What race is most affected by Down syndrome?

What ethnic group has the highest rate of birth defects?

The risk of infant death from birth defects varied among racial/ethnic groups, but for all ethnic groups, the risk was higher than for white infants. American Indians had the highest rates of lethal birth defects, followed by Asians, Hispanics, and blacks.

Who is Down syndrome most common in?

Women who are 35 years or older when they become pregnant are more likely to have a pregnancy affected by Down syndrome than women who become pregnant at a younger age. However, the majority of babies with Down syndrome are born to mothers less than 35 years old, because there are many more births among younger women.

Is Down syndrome more common in males or females?

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.

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Is Down syndrome common in Africa?

Down syndrome (DS) is the most common chromosomal disorder in newborns, with a birth prevalence of approximately 2/1 000 live births in South Africa (SA).

Are mixed race babies more likely to have birth defects?

Conclusions. Mixed race black and white couples face higher odds of prematurity and low birth weight, which appear to contribute to the substantially higher demonstrated risk for stillbirth. There are likely additional unmeasured factors that influence birth outcomes for mixed race couples.

What race has lowest birth defects?

Compared with Caucasians, the risk of birth defect was lower in African–Americans (RR = 0.9, CI 0.8–0.9) and Hispanics (RR = 0.9, CI 0.8–0.9). The risk of birth defects was similar in Caucasians and Asians (Table 1).

Which race has the least birth defects?

Cubans and Asians, especially Chinese and Asian Indians, had significantly lower occurrence of many of the studied birth defects, compared to non-Hispanic whites.

Who is more prone to birth defects?

Risk increases under any of the following conditions: family history of birth defects or other genetic disorders. drug use, alcohol consumption, or smoking during pregnancy. maternal age of 35 years or older.

What Animals Get Down syndrome?

Down syndrome occurs when a person’s cells contain a third copy of chromosome 21 (also known as trisomy 21). In turn, apes have 24 pairs of chromosomes, for a total of 48. Trisomy 22 is diagnosed when the cells of apes such as chimpanzees, gorillas or orangutans contain a third copy of chromosome 22.

Does father’s age affect Down syndrome?

Dr. Fisch and his colleagues found that the rate of Down syndrome steadily increased with advancing paternal age for the maternal age group of 35 to 39 years. The greatest increase, however, was seen in the maternal age group of 40 years and older with increasing paternal age.

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