Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

197 questions · 203 findings · 17 reviews

No studies found 25 · 12.3%GRADE not reported 7 · 3.4%Very low 79 · 38.9%Low 49 · 24.1%Moderate 38 · 18.7%High 5 · 2.5%

Methotrexate vs 6‐MP or azathioprine

Withdrawals due to adverse events · adult patients with refractory Crohn's disease

It is very uncertain whether methotrexate changes withdrawal due to adverse event (Oren 1997) compared with 6‐MP or azathioprine (very low certainty).

3 findings from 1 review

Methotrexate vs 6‐MP or azathioprine

Failure to enter remission or possible remission at 16 weeks (Arora 1999) · adult patients with refractory Crohn's disease

Methotrexate showed no clear difference in failure to enter remission or possible remission at 24‐36 weeks… compared with 6‐MP or azathioprine (low certainty).

3 findings from 1 review