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%

Any systemic treatment vs placebo

Methotrexate · people with chronic plaque psoriasis

Any systemic treatment may leads to higher methotrexate compared with placebo (low certainty).

2 findings from 1 review

Intervention not reported

Methotrexate (1 RCT; 50 participants) · patients with moderate to severe eczema

It is very uncertain whether the intervention changes methotrexate (1 RCT; 50 participants) (very low certainty).

1 finding from 1 review

Closed‐system transfer device plus safe handling vs safe handling alone

Methotrexate · healthcare staff who handle infusional hazardous drugs

It is very uncertain whether closed‐system transfer device plus safe handling changes methotrexate compared with safe handling alone (very low certainty).

1 finding from 1 review

Mycophenolate mofetil vs methotrexate

Prevention of acute GVHD grade II to IV · people receiving allogeneic hematopoietic stem cell transplantation

It is very uncertain whether mycophenolate mofetil changes prevention of acute GVHD grade II to IV compared with methotrexate (very low certainty).

1 finding from 1 review

Mycophenolate mofetil vs methotrexate

Incidence of narcotic use for pain control · people receiving allogeneic hematopoietic stem cell transplantation

Mycophenolate mofetil may leads to lower incidence of narcotic use for pain control compared with methotrexate (low certainty).

1 finding from 1 review

Folic or folinic acid (any) vs placebo

Gastrointestinal adverse events · Patients receiving methotrexate for rheumatoid arthritis

Folic or folinic acid (any) probably leads to lower GI side effects (nausea, vomiting, abdominal pain) compared with placebo (moderate certainty).

1 finding from 1 review

Summary of findings: Folic acid vs placebo

Liver toxicity (incidence of transaminase elevation) · Patients receiving methotrexate for rheumatoid arthritis

Folic acid probably leads to lower liver toxicity (ie, incidence of transaminase elevation) compared with placebo (moderate certainty).

1 finding from 1 review

Summary of findings: Folic acid vs placebo

Haematological disorders (neutropenia, etc) · Patients receiving methotrexate for rheumatoid arthritis

Folic acid showed no clear difference in haematological disorders (incidence of neutropenia, etc) compared with placebo (low certainty).

1 finding from 1 review