Peter Pharoah conducted a study comparing the livebirth prevalence of congenital anomalies in children with CP living in Merseyside UK to the prevalence of congenital anomalies in 8 UK EUROCAT population-based congenital anomaly registers 1. EUROCAT is a European network of population-based registries for the epidemiologic surveillance of congenital anomalies. Currently, the network consists of 39 active registries in 20 countries covering 26% of the European birth population 2. The published article contained two misleading statements regarding EUROCAT data which we wish to clarify. 1. While it is true that our website data prevalence tables only display total birth denominators, livebirth denominators for the EUROCAT registers are available on request 2. Contrary to the statement published in Pharoah’s paper, EUROCAT records prevalence information for both congenital hip dislocation and talipes from 1980 onwards, available at http://www.eurocat.ulster.ac.uk/pubdata/tables.html. Our website Prevalence Data Tables provide European prevalence information for 96 EUROCAT congenital anomaly subgroups. 1 Pharoah POD (2007). Prevalence and pathogenesis of congenital anomalies in cerebral palsy. Archives of Disease in Childhood 92 (6): F489-F493 2 Dolk H (2005). EUROCAT: 25 Years of European Surveillance of Congenital Anomalies. Archives of Disease in Childhood 90 (5): F355-F358