Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

207 questions · 223 findings · 29 reviews · Headline outcomes only

No studies found 43 · 19.3%GRADE not reported 14 · 6.3%Very low 39 · 17.5%Low 67 · 30%Moderate 54 · 24.2%High 6 · 2.7%

Methotrexate vs placebo

Maintenance of clinical remission · Participants with Crohn's disease in remission

Methotrexate probably leads to higher proportion of patients maintaining clinical remission compared with placebo (moderate certainty).

3 findings from 1 review

Methotrexate vs placebo

Treatment responsea · children and young people with JIA

Methotrexate may leads to higher treatment responsea(up to 6 months) compared with placebo (low certainty).

1 finding from 1 review

Methotrexate vs placebo

Global well‐being: rated by participants · children and young people with JIA

Methotrexate showed no clear difference in participant global assessment of well‐being(up to 6 months) compared with placebo (low certainty).

1 finding from 1 review

Methotrexate vs placebo

Serious adverse events(up to 6 months) · children and young people with JIA

Methotrexate showed no clear difference in serious adverse events(up to 6 months) compared with placebo (low certainty).

1 finding from 1 review

Methotrexate vs placebo

Withdrawals due to adverse events · children and young people with JIA

Methotrexate showed no clear difference in withdrawals due to adverse events (up to 6 months) compared with placebo (low certainty).

1 finding from 1 review

Methotrexate vs placebo

Disease response · psoriatic arthritis

Methotrexate may leads to higher disease response compared with placebo (low certainty).

1 finding from 1 review