Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,756 questions · 11,779 findings · 747 reviews · Headline outcomes only

No studies found 3,205 · 27.2%GRADE not reported 628 · 5.3%Very low 3,261 · 27.7%Low 2,913 · 24.7%Moderate 1,453 · 12.3%High 319 · 2.7%

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Etretinate with PUVA therapy as co‐intervention vs placebo with PUVA therapy

Proportion of participants with adverse effects ‐ measured over 8 weeks · chronic palmoplantar pustulosis

It is very uncertain whether etretinate with PUVA therapy as co‐intervention changes proportion of participants with adverse effects ‐ measured over 20… compared with placebo with PUVA therapy (very low certainty).

1 finding from 1 review

Etretinate vs PUVA

Proportion of participants cleared or almost cleared ‐ · chronic palmoplantar pustulosis

It is very uncertain whether etretinate changes proportion of participants cleared or almost cleared in the short… compared with PUVA therapy (very low certainty).

1 finding from 1 review

Etretinate vs PUVA

Proportion of participants with adverse effects serious or severe enough to have caused withdrawal ‐ not reported · chronic palmoplantar pustulosis

The review found no eligible studies for this question.

1 finding from 1 review

Etretinate vs PUVA

Proportion of participants with at least 50% improvement in their quality of life ‐ not reported · chronic palmoplantar pustulosis

The review found no eligible studies for this question.

1 finding from 1 review

Etretinate vs PUVA

Proportion of participants achieving a 50% reduction in disease severity ‐ not reported · chronic palmoplantar pustulosis

The review found no eligible studies for this question.

1 finding from 1 review

Etretinate vs PUVA

Proportion of participants without relapse in the long term ‐ not reported · chronic palmoplantar pustulosis

The review found no eligible studies for this question.

1 finding from 1 review

Etretinate vs PUVA

Proportion of participants with adverse effects ‐ measured over 8 weeks · chronic palmoplantar pustulosis

It is very uncertain whether etretinate changes proportion of participants with adverse effects ‐ measured over 12… compared with PUVA therapy (very low certainty).

1 finding from 1 review

Etretinate vs PUVA

Ease of compliance to an intervention or a treatment ‐ not reported · chronic palmoplantar pustulosis

The review found no eligible studies for this question.

1 finding from 1 review

Alitretinoin vs placebo

Proportion of participants with adverse effects serious or severe enough to have caused withdrawal ‐ not reported · chronic palmoplantar pustulosis

The review found no eligible studies for this question.

1 finding from 1 review

Alitretinoin vs placebo

Proportion of participants with at least 50% improvement in their quality of life ‐ not reported · chronic palmoplantar pustulosis

The review found no eligible studies for this question.

1 finding from 1 review

Alitretinoin vs placebo

Proportion of participants achieving a 50% reduction in disease severity · chronic palmoplantar pustulosis

Alitretinoin showed no clear difference in proportion of participants achieving a 50% reduction in disease… compared with placebo (moderate certainty).

1 finding from 1 review

Alitretinoin vs placebo

Proportion of participants with adverse effects ‐ measured over 8 weeks · chronic palmoplantar pustulosis

Alitretinoin showed no clear difference in proportion of participants with adverse effects ‐ measured over 24… compared with placebo (moderate certainty).

1 finding from 1 review