Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

121 questions · 122 findings · 19 reviews · Headline outcomes only

No studies found 25 · 20.5%GRADE not reported 23 · 18.9%Very low 20 · 16.4%Low 36 · 29.5%Moderate 15 · 12.3%High 3 · 2.5%

NB‐UVB plus retinoid vs PUVA plus retinoid

Percentage of participants reaching PASI 75 · People with chronic plaque or guttate psoriasis

NB‐UVB plus retinoid showed no clear difference in percentage of participants reaching PASI 75 compared with PUVA plus retinoid (low certainty).

1 finding from 1 review