From: Australian national birthweight percentiles by sex and gestational age for twins, 2001–2010
Gestation (weeks) | No. of births | Mean (g) | Standard deviation | Birthweight percentile (g) | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
p3 | p5 | p10 | p25 | p50 | p75 | p90 | p95 | p97 | ||||
20 | 42 | 338 | 50 | . | . | . | 300 | 340 | 369 | . | . | . |
21 | 90 | 402 | 73 | . | . | 320 | 355 | 400 | 450 | 495 | . | . |
22 | 131 | 495 | 72 | 320 | 350 | 400 | 450 | 510 | 540 | 580 | 600 | 620 |
23 | 166 | 560 | 77 | 400 | 440 | 470 | 505 | 560 | 610 | 650 | 695 | 718 |
24 | 216 | 666 | 96 | 477 | 490 | 525 | 617 | 673 | 724 | 784 | 820 | 840 |
25 | 234 | 760 | 114 | 510 | 540 | 610 | 695 | 760 | 840 | 900 | 940 | 968 |
26 | 297 | 883 | 161 | 555 | 610 | 686 | 775 | 880 | 986 | 1080 | 1156 | 1205 |
27 | 323 | 1010 | 161 | 616 | 716 | 804 | 912 | 1019 | 1116 | 1200 | 1270 | 1300 |
28 | 478 | 1153 | 201 | 720 | 780 | 890 | 1030 | 1160 | 1290 | 1410 | 1450 | 1505 |
29 | 563 | 1297 | 219 | 757 | 875 | 1000 | 1180 | 1327 | 1450 | 1545 | 1625 | 1660 |
30 | 720 | 1453 | 246 | 930 | 991 | 1128 | 1314 | 1477 | 1600 | 1755 | 1850 | 1928 |
31 | 1059 | 1628 | 255 | 1120 | 1172 | 1285 | 1470 | 1632 | 1790 | 1942 | 2060 | 2120 |
32 | 1638 | 1784 | 292 | 1180 | 1275 | 1400 | 1596 | 1799 | 1972 | 2155 | 2245 | 2316 |
33 | 2040 | 1999 | 304 | 1410 | 1469 | 1590 | 1815 | 2010 | 2200 | 2370 | 2486 | 2555 |
34 | 3408 | 2179 | 328 | 1530 | 1618 | 1760 | 1970 | 2180 | 2400 | 2600 | 2704 | 2780 |
35 | 4503 | 2382 | 340 | 1755 | 1830 | 1950 | 2155 | 2380 | 2600 | 2810 | 2950 | 3040 |
36 | 7319 | 2589 | 359 | 1910 | 1995 | 2135 | 2350 | 2595 | 2820 | 3044 | 3185 | 3280 |
37 | 10665 | 2768 | 355 | 2100 | 2190 | 2315 | 2530 | 2765 | 3000 | 3215 | 3356 | 3470 |
38 | 7601 | 2901 | 357 | 2240 | 2320 | 2450 | 2665 | 2894 | 3130 | 3365 | 3510 | 3620 |
39 | 1129 | 2982 | 364 | 2260 | 2415 | 2538 | 2730 | 2980 | 3220 | 3460 | 3600 | 3695 |
40 | 308 | 3031 | 427 | 2275 | 2330 | 2470 | 2743 | 3040 | 3275 | 3600 | 3790 | 3960 |
41 | 25 | 3199 | 558 | . | . | . | 2805 | 3015 | 3500 | . | . | . |
42 | 8 | 2969 | 459 | . | . | . | 2500 | 2980 | 3400 | . | . | . |