Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

3,234 questions · 3,357 findings · 396 reviews

No studies found 803 · 23.9%GRADE not reported 270 · 8%Very low 757 · 22.5%Low 859 · 25.6%Moderate 486 · 14.5%High 182 · 5.4%

Oral retinoids: alitretinoin 30 mg vs placebo

Primary: investigator‐rated good/excellent control of symptoms · people with moderate to severe chronic hand eczema

Oral retinoids: alitretinoin 30 mg leads to higher primary: investigator‐rated good/excellent control of symptoms compared with placebo (high certainty).

1 finding from 1 review

Oral retinoids: alitretinoin 30 mg vs placebo

Primary: participant‐rated good/excellent control of symptoms · people with moderate to severe chronic hand eczema

Oral retinoids: alitretinoin 30 mg leads to higher primary: participant‐rated good/excellent control of symptoms… compared with placebo (high certainty).

1 finding from 1 review

Oral retinoids: alitretinoin 30 mg vs placebo

Adverse effects: headache · people with moderate to severe chronic hand eczema

Oral retinoids: alitretinoin 30 mg leads to higher primary: adverse events ‐ headache Folluw‐up: 48 weeks to 72 weeks compared with placebo (high certainty).

1 finding from 1 review

Oral retinoids: alitretinoin 30 mg vs placebo

Secondary: investigator‐rated reduction in severity in TLSSc and mTLSSd · people with moderate to severe chronic hand eczema

The review found no eligible studies for this question.

1 finding from 1 review

Oral retinoids: alitretinoin 10 mg vs placebo

Primary: investigator‐rated good/excellent control of symptoms · people with moderate to severe chronic hand eczema

Oral retinoids: alitretinoin 10 mg leads to higher primary: investigator‐rated good/excellent control of symptoms compared with placebo (high certainty).

1 finding from 1 review

Oral retinoids: alitretinoin 10 mg vs placebo

Primary: participant‐rated good/excellent control of symptoms · people with moderate to severe chronic hand eczema

Oral retinoids: alitretinoin 10 mg leads to higher primary: participant‐rated good/excellent control of symptoms compared with placebo (high certainty).

1 finding from 1 review

Oral retinoids: alitretinoin 10 mg vs placebo

Primary outcome 3: Adverse events · people with moderate to severe chronic hand eczema

Oral retinoids: alitretinoin 10 mg showed no clear difference in primary: all adverse events compared with placebo (moderate certainty).

1 finding from 1 review

Acetaminophen plus Diphenhydramine vs placebo

Febrile reactions (fever with or without chills, chills with or without rigors) ‐ Intention‐to treat analysis · patients with requirement of prophylaxis to avoid allergic and febrile non‐haemolytic transfusion reactions

Acetaminophen plus Diphenhydramine showed no clear difference in febrile reactions (fever with or without chills, chills with or… compared with placebo (low certainty).

1 finding from 1 review