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
Mycophenolate mofetil vs cyclosporin
Adverse effects: hypertrichosis · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.23 [0.1, 0.5]3 studies · 140 participantsLow
Mycophenolate mofetil vs cyclosporin
Adverse effects: lymphopenia · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.64 [0.08, 4.85]2 studies · 84 participantsLow
Mycophenolate mofetil vs cyclosporin
Adverse effects: gum hypertrophy · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.09 [0.02, 0.47]3 studies · 144 participantsLow
Mycophenolate mofetil vs cyclosporin
Adverse effects: reduced GFR · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.33 [0.01, 7.45]1 study · 24 participantsLow
Levamisole vs steroids or placebo or both, or no treatment
Relapse during treatment (4 to 12 months) · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.52 [0.33, 0.82]8 studies · 474 participantsLow
Levamisole vs steroids or placebo or both, or no treatment
Relapse at 6 to 12 months · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.65 [0.48, 0.88]8 studies · 462 participantsLow
Levamisole vs steroids or placebo or both, or no treatment
Frequent relapses · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
no estimate extractedNRNo studies
Levamisole vs steroids or placebo or both, or no treatment
Mean relapse rate/patient/month · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
no estimate extracted2 studies · 2 participantsVery low
Levamisole vs steroids or placebo or both, or no treatment
Adverse effects: leucopenia · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 4.18 [0.72, 24.21]3 studies · 214 participantsLow
Levamisole vs steroids or placebo or both, or no treatment
Adverse effects: ANCA positive/arthritis · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 3 [0.13, 71.92]1 study · 100 participantsLow
Rituximab vs placebo or control
Relapses at 12 months · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.63 [0.42, 0.93]3 studies · 198 participantsModerate
Levamisole vs cyclophosphamide
Relapse: at end of therapy · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 2.14 [0.22, 20.95]2 studies · 97 participantsVery low
Levamisole vs cyclophosphamide
Relapse: at 6 to 9 months after therapy · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 1.17 [0.76, 1.81]2 studies · 97 participantsLow
Levamisole vs cyclophosphamide
Relapse: at 12 months after therapy · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.89 [0.68, 1.16]1 study · 40 participantsLow
Levamisole vs cyclophosphamide
Relapse: at 24 months after therapy · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.89 [0.73, 1.1]1 study · 40 participantsLow
Levamisole vs cyclophosphamide
Frequent relapses · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
no estimate extractedNRNo studies
Levamisole vs cyclophosphamide
Mean relapse rate/patient/month · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
no estimate extractedNRNo studies
Levamisole vs cyclophosphamide
Adverse effects: infection · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 1.08 [0.67, 1.75]1 study · 40 participantsLow
Levamisole vs cyclophosphamide
Adverse effects: leucopenia · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.25 [0.04, 1.48]2 studies · 97 participantsLow
Levamisole vs cyclophosphamide
Adverse effects: abnormal liver function tests · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.33 [0.01, 7.72]1 study · 40 participantsVery low
Cyclosporin plus prednisolone vs prednisolone alone
Relapse at 6 months · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.33 [0.13, 0.83]1 study · 104 participantsLow
Rituximab vs placebo or control
Frequent relapses · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
no estimate extractedNRNo studies
Cyclosporin plus prednisolone vs prednisolone alone
Relapse at 12 months · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.72 [0.46, 1.13]1 study · 104 participantsLow
Cyclosporin plus prednisolone vs prednisolone alone
Frequent relapses · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
no estimate extractedNRNo studies
Cyclosporin plus prednisolone vs prednisolone alone
Mean relapse rate/patient/month · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
no estimate extractedNRNo studies
Cyclosporin plus prednisolone vs prednisolone alone
Adverse effects: number needing cytotoxic agents · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.47 [0.18, 1.23]1 study · 104 participantsVery low
Cyclosporin plus prednisolone vs prednisolone alone
Adverse effects: creatinine at the end of study · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
no estimate extracted1 study · 87 participantsVery low
Alkylating agents vs cyclosporin
Relapse at end of therapy (6 to 9 months) · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.91 [0.55, 1.48]2 studies · 95 participantsLow
Alkylating agents vs cyclosporin
Relapse at 12 to 24 months · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.51 [0.35, 0.74]2 studies · 95 participantsLow
Alkylating agents vs cyclosporin
Frequent relapses · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
no estimate extractedNRNo studies
Alkylating agents vs cyclosporin
Mean relapse rate/patient/month · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
no estimate extractedNRNo studies
Alkylating agents vs cyclosporin
Adverse effects: serum creatinine · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.2 [0.02, 1.69]2 studies · 106 participantsLow
Rituximab vs placebo or control
Relapse rate/patient/month · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
no estimate extractedNRNo studies
Alkylating agents vs cyclosporin
Adverse effects: hypertrichosis · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.06 [0.01, 0.4]2 studies · 106 participantsLow
Alkylating agents vs cyclosporin
Adverse effects: gum hypertrophy · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.08 [0.01, 0.59]2 studies · 106 participantsLow
Alkylating agents vs cyclosporin
Adverse effects: hypertension · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.33 [0.01, 7.72]1 study · 40 participantsVery low
Alkylating agents vs cyclosporin
Adverse effects: leucopenia · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 29.84 [1.84, 483.93]1 study · 66 participantsVery low
Alkylating agents vs steroids, placebo or both
Relapse at 6 to 12 months · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.44 [0.32, 0.6]6 studies · 202 participantsModerate
Alkylating agents vs steroids, placebo or both
Relapse at 12 to 24 months · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.2 [0.09, 0.46]4 studies · 59 participantsLow
Alkylating agents vs steroids, placebo or both
Frequent relapses · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
no estimate extractedNRNo studies
Alkylating agents vs steroids, placebo or both
Mean relapse rate/patient/month · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
no estimate extractedNRNo studies
Alkylating agents vs steroids, placebo or both
CPA: leucopenia · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 10.63 [1.45, 78.05]NRUngraded
Alkylating agents vs steroids, placebo or both
Chlorambucil: leucopenia · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 2.5 [0.11, 54.87]NRUngraded
Rituximab vs placebo or control
Adverse effects: moderate to severe Infusion reactions · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 5.83 [1.34, 25.29]4 studies · 252 participantsLow
Intravenous vs oral cyclophosphamide
Relapse at 6 months · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.54 [0.34, 0.88]2 studies · 83 participantsLow
Intravenous vs oral cyclophosphamide
Continuing frequently‐relapsing or steroid‐dependent SSNS at 6 months · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.4 [0.18, 0.89]1 study · 47 participantsLow
Intravenous vs oral cyclophosphamide
Relapse at end of study · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.99 [0.76, 1.29]2 studies · 83 participantsLow
Intravenous vs oral cyclophosphamide
Mean relapse rate/patient/month · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
no estimate extractedNRNo studies
Intravenous vs oral cyclophosphamide
Adverse events: leucopenia · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.37 [0.09, 1.51]2 studies · 83 participantsLow
Intravenous vs oral cyclophosphamide
Adverse events: hair loss · SSNS in children
Non‐corticosteroid immunosuppressive medications for steroid‐sensitive nephrotic syndrome in children (2020) · Cochrane
RR 0.19 [0.04, 1.03]2 studies · 83 participantsLow