The incidence of infantile haemangioma increases with decreasing gestational age, from 1–4% in term infants to 23% in those <1000g birth weight, with a female and Caucasian predominance.
Reference: Goelz, R., & Poets, C. F. (2014). Incidence and treatment of infantile haemangioma in preterm infants. Archives of Disease in Childhood – Fetal and Neonatal Edition. doi:10.1136/archdischild-2014-306197.