Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

1,514 questions · 1,543 findings · 649 reviews

No studies found 224 · 14.5%GRADE not reported 105 · 6.8%Very low 383 · 24.8%Low 447 · 29%Moderate 293 · 19%High 91 · 5.9%

Oral alkylating agents ± steroids vs steroids or placebo or both, or no treatment

Adverse events ‐ infection at 3 years · primary membranous nephropathy in adults with nephrotic syndrome

It is very uncertain whether oral alkylating agents ± steroids changes adverse events ‐ infection at 3 years compared with placebo/no treatment/steroids (very low certainty).

1 finding from 1 review

Vitamin A vs placebo

Adverse events: yellowing of the skin · healthy people and healthy male physicians

Vitamin A leads to higher adverse events: yellowing of the skin compared with placebo (high certainty).

1 finding from 1 review

Bevacizumab + IFN vs IFN (+ placebo) (targeted agent + classic immunotherapy versus classic immunotherapy)

Serious adverse events (Grade 3 or 4) · Treatment‐naïve metastatic renal cell carcinoma (clear cell type)

Bevacizumab + IFN probably leads to higher serious adverse events (Grade 3 or 4) compared with IFN (+ placebo) (targeted agent + classic immunotherapy versus… (moderate certainty).

1 finding from 1 review