From: Fetal age assessment based on 2nd trimester ultrasound in Africa and the effect of ethnicity
Centiles | Centiles | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
50th | 2.5th | 97.5th | 50th | 2.5th | 97.5th | ||||||||
HC (mm) | weeks | days | weeks | days | weeks | days | HC (mm) | weeks | days | weeks | days | weeks | days |
70 | 12 | 2 | 11 | 2 | 13 | 3 | 140 | 18 | 0 | 17 | 0 | 19 | 0 |
72 | 12 | 3 | 11 | 3 | 13 | 4 | 142 | 18 | 1 | 17 | 1 | 19 | 1 |
74 | 12 | 4 | 11 | 4 | 13 | 5 | 144 | 18 | 2 | 17 | 2 | 19 | 2 |
76 | 12 | 5 | 11 | 5 | 13 | 6 | 146 | 18 | 3 | 17 | 3 | 19 | 3 |
78 | 12 | 6 | 11 | 6 | 14 | 0 | 148 | 18 | 4 | 17 | 4 | 19 | 4 |
80 | 13 | 0 | 12 | 0 | 14 | 1 | 150 | 18 | 5 | 17 | 5 | 19 | 5 |
82 | 13 | 1 | 12 | 1 | 14 | 2 | 152 | 19 | 0 | 17 | 6 | 20 | 0 |
84 | 13 | 3 | 12 | 2 | 14 | 3 | 154 | 19 | 1 | 18 | 1 | 20 | 1 |
86 | 13 | 4 | 12 | 3 | 14 | 4 | 156 | 19 | 2 | 18 | 2 | 20 | 2 |
88 | 13 | 5 | 12 | 4 | 14 | 5 | 158 | 19 | 3 | 18 | 3 | 20 | 3 |
90 | 13 | 6 | 12 | 5 | 14 | 6 | 160 | 19 | 4 | 18 | 4 | 20 | 4 |
92 | 14 | 0 | 12 | 6 | 15 | 0 | 162 | 19 | 5 | 18 | 5 | 20 | 5 |
94 | 14 | 1 | 13 | 1 | 15 | 1 | 164 | 19 | 6 | 18 | 6 | 20 | 6 |
96 | 14 | 2 | 13 | 2 | 15 | 3 | 166 | 20 | 0 | 19 | 0 | 21 | 0 |
98 | 14 | 3 | 13 | 3 | 15 | 4 | 168 | 20 | 1 | 19 | 1 | 21 | 1 |
100 | 14 | 5 | 13 | 4 | 15 | 5 | 170 | 20 | 2 | 19 | 2 | 21 | 2 |
102 | 14 | 6 | 13 | 5 | 15 | 6 | 172 | 20 | 3 | 19 | 3 | 21 | 3 |
104 | 15 | 0 | 13 | 6 | 16 | 0 | 174 | 20 | 4 | 19 | 4 | 21 | 4 |
106 | 15 | 1 | 14 | 1 | 16 | 1 | 176 | 20 | 5 | 19 | 5 | 21 | 5 |
108 | 15 | 2 | 14 | 2 | 16 | 2 | 178 | 20 | 6 | 19 | 6 | 21 | 6 |
110 | 15 | 3 | 14 | 3 | 16 | 4 | 180 | 21 | 0 | 20 | 0 | 22 | 0 |
112 | 15 | 4 | 14 | 4 | 16 | 5 | 182 | 21 | 1 | 20 | 1 | 22 | 1 |
114 | 15 | 6 | 14 | 5 | 16 | 6 | 184 | 21 | 2 | 20 | 2 | 22 | 2 |
116 | 16 | 0 | 15 | 0 | 17 | 0 | 186 | 21 | 3 | 20 | 3 | 22 | 3 |
118 | 16 | 1 | 15 | 1 | 17 | 1 | 188 | 21 | 4 | 20 | 4 | 22 | 4 |
120 | 16 | 2 | 15 | 2 | 17 | 2 | 190 | 21 | 5 | 20 | 5 | 22 | 4 |
122 | 16 | 3 | 15 | 3 | 17 | 3 | 192 | 21 | 5 | 20 | 6 | 22 | 5 |
124 | 16 | 5 | 15 | 4 | 17 | 5 | 194 | 21 | 6 | 20 | 6 | 22 | 6 |
126 | 16 | 6 | 15 | 5 | 17 | 6 | 196 | 22 | 0 | 21 | 0 | 23 | 0 |
128 | 17 | 0 | 16 | 0 | 18 | 0 | 198 | 22 | 1 | 21 | 1 | 23 | 1 |
130 | 17 | 1 | 16 | 1 | 18 | 1 | 200 | 22 | 2 | 21 | 2 | 23 | 2 |
132 | 17 | 2 | 16 | 2 | 18 | 2 | 202 | 22 | 3 | 21 | 3 | 23 | 2 |
134 | 17 | 3 | 16 | 3 | 18 | 3 | 204 | 22 | 3 | 21 | 3 | 23 | 3 |
136 | 17 | 4 | 16 | 4 | 18 | 5 | 206 | 22 | 4 | 21 | 4 | 23 | 4 |
138 | 17 | 6 | 16 | 6 | 18 | 6 | 208 | 22 | 5 | 21 | 5 | 23 | 5 |
210 | 22 | 5 | 21 | 6 | 23 | 5 |