evidencegaps
Findings

What do systematic reviews say?

Refine by population, intervention, comparison or outcome
More filters
Evidence found and GRADE certainty

1,793 questions · 1,866 findings · 339 reviews

Sort:Best matchNewestHighest certaintyDownload CSV
No studies found 245 · 13.1%GRADE not reported 142 · 7.6%Very low 612 · 32.8%Low 513 · 27.5%Moderate 305 · 16.3%High 49 · 2.6%

Fractional laser vs combined chemical peeling plus needling

Participant‐assessed adverse events (short‐term) N of participants with adverse events · people with acne scars

It is very uncertain whether fractional laser changes participant‐assessed adverse events (short‐term) N of participants… compared with combined chemical peeling plus needling (very low certainty).

1 finding from 1 review

Fractional laser vs non‐fractional non‐ablative laser

Participant‐reported scar improvement (short‐term) N of participants with > 50% improvement in acne scars · people with acne scars

It is very uncertain whether fractional laser changes participant‐reported scar improvement (short‐term) N of participants… compared with non‐fractional non‐ablative laser (very low certainty).

1 finding from 1 review

Chemical peeling vs combined chemical peeling plus any active intervention

Participant‐assessed adverse events (short‐term) N of participants with adverse events · people with acne scars

It is very uncertain whether chemical peeling changes participant‐assessed adverse events (short‐term) N of participants… compared with combined chemical peeling plus any active intervention (very low certainty).

1 finding from 1 review

Fractional laser vs non‐fractional non‐ablative laser

Adverse events ‐ hyperpigmentation ( · people with acne scars

It is very uncertain whether fractional laser changes investigator‐assessed adverse events (short‐term) Hyperpigmentation… compared with non‐fractional non‐ablative laser (very low certainty).

1 finding from 1 review

Chemical peeling vs needling

Participant‐reported scar improvement (short‐term) N of participants with > 50% improvement in acne scars · people with acne scars

It is very uncertain whether chemical peeling changes participant‐reported scar improvement (short‐term) N of participants… compared with needling (very low certainty).

1 finding from 1 review

Chemical peeling vs needling

Investigator‐assessed adverse events (short‐term) · people with acne scars

Chemical peeling showed no clear difference in investigator‐assessed adverse events (short‐term) N of participants… compared with needling (low certainty).

1 finding from 1 review

Chemical peeling vs needling

Participant‐assessed adverse events (short‐term) N of participants with positive adverse events · people with acne scars

It is very uncertain whether chemical peeling changes participant‐assessed adverse events (short‐term) N of participants… compared with needling (very low certainty).

1 finding from 1 review

Injectable fillers vs placebo or no treatment

Participant‐reported scar improvement (short‐term) N of participants with > 50% improvement in acne scars · people with acne scars

Injectable fillers probably leads to higher participant‐reported scar improvement (short‐term) N of participants… compared with placebo or no treatment (moderate certainty).

1 finding from 1 review

Fractional laser vs non‐fractional non‐ablative laser

Participant‐assessed adverse events (short‐term) Burning N of participants with adverse events · people with acne scars

It is very uncertain whether fractional laser changes participant‐assessed adverse events (short‐term) Burning N of… compared with non‐fractional non‐ablative laser (very low certainty).

1 finding from 1 review

Injectable fillers vs placebo or no treatment

Participant‐assessed adverse events (short‐term) N of participants with positive adverse events · people with acne scars

Injectable fillers showed no clear difference in participant‐reported adverse events (short‐term) N of participants… compared with placebo or no treatment (low certainty).

1 finding from 1 review

Injectable fillers vs placebo or no treatment

Investigator‐assessed adverse events (short‐term) N of participants with positive adverse events · people with acne scars

Injectable fillers showed no clear difference in investigator‐assessed adverse events (short‐term) N of participants… compared with placebo or no treatment (low certainty).

1 finding from 1 review

Fractional laser vs radiofrequency

Participant‐reported scar improvement (short‐term) N of participants with > 50% improvement in acne scars · people with acne scars

It is very uncertain whether fractional laser changes participant‐reported scar improvement (short‐term) N of participants… compared with radiofrequency (very low certainty).

1 finding from 1 review

Fractional laser vs radiofrequency

Investigator‐assessed adverse events (short‐term) · people with acne scars

The review found no eligible studies for this question.

1 finding from 1 review