Findings

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%

Summary of Findings Table ‐ AbobotulinumtoxinA 50U vs placebo

Participant assessment of success by analysing scores and scales ‐ 20 weeks (Validated tools, wrinkles and lines at maximum contraction) · glabellar lines

Summary of Findings Table ‐ AbobotulinumtoxinA 50U leads to higher participant assessment of success by analysing scores and scales ‐… compared with placebo (high certainty).

1 finding from 1 review

Summary of Findings Table ‐ AbobotulinumtoxinA 50U vs placebo

Major adverse events (eyelid ptosis, eyelid sensory disorder, strabismus) · glabellar lines

Summary of Findings Table ‐ AbobotulinumtoxinA 50U showed no clear difference in major adverse events (eyelid ptosis, eyelid sensory disorder,… compared with placebo (moderate certainty).

1 finding from 1 review