Comparison 17. OnabotulinumtoxinA 48 units versus 16 units one cycle of treatment forehead lines.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
17.1 Participant assessment of success by analysing scores and scales	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
17.1.1 8 weeks	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
17.2 Any major adverse events (eyelid ptosis, eyelid sensory disorder, strabismus)	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
17.3 Physician assessment of success by analysing scores and scales	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
17.3.1 8 weeks	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected