Completed gestational week | Abdominal circumference (mm) | Estimated fetal weight (gram) | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Both Genders Pooled | Male | Female | Both Genders Pooled | Male | Female | |||||||||||||
N | Mean | SD | N | Mean | SD | N | Mean | SD | N | Mean | SD | N | Mean | SD | N | Mean | SD | |
18 | 10 | 133 | 7 | 8 | 134 | 8 | 2 | 131 | 2 | 9 | 244 | 25 | 7 | 243 | 26 | 2 | 250 | 26 |
19 | 81 | 142 | 7 | 38 | 144 | 7 | 43 | 140 | 7 | 80 | 288 | 26 | 37 | 295 | 29 | 43 | 282 | 23 |
20 | 148 | 153 | 7 | 79 | 154 | 6 | 69 | 151 | 7 | 146 | 344 | 32 | 79 | 348 | 31 | 67 | 340 | 32 |
21 | 57 | 161 | 8 | 35 | 163 | 6 | 22 | 158 | 9 | 55 | 393 | 37 | 33 | 403 | 29 | 22 | 379 | 43 |
22 | 5 | 158 | 7 | 1 | 151 | -- | 4 | 160 | 7 | 4 | 408 | 43 | 0 | -- | -- | 4 | 408 | 43 |
24 | 3 | 201 | 4 | 2 | 202 | 6 | 1 | 199 | -- | 3 | 748 | 14 | 2 | 743 | 16 | 1 | 758 | -- |
25 | 17 | 207 | 11 | 8 | 206 | 10 | 9 | 207 | 12 | 16 | 787 | 78 | 7 | 777 | 79 | 9 | 794 | 82 |
26 | 120 | 215 | 10 | 67 | 217 | 9 | 53 | 213 | 10 | 118 | 894 | 83 | 66 | 903 | 84 | 52 | 883 | 81 |
27 | 122 | 223 | 9 | 62 | 225 | 8 | 60 | 221 | 9 | 121 | 1005 | 98 | 62 | 1023 | 97 | 59 | 986 | 98 |
28 | 36 | 233 | 11 | 20 | 235 | 10 | 16 | 232 | 12 | 36 | 1132 | 128 | 20 | 1139 | 109 | 16 | 1123 | 151 |
29 | 8 | 245 | 9 | 6 | 248 | 8 | 2 | 238 | 8 | 8 | 1281 | 105 | 6 | 1331 | 57 | 2 | 1130 | 6 |
30 | 3 | 251 | 5 | 1 | 254 | -- | 2 | 250 | 6 | 2 | 1452 | 97 | 1 | 1521 | -- | 1 | 1384 | -- |
31 | 23 | 269 | 12 | 12 | 268 | 15 | 11 | 270 | 8 | 21 | 1744 | 164 | 10 | 1715 | 198 | 11 | 1771 | 130 |
32 | 151 | 279 | 12 | 80 | 280 | 12 | 71 | 278 | 13 | 151 | 1898 | 189 | 80 | 1922 | 186 | 71 | 1871 | 189 |
33 | 116 | 287 | 13 | 63 | 289 | 11 | 53 | 284 | 14 | 112 | 2063 | 207 | 62 | 2101 | 192 | 50 | 2016 | 218 |
34 | 15 | 295 | 10 | 9 | 299 | 7 | 6 | 289 | 12 | 15 | 2239 | 201 | 9 | 2308 | 162 | 6 | 2134 | 223 |
35 | 5 | 305 | 21 | 2 | 288 | 11 | 3 | 316 | 18 | 4 | 2458 | 429 | 2 | 2156 | 204 | 2 | 2761 | 381 |