Risk factors during pregnancy and delivery and neurological morbidity of newborns were assessed in a birth cohort in Dominica, the Caribbean. The data were compared with two reference groups, one from Grenada, the Caribbean, and the other from Groningen, the Netherlands. Despite variations in cultural and socio-economic situation, the similarities in obstetrical conditions, neonatal neurological morbidity and perinatal relationships between the three groups were more striking than the differences. The Dominican group showed a significantly higher rate of preterm births than the two other groups. Preterm birth was associated with a significant increase in neurological deviancy. In general motility and muscle tone were found to be lower in the Caribbean region than in the Netherlands.