This book is a sequel to Epidemiology of the Cerebral Palsy (1984) and was written in response to developments in the field of cerebral palsy research since the first publication. It is an epidemiological book, written by epidemiologists in collaboration with experts from such disciplines as neurology, radiology, genetics, pathology, fetal physiology, and embryology. There are 14 chapters with a glossary of uncommon terms used throughout the book, and it concludes with the appendix, which lists cerebral palsy registers worldwide with contact details. The first few chapters give the reader some general information about cerebral palsy, including its definition and traditional classification by clinical description, prevalence, and incidence. The data are drawn from the Western Australian Cerebral Palsy Register and are compared with some other European countries, such as Sweden, Northern Ireland, and Mersey, England.