What is the incidence and prevalence of Down syndrome?
Down syndrome is the most frequently occurring chromosomal congenital anomaly in Canada. In Canada, approximately 1 in every 781 babies is born with Down syndrome. There are an estimated 45,000 Canadians with Down syndrome.
What is the frequency of Down syndrome in the population?
How Many Babies are Born with Down Syndrome? Down syndrome remains the most common chromosomal condition diagnosed in the United States. Each year, about 6,000 babies born in the United States have Down syndrome. This means that Down syndrome occurs in about 1 in every 700 babies.
How common is Down syndrome UK?
For every 1,000 babies born, one will have Down’s syndrome. About 750 babies with Down’s syndrome are born in the UK each year. Down’s syndrome affects people of all ages, races, religious and economic situations. There are approximately 40,000 people with Down’s syndrome living in the UK.
What is the prevalence of Down syndrome worldwide?
Background. The estimated incidence of Down syndrome is between 1 in 1,000 to 1 in 1,100 live births worldwide. Each year, approximately 3,000 to 5,000 children are born with this chromosome disorder.
What percentage of babies have Down syndrome?
About 1 in 700 babies (less than 1 percent) is born with Down syndrome. Many children with Down syndrome lead healthy, active lives. They can go to school, participate in activities and enjoy being social with others. A person with Down syndrome may live 60 years or more.
Why is Down syndrome so common?
The number of babies born in the United States each year affected with Down syndrome is the result of several factors, including the number of fetuses conceived that carry the third copy of chromosome 21 (older mothers are more likely to conceive Down syndrome-affected fetuses, and the childbearing population in the …
Is Down syndrome more common in a particular community?
Down syndrome is the most frequent chromosomal cause of mild to moderate intellectual disability, and it occurs in all ethnic and economic groups.
What epidemiology means?
By definition, epidemiology is the study (scientific, systematic, and data-driven) of the distribution (frequency, pattern) and determinants (causes, risk factors) of health-related states and events (not just diseases) in specified populations (neighborhood, school, city, state, country, global).
What race is most affected by Down syndrome?
Results: The odds ratio and population attributable risk of Down syndrome due to maternal age of 35 years or older were highest for Mexican Americans, intermediate for African Americans, and lowest for non-Hispanic Whites.
What gender is Down syndrome most common?
Down syndrome appears to be more common among boys than girls, the study indicates. The condition is also seen more frequently in Hispanic children at birth, though the number of these children appears to level off with that of white children as they age. Black children appear less likely to have Down syndrome.