Comparison 1. Pulsed dye laser versus wait‐and‐see.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Clearance	1	121	Risk Ratio (M‐H, Random, 95% CI)	0.94 [0.62, 1.42]
2 Adverse events: skin atrophy	1	121	Risk Ratio (M‐H, Random, 95% CI)	3.46 [1.36, 8.77]
3 Adverse events: skin hypopigmentation	1	121	Risk Ratio (M‐H, Random, 95% CI)	3.05 [1.57, 5.93]
4 Adverse events: minimal crusting	1	22	Risk Ratio (M‐H, Random, 95% CI)	5.0 [0.27, 93.55]
5 Adverse events: pain	1	22	Risk Ratio (M‐H, Random, 95% CI)	5.0 [0.27, 93.55]
6 Other measures of resolution: no redness	1	121	Risk Ratio (M‐H, Random, 95% CI)	4.83 [1.75, 13.36]
7 Parents who consider that their child still has a problem	1	121	Risk Ratio (M‐H, Random, 95% CI)	1.24 [0.56, 2.78]
8 Aesthetic appearance: better cosmetic outcome	1	22	Risk Ratio (M‐H, Random, 95% CI)	1.75 [0.71, 4.31]
9 Requirement for surgical correction	1	121	Risk Ratio (M‐H, Random, 95% CI)	2.37 [0.64, 8.75]