GA (weeks) | Centiles of MCA S/D to UA S/D ratio | |||||||
---|---|---|---|---|---|---|---|---|
1st | 2.5th | 5th | 10th | 90th | 95th | 97.5th | 99th | |
13.0 | 0.29 | 0.33 | 0.38 | 0.44 | 1.12 | 1.27 | 1.41 | 1.60 |
13.5 | 0.30 | 0.35 | 0.40 | 0.46 | 1.18 | 1.33 | 1.48 | 1.68 |
14.0 | 0.32 | 0.37 | 0.42 | 0.48 | 1.23 | 1.40 | 1.56 | 1.76 |
14.5 | 0.34 | 0.39 | 0.44 | 0.51 | 1.29 | 1.46 | 1.63 | 1.84 |
15.0 | 0.36 | 0.41 | 0.47 | 0.53 | 1.35 | 1.53 | 1.70 | 1.92 |
15.5 | 0.37 | 0.43 | 0.49 | 0.56 | 1.41 | 1.59 | 1.77 | 2.00 |
16.0 | 0.39 | 0.45 | 0.51 | 0.58 | 1.46 | 1.66 | 1.84 | 2.08 |
16.5 | 0.41 | 0.47 | 0.53 | 0.61 | 1.52 | 1.72 | 1.91 | 2.16 |
17.0 | 0.42 | 0.49 | 0.55 | 0.63 | 1.58 | 1.78 | 1.98 | 2.23 |
17.5 | 0.44 | 0.51 | 0.57 | 0.66 | 1.63 | 1.84 | 2.05 | 2.31 |
18.0 | 0.46 | 0.53 | 0.59 | 0.68 | 1.69 | 1.91 | 2.11 | 2.38 |
18.5 | 0.47 | 0.54 | 0.61 | 0.70 | 1.74 | 1.97 | 2.18 | 2.46 |
19.0 | 0.49 | 0.56 | 0.63 | 0.73 | 1.79 | 2.02 | 2.25 | 2.53 |
19.5 | 0.50 | 0.58 | 0.65 | 0.75 | 1.84 | 2.08 | 2.31 | 2.60 |
20.0 | 0.52 | 0.60 | 0.67 | 0.77 | 1.89 | 2.14 | 2.37 | 2.67 |
20.5 | 0.53 | 0.61 | 0.69 | 0.79 | 1.94 | 2.19 | 2.43 | 2.74 |
21.0 | 0.55 | 0.63 | 0.71 | 0.81 | 1.99 | 2.24 | 2.49 | 2.80 |
21.5 | 0.56 | 0.64 | 0.72 | 0.83 | 2.03 | 2.29 | 2.54 | 2.86 |
22.0 | 0.57 | 0.66 | 0.74 | 0.85 | 2.08 | 2.34 | 2.60 | 2.93 |
22.5 | 0.58 | 0.67 | 0.75 | 0.86 | 2.12 | 2.39 | 2.65 | 2.98 |
23.0 | 0.59 | 0.68 | 0.77 | 0.88 | 2.16 | 2.44 | 2.70 | 3.04 |
23.5 | 0.60 | 0.69 | 0.78 | 0.89 | 2.20 | 2.48 | 2.75 | 3.09 |
24.0 | 0.61 | 0.71 | 0.79 | 0.91 | 2.23 | 2.52 | 2.79 | 3.15 |
24.5 | 0.62 | 0.72 | 0.81 | 0.92 | 2.27 | 2.56 | 2.84 | 3.20 |
25.0 | 0.63 | 0.73 | 0.82 | 0.94 | 2.30 | 2.60 | 2.88 | 3.24 |
25.5 | 0.64 | 0.73 | 0.83 | 0.95 | 2.33 | 2.63 | 2.92 | 3.29 |
26.0 | 0.65 | 0.74 | 0.84 | 0.96 | 2.36 | 2.66 | 2.96 | 3.33 |
26.5 | 0.65 | 0.75 | 0.84 | 0.97 | 2.39 | 2.70 | 2.99 | 3.37 |
27.0 | 0.66 | 0.76 | 0.85 | 0.98 | 2.41 | 2.72 | 3.02 | 3.41 |
27.5 | 0.66 | 0.76 | 0.86 | 0.98 | 2.44 | 2.75 | 3.05 | 3.44 |
28.0 | 0.67 | 0.77 | 0.86 | 0.99 | 2.46 | 2.78 | 3.08 | 3.47 |
28.5 | 0.67 | 0.77 | 0.87 | 1.00 | 2.48 | 2.80 | 3.11 | 3.50 |
29.0 | 0.67 | 0.77 | 0.87 | 1.00 | 2.50 | 2.82 | 3.13 | 3.53 |
29.5 | 0.67 | 0.78 | 0.88 | 1.01 | 2.51 | 2.84 | 3.15 | 3.56 |
30.0 | 0.68 | 0.78 | 0.88 | 1.01 | 2.53 | 2.86 | 3.17 | 3.58 |
30.5 | 0.68 | 0.78 | 0.88 | 1.01 | 2.54 | 2.87 | 3.19 | 3.60 |
31.0 | 0.68 | 0.78 | 0.88 | 1.02 | 2.55 | 2.89 | 3.21 | 3.62 |
31.5 | 0.68 | 0.78 | 0.89 | 1.02 | 2.56 | 2.90 | 3.22 | 3.64 |
32.0 | 0.68 | 0.78 | 0.89 | 1.02 | 2.57 | 2.91 | 3.24 | 3.66 |
32.5 | 0.68 | 0.78 | 0.88 | 1.02 | 2.58 | 2.92 | 3.25 | 3.67 |
33.0 | 0.68 | 0.78 | 0.88 | 1.02 | 2.59 | 2.93 | 3.26 | 3.69 |
33.5 | 0.67 | 0.78 | 0.88 | 1.02 | 2.59 | 2.94 | 3.27 | 3.70 |
34.0 | 0.67 | 0.78 | 0.88 | 1.01 | 2.60 | 2.94 | 3.28 | 3.71 |
34.5 | 0.67 | 0.78 | 0.88 | 1.01 | 2.60 | 2.95 | 3.28 | 3.72 |
35.0 | 0.67 | 0.77 | 0.88 | 1.01 | 2.60 | 2.95 | 3.29 | 3.73 |
35.5 | 0.66 | 0.77 | 0.87 | 1.01 | 2.60 | 2.96 | 3.30 | 3.73 |
36.0 | 0.66 | 0.77 | 0.87 | 1.00 | 2.60 | 2.96 | 3.30 | 3.74 |
36.5 | 0.66 | 0.76 | 0.87 | 1.00 | 2.61 | 2.96 | 3.30 | 3.75 |
37.0 | 0.65 | 0.76 | 0.86 | 1.00 | 2.61 | 2.96 | 3.31 | 3.75 |
37.5 | 0.65 | 0.75 | 0.86 | 0.99 | 2.60 | 2.96 | 3.31 | 3.76 |
38.0 | 0.64 | 0.75 | 0.85 | 0.99 | 2.60 | 2.96 | 3.31 | 3.76 |
38.5 | 0.64 | 0.75 | 0.85 | 0.98 | 2.60 | 2.96 | 3.31 | 3.76 |
39.0 | 0.64 | 0.74 | 0.84 | 0.98 | 2.60 | 2.96 | 3.31 | 3.77 |
39.5 | 0.63 | 0.74 | 0.84 | 0.97 | 2.60 | 2.96 | 3.32 | 3.77 |
40.0 | 0.63 | 0.73 | 0.83 | 0.97 | 2.60 | 2.96 | 3.32 | 3.78 |