Incidence of Down Syndrome and Maternal Age
Maternal
Age |
Incidence
of Down Syndrome |
20 |
1 in 2000 |
24 |
1 in 1300 |
27 |
1 in 1050 |
30 |
1 in 900 |
33 |
1 in 600 |
36 |
1 in 300 |
40 |
1 in 100 |
42 |
1 in 70 |
45 |
1 in 30 |
47 |
1 in 20 |
48 |
1 in 15 |
49 |
1 in 10 |