Comparison 12. Injectable fillers versus placebo or no treatment.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Participant‐reported scar improvement (short‐term)	1		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
2 Investigator‐assessed scar improvement (short‐term)	1		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
3 Participant satisfaction	1		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
4 Participant‐reported adverse events (short‐term)	1		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
5 Investigator‐assessed adverse events (short‐term)	1		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
6 Within‐individual studies			Other data	No numeric data