Trisomy 18 is the second most common autosomal disorder around the world. Compared to other conditions such as this that cause abnormal mutations in the number of chromosomes, Edward's
Syndrome does not occur in one ethnic group compared to another. Scientists are unable to determine the exact number of newborns who suffer from Edward's
Syndrome because of the increased amount of still born and miscarriages that are associated with these cases and the termination of pregnancies.
Studies have been performed in several countries around the world to observe if Edward's
Syndrome occurs more commonly in one region compared to another but the results were inconclusive. By observing these cases some statistics have been able to be determined such s the differences in gender survival rates and even the occurrence in newborns.Research studies documented by Anna Cereda and John C Carey show the following key statistics:
Another journal that account for the statistics of this life threatening disease is the Gale Encyclopedia of Genetic Disorders written in 2002.
- "the prevalence at birth is higher in females compared to males (F:M %, 60.4)"
- "although in electrically terminated fetuses this ratio is approximately (F:M %, 48:51)"
- "the frequency of fetal loss is higher for males compared to females"
- "live born females showed better survival rates than males"
Another journal that account for the statistics of this life threatening disease is the Gale Encyclopedia of Genetic Disorders written in 2002.
- "Edward's Syndrome occurs in approximately one in every 5,000 births"
- "In the United States, parents of these children on average are 32 years of age compared to the overall of 26"
- "a 20-year-old woman has about a 1 in 10,000 chance of having a child with trisomy 18, while the risk of having a child with any chromosomal disorder at that age is 1 in 800. By age 35, those same risks have risen to 1 in 2,000 and 1 in 200 respectively, and increase to 1 in 600 and 1 in 65 at age 40."
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