatal stroke · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extractedNRNo studies
Angiotensin‐converting‐enzyme inhibitors (ACEi) vs another ACEi
Fatal or nonfatal myocardial infarction · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extractedNRNo studies
Angiotensin‐converting‐enzyme inhibitors (ACEi) vs another ACEi
Micro‐ to macroalbuminuria · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extractedNRNo studies
Angiotensin‐converting‐enzyme inhibitors (ACEi) vs another ACEi
Micro‐ to normoalbuminuria · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extractedNRNo studies
Angiotensin‐converting‐enzyme inhibitors vs placebo or no treatment
Fatal or nonfatal myocardial infarction Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 0.79 [0.57, 1.09]3 studies · 5100 participantsLow
Angiotensin receptor blocker (ARB) vs another ARB
All‐cause death Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 0.58 [0.05, 7.08]5 studies · 2041 participantsVery low
Angiotensin receptor blocker (ARB) vs another ARB
Cardiovascular death Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 1.34 [0.47, 3.82]4 studies · 1360 participantsLow
Angiotensin receptor blocker (ARB) vs another ARB
Doubling of SCr4 · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 1 [0.2, 4.94]1 study · 857 participantsLow
Angiotensin receptor blocker (ARB) vs another ARB
Fatal or nonfatal stroke6 · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 2.21 [0.77, 6.29]1 study · 857 participantsLow
Angiotensin receptor blocker (ARB) vs another ARB
Fatal or nonfatal myocardial infarction7 · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 0.36 [0.12, 1.14]1 study · 857 participantsLow
Angiotensin receptor blocker (ARB) vs another ARB
Micro‐ to macroalbuminuria 8 · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 1.34 [0.87, 2.07]1 study · 716 participantsLow
Angiotensin receptor blocker (ARB) vs another ARB
Micro‐ to normoalbuminuria9 · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 0.98 [0.25, 3.88]1 study · 716 participantsLow
Low‐dose angiotensin receptor blockers (ARB) vs high‐dose ARB
All‐cause death1 · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extracted2 studies · 156 participantsLow
Low‐dose angiotensin receptor blockers (ARB) vs high‐dose ARB
Cardiovascular death4 · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extracted2 studies · 156 participantsLow
Low‐dose angiotensin receptor blockers (ARB) vs high‐dose ARB
Doubling of SCr · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extractedNRNo studies
Angiotensin‐converting‐enzyme inhibitors vs placebo or no treatment
Micro‐ to macroalbuminuria Median · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
RR 0.43 [0.28, 0.64]19 studies · 2282 participantsVery low
Low‐dose angiotensin receptor blockers (ARB) vs high‐dose ARB
Fatal or nonfatal stroke · people with diabetes and kidney disease
Angiotensin‐converting‐enzyme inhibitors and angiotensin receptor blockers for preventing the progression of… (2024) · Cochrane
no estimate extractedNRNo studies