Birth weight <1500
g (n = 6237)
|
Congenital anomalies | 216.7 (65) | 89.6 (29) | 0.41 (0.27 to 0.64) | 248.8 (62) | 181.5 (52) | 0.73 (0.51 to 1.05) |
Antepartum hypoxia | 1360.0 (408) | 957.7 (310) | 0.70 (0.61 to 0.81) | 12.0 (3) | 17.5 (5) | – |
Intrapartum hypoxia | 80.0 (24) | 52.5 (17) | 0.66 (0.35 to 1.21) | 276.9 (69) | 90.8 (26) | 0.33 (0.21 to 0.51) |
Prematurity | – | – | – | 1894.1 (472) | 1406.6 (403) | 0.74 (0.66 to 0.84) |
All causes | 1693.3 (508) | 1149.2 (372) | 0.68 (0.60 to 0.77) | 2744.8 (684) | 2080.3 (596) | 0.76 (0.69 to 0.83) |
Birthweight 1500–2499
g (n = 34 835)
|
Congenital anomalies | 28.2 (49) | 17.8 (31) | 0.63 (0.40 to 0.99) | 108.2 (182) | 52.9 (90) | 0.49 (0.38 to 0.63) |
Antepartum hypoxia | 252.5 (439) | 204.6 (357) | 0.81 (0.70 to 0.93) | 0 | 3.5 (6) | – |
Intrapartum hypoxia | 34.5 (60) | 10.3 (18) | 0.30 (0.18 to 0.51) | 27.4 (46) | 15.9 (27) | 0.58 (0.36 to 0.93) |
Prematurity | – | – | – | 32.7 (55) | 7.1 (12) | 0.21 (0.12 to 0.40) |
All causes | 326.7 (568) | 248.7 (434) | 0.76 (0.67 to 0.86) | 206.4 (347) | 112.8 (192) | 0.55 (0.46 to 0.65) |
Birth weight ⩾2500
g (n = 626 586)
|
Congenital anomalies | 1.5 (48) | 0.8 (24) | 0.50 (0.31 to 0.82) | 10.0 (181) | 5.8 (181) | 0.58 (0.49 to 0.70) |
Antepartum hypoxia | 15.1 (474) | 15.1 (472) | 1.00 (0.88 to 1.14) | 0.03 (1) | 0.4 (13) | – |
Intrapartum hypoxia | 4.5 (142) | 2.6 (82) | 0.58 (0.44 to 0.76) | 3.5 (110) | 3.4 (107) | 0.98 (0.75 to 1.28) |
Prematurity | – | – | – | 0.4 (11) | 0.1 (3) | 0.27 (0.08 to 0.98) |
All causes | 21.8 (687) | 19.8 (618) | 0.91 (0.81 to 1.01) | 18.0 (565) | 13.4 (418) | 0.75 (0.66 to 0.85) |