Table 2 Reference intervals for GSD, YSD, CRL and HR based on GD
Gestational days | n | GSD (mm) | CRL (mm) | YSD (mm) | HR (bpm) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
5th | 50th | 95th | 5th | 50th | 95th | 5th | 50th | 95th | 5th | 50th | 95th | ||
42 | 159 | 11.5 | 16.0 | 21.5 | 1.5 | 2.2 | 4.0 | 3.0 | 3.6 | 4.5 | 96.0 | 108.0 | 117.0 |
43 | 503 | 12.0 | 17.0 | 23.5 | 1.8 | 2.6 | 4.1 | 3.0 | 3.6 | 4.6 | 101.2 | 109.0 | 115.0 |
44 | 2077 | 13.5 | 18.0 | 24.0 | 2.0 | 3.0 | 4.3 | 3.0 | 3.6 | 4.6 | 104.0 | 112.0 | 121.0 |
45 | 12,687 | 14.0 | 19.0 | 25.0 | 2.4 | 3.4 | 4.9 | 3.1 | 3.7 | 4.6 | 103.0 | 117.0 | 128.0 |
46 | 2726 | 14.0 | 19.5 | 26.0 | 2.6 | 3.9 | 5.7 | 3.1 | 3.8 | 4.7 | 103.0 | 118.0 | 129.0 |
47 | 1472 | 14.5 | 21.0 | 28.0 | 3.0 | 4.8 | 7.2 | 3.1 | 3.9 | 4.9 | 112.0 | 122.0 | 135.0 |
48 | 648 | 14.5 | 21.5 | 29.0 | 3.4 | 5.6 | 8.1 | 3.2 | 4.0 | 5.0 | 114.0 | 124.0 | 140.0 |
49 | 389 | 13.8 | 22.5 | 31.8 | 3.9 | 6.7 | 9.5 | 3.3 | 4.1 | 5.0 | 120.0 | 132.0 | 148.0 |
50 | 366 | 15.0 | 23.5 | 33.5 | 4.7 | 8.0 | 10.8 | 3.4 | 4.2 | 5.3 | 122.0 | 135.0 | 150.0 |
51 | 326 | 15.9 | 24.5 | 32.8 | 5.4 | 8.9 | 11.8 | 3.6 | 4.3 | 5.3 | 121.0 | 140.0 | 154.0 |
52 | 760 | 17.0 | 26.0 | 35.5 | 6.1 | 10.1 | 12.6 | 3.6 | 4.3 | 5.3 | 128.1 | 147.0 | 158.0 |
53 | 321 | 16.6 | 26.0 | 35.0 | 8.0 | 10.8 | 13.7 | 3.6 | 4.4 | 5.5 | 134.0 | 149.0 | 168.6 |
54 | 328 | 18.5 | 28.0 | 37.5 | 9.0 | 12.4 | 15.2 | 3.9 | 4.5 | 5.4 | 136.9 | 154.0 | 169.0 |
55 | 479 | 21.0 | 29.0 | 37.5 | 10.2 | 13.6 | 16.4 | 3.8 | 4.5 | 5.4 | 145.0 | 159.0 | 173.0 |
56 | 269 | 20.5 | 30.5 | 39.5 | 10.5 | 14.6 | 17.2 | 3.9 | 4.6 | 5.4 | 142.5 | 162.0 | 174.0 |
57 | 280 | 21.5 | 31.5 | 41.5 | 11.9 | 15.8 | 19.0 | 3.8 | 4.6 | 5.5 | 148.0 | 167.0 | 181.9 |
58 | 199 | 23.0 | 33.0 | 42.5 | 13.9 | 17.1 | 20.1 | 4.0 | 4.6 | 5.5 | 149.0 | 170.0 | 185.0 |
59 | 230 | 24.5 | 34.0 | 45.7 | 15.1 | 18.3 | 21.0 | 4.0 | 4.8 | 5.7 | 160.0 | 174.0 | 185.0 |
60 | 321 | 28.1 | 35.5 | 44.5 | 16.7 | 19.1 | 21.6 | 4.0 | 4.7 | 5.7 | 162.2 | 174.0 | 188.0 |
61 | 563 | 29.5 | 36.5 | 46.5 | 18.0 | 20.2 | 22.4 | 4.0 | 4.8 | 5.6 | 167.0 | 176.0 | 188.0 |
62 | 2247 | 30.5 | 37.5 | 47.3 | 19.0 | 21.0 | 23.2 | 4.2 | 4.8 | 5.6 | 160.0 | 176.0 | 188.0 |
63 | 662 | 31.0 | 38.0 | 47.5 | 19.5 | 21.8 | 24.4 | 4.1 | 4.9 | 5.7 | 161.2 | 176.0 | 188.0 |
64 | 583 | 31.5 | 39.0 | 48.9 | 20.3 | 23.0 | 25.3 | 4.2 | 5.0 | 5.8 | 164.0 | 178.0 | 188.0 |
65 | 319 | 32.0 | 40.0 | 50.5 | 21.0 | 24.0 | 26.9 | 4.2 | 5.0 | 5.8 | 164.0 | 176.0 | 186.0 |
66 | 207 | 32.5 | 40.0 | 50.5 | 21.7 | 25.0 | 28.8 | 4.2 | 5.1 | 5.9 | 164.0 | 178.0 | 190.6 |
67 | 282 | 33.6 | 42.5 | 51.0 | 22.5 | 26.5 | 30.8 | 4.4 | 5.2 | 6.0 | 158.2 | 176.0 | 190.0 |
68 | 57 | 37.5 | 44.5 | 55.2 | 23.9 | 28.9 | 31.0 | 4.3 | 5.2 | 6.8 | 161.4 | 174.0 | 188.0 |
69 | 157 | 31.4 | 43.5 | 53.0 | 24.0 | 29.1 | 33.0 | 4.3 | 5.2 | 6.1 | 166.9 | 176.0 | 189.1 |
70 | 106 | 35.9 | 43.5 | 54.5 | 26.0 | 31.0 | 34.1 | 4.4 | 5.1 | 6.0 | 156.4 | 176.0 | 186.7 |
71 | 121 | 35.1 | 46.0 | 56.4 | 27.9 | 32.3 | 36.4 | 4.3 | 5.2 | 6.2 | 164.0 | 175.0 | 188.0 |
72 | 255 | 38.4 | 47.0 | 57.0 | 29.2 | 34.3 | 38.4 | 4.4 | 5.2 | 6.2 | 158.0 | 174.0 | 186.0 |
73 | 132 | 37.0 | 46.0 | 56.2 | 31.6 | 36.4 | 41.7 | 4.5 | 5.4 | 6.7 | 159.7 | 174.0 | 186.7 |
74 | 104 | 37.0 | 48.0 | 60.3 | 33.1 | 38.0 | 42.9 | 4.2 | 5.3 | 6.5 | 160.0 | 173.5 | 185.0 |
75 | 51 | 39.0 | 49.0 | 62.4 | 34.5 | 38.3 | 46.4 | 4.2 | 5.3 | 6.9 | 162.6 | 171.0 | 186.2 |
76 | 30 | 37.4 | 49.0 | 62.2 | 35.0 | 40.1 | 45.1 | 4.3 | 5.5 | 6.9 | 164.0 | 172.0 | 188.9 |