Growth and development in Down's syndrome. A series of 337 children from Veneto, Italy

A group of 205 boys and 132 girls with Down's syndrome, raised at home have been followed up at this center from 1970 to date. All were ambulatory and all trisom i c 2 I. The present study, analyzed data from longitudinal observations on standing height, weight, and head circumference, measured by standard anthropometric procedures and, when available, from the psycho motor milestones. The parental age at birth was also recorded and compared to the controls. All data were compared to those of 2500 and 2300 normal boys and girls, respectively, from the same area (Veneto Italy)