Total | 74 017 | 12.1 (11.9 to 12.4) | 9.1 (8.9 to 9.3) | 0.9 (0.8 to 1.0) | 2.1 (2.0 to 2.2) |
Sex |
Male | 37 684 | 12.8 (12.5 to 13.2) | 9.9 (9.6 to 10.2) | 0.9 (0.8 to 1.0) | 2.1 (1.9 to 2.2) |
Female | 36 240 | 11.4 (11.1 to 11.8) | 8.3 (8.0 to 8.6) | 0.9 (0.8 to 1.0) | 2.2 (2.0 to 2.3) |
Gestational age at birth, weeks |
22–27 | 134 | 15.7 (10.5 to 22.8) | 11.2 (6.9 to 17.7) | 2.2 (0.8 to 6.4) | 2.2 (0.8 to 6.4) |
28–33 | 766 | 14.6 (12.4 to 17.7) | 11.8 (9.7 to 14.5) | 1.3 (0.7 to 2.4) | 1.6 (1.0 to 3.0) |
34–36 | 3566 | 13.2 (12.2 to 14.4) | 10.5 (9.5 to 11.5) | 1.1 (0.8 to 1.5) | 1.6 (1.3 to 2.1) |
37–41 | 69 315 | 12.1 (11.8 to 12.3) | 9.0 (8.8 to 9.2) | 0.9 (0.8 to 1.0) | 2.2 (2.1 to 2.3) |
42–43 | 236 | 12.3 (9.0 to 16.4) | 10.6 (7.6 to 14.6) | 0.3 (0.1 to 1.9) | 1.3 (0.5 to 3.4) |
Birth weight, g |
<1500 | 454 | 15.6 (12.6 to 19.3) | 12.3 (9.6 to 15.7) | 1.8 (0.9 to 3.4) | 1.5 (0.8 to 3.2) |
1500–2499 | 6525 | 13.0 (12.2 to 13.8) | 10.0 (9.3 to 10.7) | 1.1 (8.6 to 13.7) | 1.9 (1.6 to 2.3) |
2500+ | 66 934 | 12.0 (11.8 to 12.3) | 9.0 (8.8 to 9.2) | 0.9 (0.8 to 1.0) | 2.1 (2.0 to 2.3) |
Birth length, cm |
<40 | 392 | 17.4 (13.9 to 21.4) | 14.0 (10.9 to 17.8) | 1.8 (0.9 to 3.6) | 1.5 (0.7 to 3.3) |
40–44.9 | 2693 | 12.7 (11.5 to 14.0) | 10.0 (9.0 to 11.2) | 1.1 (0.8 to 1.5) | 1.6 (1.2 to 2.1) |
45–49.9 | 46 935 | 12.2 (11.9 to 12.5) | 9.1 (8.8 to 9.4) | 0.9 (0.8 to 1.0) | 2.2 (2.1 to 2.3) |
50+ | 20 490 | 12.0 (11.5 to 12.4) | 9.1 (8.7 to 9.5) | 0.9 (0.8 to 1.0) | 2.1 (1.9 to 2.3) |
Head circumference at birth, cm |
<25 | 156 | 17.3 (12.2 to 24.0) | 14.7 (10.0 to 21.2) | 1.9 (0.7 to 5.5) | 0.6 (1.1 to 3.5) |
25–29.9 | 940 | 14.9 (12.8 to 17.3) | 11.2 (9.3 to 13.3) | 1.4 (0.8 to 2.4) | 2.3 (1.6 to 3.5) |
30–32.9 | 22 199 | 12.4 (12.0 to 12.9) | 9.2 (8.9 to 9.6) | 1.0 (0.9 to 1.2) | 2.2 (2.0 to 2.4) |
33+ | 46 693 | 12.0 (11.7 to 12.3) | 9.1 (8.8 to 9.3) | 0.9 (0.8 to 1.0) | 2.1 (2.0 to 2.2) |