Down Syndrome Statistics

Down Syndrome Statistics

Women with Down syndrome pregnancies have a different age distribution to the women with livebirths with Down syndrome because a large proportion of the pregnancies with Down syndrome are prenatally diagnosed and subsequently terminated. Separate analyses were performed for 3 groups: firstly mothers of all liveborn babies, secondly all mothers with a Down syndrome pregnancy and finally all mothers of livebirths with Down syndrome. From 1979 to 2003, the prevalence (total number of cases of a disease in a population at a specific time) of Down syndrome (DS) at birth increased by 31 percent, from 9 to 12 per 10,000 live births in 10 US regions. Within the 10 regions, birth prevalence of DS ranged from a low of 9.7 in Arkansas to a high of 13.7 in Utah during 1997-2003. The number of infants born with DS was almost 5 times higher among births to older mothers (38.6 per 10,000) than among births to younger mothers (7.8 per 10,000).In 2002, DS was found to be present in about 1 of every 1,000 children and  adolescents aged 0 to 19 living in 10 chosen regions of the United States, which means that approximately 83,000 children and adolescents with DS were living in the United States during that year. Prevalence of DS by age group was the highest in 0-3 year olds at 11.1, declining to 10.3 among 4-7 year olds, 9.8 among 8-11 year olds, 8.3 among 12-15 year olds, and 6.0 among 16-19 year olds.

Down Syndrome Statistics

Down Syndrome Statistics

Down Syndrome Statistics

Down Syndrome Statistics

Down Syndrome Statistics

Down Syndrome Statistics

Down Syndrome Statistics

Down Syndrome Statistics

Down Syndrome Statistics