Calculated risk for Down Syndrome

kaduts71@..au:
Just for your info... here's the possible risk involve for Down's syndrome accordign to mum's age...note: risk also higher if father is older... these are just the risk but Allah know best DS is due to chromosomal problems and it can occur at any age but relatively higher chances when someone gets older. That's why Down syndrome can also occur if the mum is 18 yrs old. At age 37, the chances of NORMAL (not Down's) baby is 328/329 (looking on the other side of the coin)!!

Mother's age 15 years, Down Syndrome risk factor is 1 pregnancy in 1663

Maternal age 16 years, Down Syndrome risk factor is 1 pregnancy in 1659

Mother's age 17 years, Down Syndrome risk factor is 1 pregnancy in 1654

Maternal age 18 years, Down Syndrome risk factor is 1 pregnancy in 1647

Mother's age 19 years, Down Syndrome risk factor is 1 pregnancy in 1638

Maternal age 20 years, Down Syndrome risk factor is 1 pregnancy in 1627

Mother's age 21 years, Down Syndrome risk factor is 1 pregnancy in 1611

Maternal age 22 years, Down Syndrome risk factor is 1 pregnancy in 1591

Mother's age 23 years, Down Syndrome risk factor is 1 pregnancy in 1564

Maternal age 24 years, Down Syndrome risk factor is 1 pregnancy in 1531

Mother's age 25 years, Down Syndrome risk factor is 1 pregnancy in 1487

Maternal age 26 years, Down Syndrome risk factor is 1 pregnancy in 1433

Mother's age 27 years, Down Syndrome risk factor is 1 pregnancy in 1367

Maternal age 28 years, Down Syndrome risk factor is 1 pregnancy in 1288

Mother's age 29 years, Down Syndrome risk factor is 1 pregnancy in 1195

Maternal age 30 years, Down Syndrome risk factor is 1 pregnancy in 1089

Mother's age 31 years, Down Syndrome risk factor is 1 pregnancy in 975

Maternal age 32 years, Down Syndrome risk factor is 1 pregnancy in 855

Mother's age 33 years, Down Syndrome risk factor is 1 pregnancy in 733

Maternal age 34 years, Down Syndrome risk factor is 1 pregnancy in 617

Mother's age 35 years, Down Syndrome risk factor is 1 pregnancy in 509

Maternal age of 36 years, Down Syndrome risk factor is 1 pregnancy in 412

Mother's age of 37 years, Down Syndrome risk factor is 1 pregnancy in 329

Maternal age of 38 years, Down Syndrome risk factor is 1 pregnancy in 259

Mother's age of 39 years, Down Syndrome risk factor is 1 pregnancy in 202

Maternal age of 40 years, Down Syndrome risk factor is 1 pregnancy in 156

Mother's age 41 years, Down Syndrome risk factor is 1 pregnancy in 119

Maternal age 42 years, Down Syndrome risk factor is 1 pregnancy in 91

Mother's age 43 years, Down Syndrome risk factor is 1 pregnancy in 69

Maternal age 44 years, Down Syndrome risk factor is 1 pregnancy in 52

Mother's age 45 years, Down Syndrome risk factor is 1 pregnancy in 40

Maternal age 46 years, Down Syndrome risk factor is 1 pregnancy in 20

Mother's age 48 years, Down Syndrome risk factor is 1 pregnancy in 16

Maternal age 49 years, Down Syndrome risk factor is 1 pregnancy in 12

..of it being a Down Syndrome pregnancy. According to Hook, E.G., Lindsjo, A.