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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)

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
Calcium‐enriched bread vs calcium acetate
Cardiovascular events · people with CKD‐MBD
Dietary interventions for mineral and bone disorder in people with chronic kidney disease (2015) · Cochrane
no estimate extractedNRNo studies
Calcium‐enriched bread vs calcium acetate
Fracture · people with CKD‐MBD
Dietary interventions for mineral and bone disorder in people with chronic kidney disease (2015) · Cochrane
no estimate extractedNRNo studies
Very low vs low protein diet
Serum phosphorus · people with CKD‐MBD
Dietary interventions for mineral and bone disorder in people with chronic kidney disease (2015) · Cochrane
no estimate extracted2 studies · 41 participantsVery low
Very low vs low protein diet
PTH · people with CKD‐MBD
Dietary interventions for mineral and bone disorder in people with chronic kidney disease (2015) · Cochrane
no estimate extracted2 studies · 41 participantsVery low
CHM vs antibiotics
Effectiveness · women with recurrent UTI
Chinese herbal medicine for treating recurrent urinary tract infections in women (2015) · Cochrane
RR 1.24 [1.13, 1.37]3 studies · 282 participantsVery low
CHM vs antibiotics
Recurrence · women with recurrent UTI
Chinese herbal medicine for treating recurrent urinary tract infections in women (2015) · Cochrane
RR 0.28 [0.09, 0.82]3 studies · 282 participantsVery low
CHM plus antibiotics vs antibiotics
Effectiveness · women with recurrent UTI
Chinese herbal medicine for treating recurrent urinary tract infections in women (2015) · Cochrane
RR 1.24 [1.04, 1.47]2 studies · 120 participantsVery low
CHM plus antibiotics vs antibiotics
Recurrence · women with recurrent UTI
Chinese herbal medicine for treating recurrent urinary tract infections in women (2015) · Cochrane
RR 0.5 [0.32, 0.77]2 studies · 120 participantsVery low
CHM vs CHM
Effectiveness · women with recurrent UTI
Chinese herbal medicine for treating recurrent urinary tract infections in women (2015) · Cochrane
RR 1.28 [1.03, 1.57]1 study · 80 participantsVery low
CHM vs CHM
Recurrence · women with recurrent UTI
Chinese herbal medicine for treating recurrent urinary tract infections in women (2015) · Cochrane
RR 0.4 [0.21, 0.77]2 studies · 140 participantsVery low
CHM vs CHM
Quality of life · women with recurrent UTI
Chinese herbal medicine for treating recurrent urinary tract infections in women (2015) · Cochrane
no estimate extracted1 study · 80 participantsVery low
Intervention NR
Acute kidney injury · adults undergoing surgery requiring cardiac bypass
HMG CoA reductase inhibitors (statins) for preventing acute kidney injury after surgical procedures… (2015) · Cochrane
RR 0.76 [0.46, 1.28]5 studies · 467 participantsLow
Intervention NR
Serum creatinine · adults undergoing surgery requiring cardiac bypass
HMG CoA reductase inhibitors (statins) for preventing acute kidney injury after surgical procedures… (2015) · Cochrane
no estimate extracted2 studies · 195 participantsLow
Intervention NR
Renal replacement therapy · adults undergoing surgery requiring cardiac bypass
HMG CoA reductase inhibitors (statins) for preventing acute kidney injury after surgical procedures… (2015) · Cochrane
RR 0.8 [0.23, 2.81]2 studies · 251 participantsVery low
Intervention NR
Mortality · adults undergoing surgery requiring cardiac bypass
HMG CoA reductase inhibitors (statins) for preventing acute kidney injury after surgical procedures… (2015) · Cochrane
RR 3.86 [0.43, 34.4]5 studies · 381 participantsVery low
Intervention NR
Adverse events · adults undergoing surgery requiring cardiac bypass
HMG CoA reductase inhibitors (statins) for preventing acute kidney injury after surgical procedures… (2015) · Cochrane
RR 1.13 [1.47, 2.68]1 study · 140 participantsVery low
Intervention NR
ICU ‐ intensive care unit · adults undergoing surgery requiring cardiac bypass
HMG CoA reductase inhibitors (statins) for preventing acute kidney injury after surgical procedures… (2015) · Cochrane
no estimate extractedNRNo studies
Amphotericin B deoxycholate vs liposomal amphotericin B: effects on kidney function
Increase in SCr level: ≥ two‐fold from baseline level SCr level (mg/dL) · patients in treatment with amphotericin B
Amphotericin B deoxycholate versus liposomal amphotericin B: effects on kidney function (2015) · Cochrane
RR 0.49 [0.4, 0.59]10 studies · 2172 participantsModerate
Oral vs IV followed by oral (11 days) therapy
Time to fever resolution (hours) · children with acute pyelonephritis
Antibiotics for acute pyelonephritis in children (2014) · Cochrane
no estimate extracted2 studies · 808 participantsModerate
Different dosing regimens of aminoglycosides (daily vs 8 hourly)
Increase in serum creatinine during treatment · children with acute pyelonephritis
Antibiotics for acute pyelonephritis in children (2014) · Cochrane
RR 0.75 [0.2, 2.82]3 studies · 419 participantsLow
Agent: Third generation cephalosporin vs other antibiotic
Persistent bacteriuria · children with acute pyelonephritis
Antibiotics for acute pyelonephritis in children (2014) · Cochrane
RR 2.41 [0.98, 5.93]3 studies · 439 participantsLow
Agent: Third generation cephalosporin vs other antibiotic
Recurrent UTI after end of therapy · children with acute pyelonephritis
Antibiotics for acute pyelonephritis in children (2014) · Cochrane
RR 1.23 [0.32, 4.74]4 studies · 491 participantsLow
Agent: Third generation cephalosporin vs other antibiotic
Persistent symptoms after end of treatment · children with acute pyelonephritis
Antibiotics for acute pyelonephritis in children (2014) · Cochrane
RR 0.28 [0.13, 0.62]3 studies · 471 participantsLow
Oral vs IV followed by oral (11 days) therapy
Renal parenchymal damage at 6 to 12 months: all included children with acute pyelonephritis DMSA scans · children with acute pyelonephritis
Antibiotics for acute pyelonephritis in children (2014) · Cochrane
RR 0.82 [0.59, 1.12]4 studies · 943 participantsModerate
Oral vs IV followed by oral (11 days) therapy
Renal parenchymal damage at 6 to 12 months: children with renal parenchymal damage on initial DMSA · children with acute pyelonephritis
Antibiotics for acute pyelonephritis in children (2014) · Cochrane
RR 0.79 [0.61, 1.03]4 studies · 681 participantsModerate
Short duration (3 to 4 days) vs long duration (7 to 14 days) IV therapy
Persistent bacteriuria after treatment · children with acute pyelonephritis
Antibiotics for acute pyelonephritis in children (2014) · Cochrane
RR 0.78 [0.24, 2.55]4 studies · 305 participantsLow
Short duration (3 to 4 days) vs long duration (7 to 14 days) IV therapy
Recurrent UTI within 6 months · children with acute pyelonephritis
Antibiotics for acute pyelonephritis in children (2014) · Cochrane
RR 0.97 [0.58, 1.62]5 studies · 993 participantsModerate
Short duration (3 to 4 days) vs long duration (7 to 14 days) IV therapy
Persistent renal damage at 3 to 6 months: all included children with acute pyelonephritis · children with acute pyelonephritis
Antibiotics for acute pyelonephritis in children (2014) · Cochrane
RR 1.01 [0.8, 1.29]4 studies · 726 participantsModerate
Short duration (3 to 4 days) vs long duration (7 to 14 days) IV therapy
Persistent renal damage at 3 to 6 months: children with initial renal parenchymal damage on initial DMSA scan · children with acute pyelonephritis
Antibiotics for acute pyelonephritis in children (2014) · Cochrane
RR 1.1 [0.84, 1.45]3 studies · 315 participantsModerate
Different dosing regimens of aminoglycosides (daily vs 8 hourly)
Persistent bacteriuria after 1 to 3 days of treatment · children with acute pyelonephritis
Antibiotics for acute pyelonephritis in children (2014) · Cochrane
RR 1.05 [0.15, 7.27]3 studies · 435 participantsLow
Different dosing regimens of aminoglycosides (daily vs 8 hourly)
Hearing impairment following treatment · children with acute pyelonephritis
Antibiotics for acute pyelonephritis in children (2014) · Cochrane
RR 2.83 [0.33, 24.56]3 studies · 271 participantsLow
CERA vs other ESA
Final Hb g/dL: CERA every 2 weeks versus rHuEPO · patients with the anaemia of end‐stage kidney disease undergoing dialysis
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
no estimate extracted4 studies · 1126 participantsHigh
Intervention NR
Transfusion · patients with the anaemia of end‐stage kidney disease undergoing dialysis
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
RR 1.11 [0.52, 2.37]2 studies · 822 participantsModerate
Intervention NR
Numbers of adverse effects due to hypertension · patients with the anaemia of end‐stage kidney disease undergoing dialysis
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
RR 1.18 [0.83, 1.67]2 studies · 822 participantsHigh
Intervention NR
Numbers of adverse events due to access thrombosis · patients with the anaemia of end‐stage kidney disease undergoing dialysis
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
RR 0.96 [0.64, 1.43]2 studies · 822 participantsHigh
Darbepoetin vs rHuEPO
Final/change in Hb (g/dL) · patients with the anaemia of end‐stage kidney disease in dialysis patients
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
no estimate extracted6 studies · 1245 participantsModerate
Darbepoetin vs rHuEPO
Final/change in ESA dose · patients with the anaemia of end‐stage kidney disease in dialysis patients
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
no estimate extracted3 studies · 757 participantsLow
Darbepoetin vs rHuEPO
All‐cause mortality · patients with the anaemia of end‐stage kidney disease in dialysis patients
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
RR 1.29 [0.82, 2.02]5 studies · 1596 participantsModerate
Darbepoetin vs rHuEPO
Total treatment‐related adverse events · patients with the anaemia of end‐stage kidney disease in dialysis patients
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
no estimate extracted3 studies · 570 participantsUngraded
Darbepoetin vs rHuEPO
Hypertension · patients with the anaemia of end‐stage kidney disease in dialysis patients
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
no estimate extracted4 studies · 1475 participantsLow
Darbepoetin vs rHuEPO
Access thrombosis/vascular complication · patients with the anaemia of end‐stage kidney disease in dialysis patients
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
no estimate extracted4 studies · 1475 participantsModerate
Darbepoetin vs rHuEPO
Transfusion · patients with the anaemia of end‐stage kidney disease in dialysis patients
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
no estimate extracted3 studies · 1069 participantsModerate
CERA vs other ESA
Final Hb g/dL: CERA every 4 week versus rHuEPO · patients with the anaemia of end‐stage kidney disease undergoing dialysis
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
no estimate extracted2 studies · 672 participantsHigh
rHuEPO once/week vs rHuEPO 2 to 3 times/week
Final/change in Hb · patients with the anaemia of end‐stage kidney disease undergoing dialysis
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
no estimate extracted7 studies · 363 participantsLow
rHuEPO once/week vs rHuEPO 2 to 3 times/week
Final/change in EPO dose · patients with the anaemia of end‐stage kidney disease undergoing dialysis
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
no estimate extracted5 studies · 217 participantsLow
rHuEPO once/week vs rHuEPO 2 to 3 times/week
Adverse effects: transfusions · patients with the anaemia of end‐stage kidney disease undergoing dialysis
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
no estimate extracted1 study · 173 participantsUngraded
rHuEPO once/week vs rHuEPO 2 to 3 times/week
Adverse effects: hypertension · patients with the anaemia of end‐stage kidney disease undergoing dialysis
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
no estimate extracted4 studies · 175 participantsLow
rHuEPO once/week vs rHuEPO 2 to 3 times/week
Adverse effects: access problems · patients with the anaemia of end‐stage kidney disease undergoing dialysis
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
no estimate extracted1 study · 173 participantsUngraded
CERA vs other ESA
Final Hb g/dL: CERA every 2 week versus darbepoetin · patients with the anaemia of end‐stage kidney disease undergoing dialysis
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
no estimate extracted1 study · 249 participantsModerate
CERA vs other ESA
All‐cause mortality: CERA every 2 weeks versus rHuEPO · patients with the anaemia of end‐stage kidney disease undergoing dialysis
Frequency of administration of erythropoiesis‐stimulating agents for the anaemia of end‐stage kidney disease… (2014) · Cochrane
RR 1.03 [0.67, 1.57]4 studies · 1341 participantsModerate