Comparison 23. OnabotulinumtoxinA 30 units versus 20 units one cycle of treatment glabellar lines.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
23.1 Participant assessment of success by analysing scores and scales	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
23.1.1 4 weeks	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
23.1.2 8 weeks	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
23.1.3 12 weeks	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
23.1.4 16 weeks	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
23.2 Physician assessment of success by analysing scores and scales	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
23.2.1 4 weeks	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
23.2.2 8 weeks	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
23.2.3 12 weeks	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
23.2.4 16 weeks	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
23.3 Total adverse events	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected