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For example, between 19, among babies with Down syndrome, the rate of death during the first year of life declined from 8.5% to 5.0%, a decrease of about 41%. The number of infants with Down syndrome that die before one year of age has declined over time.In the same time period, about 88% of babies born with Down syndrome survived to 20 years of age. Between 19, about 93% of babies born with Down syndrome survived to one year of age.Infants with Down syndrome who also had a congenital heart defect (CHD) were five times more likely to die in the first year of life compared to infants with Down syndrome who did not have a CHD.More research is needed to help understand why. Black or African-American infants with Down syndrome have a lower chance of surviving beyond the first year of life compared with white infants with Down syndrome.This is called “very low birth weight.” These babies are 24 times more likely to die in the first 28 days of life compared to infants with Down syndrome of normal birth weight (between 2,500 grams and 4,000 grams, or between 5.5 and 8.8 pounds). Sometimes infants with Down syndrome are born weighing less than 1,500 grams, or about 3.3 pounds.Many factors can affect how long a person with Down syndrome lives.In 2007, on average, persons with Down syndrome lived to be about 47 years old. In 1960, on average, persons with Down syndrome lived to be about 10 years old. The life expectancy of people with Down syndrome increased dramatically between 19.What is the life expectancy for people with Down syndrome? This means that in 2008 about 250,700 children, teens, and adults were living with Down syndrome in the United States.

Researchers estimated that in 2008 about 1 out of every 1,200 people (children, teens, and adults) living in the United States had Down syndrome.This means that in 2002 about 83,000 children and teenagers were living with Down syndrome. In 2002, about 1 out of every 1,000 children and teenagers (0 to 19 years old) living in the United States had Down syndrome.