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What do systematic reviews say?

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Evidence found and GRADE certainty

1,835 questions · 1,886 findings · 74 reviews · Skin

No studies found 542 · 28.7%GRADE not reported 130 · 6.9%Very low 326 · 17.3%Low 434 · 23%Moderate 348 · 18.5%High 106 · 5.6%

Chinese herbal medicines vs placebo

Adverse events (Analysis 1.7) Participant's report · atopic eczema

CHM showed no clear difference in adverse events (Analysis 1.7) Participant's report compared with placebo (low certainty).

1 finding from 1 review

Chinese herbal medicines vs drugs

Total effectiveness rate (Analysis 1.1) Clinician's rating · atopic eczema

It is very uncertain whether CHM changes total effectiveness rate (Analysis 2.1) Clinician's rating compared with drugs (very low certainty).

1 finding from 1 review

Chinese herbal medicines vs drugs

Total effectiveness rate with subgroup analysis ‐ individualised treatment Clinician's rating · atopic eczema

CHM may leads to higher total effectiveness rate with subgroup analysis ‐ individualised… compared with drugs (low certainty).

1 finding from 1 review

Chinese herbal medicines vs drugs

Total effectiveness rate with subgroup analysis ‐ non‐individualised treatment Clinician's rating · atopic eczema

It is very uncertain whether CHM changes total effectiveness rate with subgroup analysis ‐ non‐individualised… compared with drugs (very low certainty).

1 finding from 1 review

Intervention not reported

First recurrence · high‐risk melanoma participants

The intervention leads to lower first recurrence (high certainty).

1 finding from 1 review