Table 1.
Characteristics of the infants in the data set
| Neonatal deaths | Infant deaths | Preterm births | Birth weight | ||||||
| N | Per 1000* | N | Per 1000* | N | % | Mean, kg | SD | ||
| Infant ethnic group, n (%) | |||||||||
| White British | 3 009 231 (64.9) | 5554 | 1.8 | 8634 | 2.9 | 166 663 | 5.5 | 3.40 | 0.55 |
| White (other) | 340 526 (7.4) | 555 | 1.6 | 838 | 2.5 | 15 747 | 4.6 | 3.41 | 0.51 |
| Indian | 132 651 (2.9) | 317 | 2.4 | 473 | 3.6 | 7984 | 6.0 | 3.10 | 0.51 |
| Pakistani | 180 269 (3.9) | 728 | 4.0 | 1247 | 6.9 | 10 813 | 6.0 | 3.14 | 0.52 |
| Bangladeshi | 62 948 (1.4) | 170 | 2.7 | 277 | 4.4 | 3964 | 6.3 | 3.08 | 0.50 |
| Black Caribbean | 47 505 (1.0) | 190 | 4.0 | 285 | 6.0 | 3900 | 8.2 | 3.17 | 0.58 |
| Black African | 154 076 (3.3) | 520 | 3.4 | 797 | 5.2 | 9534 | 6.2 | 3.30 | 0.57 |
| Mixed or other | 419 970 (9.1) | 901 | 2.1 | 1431 | 3.4 | 23 678 | 5.6 | 3.29 | 0.53 |
| Not stated | 287 756 (6.2) | 703 | 2.4 | 1019 | 3.5 | 16 232 | 5.6 | 3.36 | 0.55 |
| Sex of infant, n (%) | |||||||||
| Male | 2 377 766 (51.3) | 5431 | 2.3 | 8464 | 3.6 | 140 994 | 5.9 | 3.42 | 0.56 |
| Female | 2 257 166 (48.7) | 4207 | 1.9 | 6536 | 2.9 | 117 521 | 5.2 | 3.30 | 0.53 |
| Year of birth, n (%) | |||||||||
| 2006 | 631 705 (13.6) | 1521 | 2.4 | 2303 | 3.6 | 37 858 | 6.0 | 3.35 | 0.56 |
| 2007 | 646 902 (14.0) | 1493 | 2.3 | 2383 | 3.7 | 37 184 | 5.8 | 3.36 | 0.55 |
| 2008 | 663 918 (14.3) | 1427 | 2.1 | 2241 | 3.4 | 37 124 | 5.6 | 3.36 | 0.55 |
| 2009 | 659 807 (14.2) | 1371 | 2.1 | 2130 | 3.2 | 36 687 | 5.6 | 3.36 | 0.55 |
| 2010 | 671 265 (14.5) | 1314 | 2.0 | 2042 | 3.0 | 36 157 | 5.4 | 3.37 | 0.54 |
| 2011 | 675 075 (14.6) | 1323 | 2.0 | 2033 | 3.0 | 36 472 | 5.4 | 3.37 | 0.54 |
| 2012 | 686 260 (14.8) | 1189 | 1.7 | 1869 | 2.7 | 37 033 | 5.4 | 3.37 | 0.54 |
| Mother’s age in years, mean (SD) | 29.0 (6.0) | ||||||||
| Mother’s country or region of birth†, n (%) | |||||||||
| UK | 3 507 324 (75.7) | 7033 | 2.0 | 10 955 | 3.1 | 199 357 | 5.7 | 3.38 | 0.55 |
| Country or region of ethnic origin | 622 475 (13.4) | 1599 | 2.6 | 2516 | 4.0 | 33 728 | 5.4 | 3.29 | 0.54 |
| Elsewhere | 505 133 (10.9) | 1006 | 2.0 | 1530 | 3.0 | 25 430 | 5.0 | 3.33 | 0.53 |
| Birth registration type, n (%) | |||||||||
| Married parents | 2 499 063 (53.9) | 4760 | 1.9 | 7210 | 2.9 | 124 912 | 5.0 | 3.38 | 0.54 |
| Joint registration, same address | 1 398 935 (30.2) | 2945 | 2.1 | 4433 | 3.2 | 79 657 | 5.7 | 3.37 | 0.55 |
| Joint registration, different addresses | 450 500 (9.7) | 1216 | 2.7 | 2001 | 4.4 | 32 143 | 7.1 | 3.28 | 0.57 |
| Sole registrant | 286 434 (6.2) | 717 | 2.5 | 1357 | 4.7 | 21 803 | 7.6 | 3.25 | 0.57 |
| Index of multiple deprivation decile, n (%) | |||||||||
| 1 – most deprived | 662 767 (14.3) | 1868 | 2.8 | 3098 | 4.7 | 44 384 | 6.7 | 3.27 | 0.56 |
| 2 | 598 259 (12.9) | 1558 | 2.6 | 2468 | 4.1 | 37 615 | 6.3 | 3.30 | 0.56 |
| 3 | 541 795 (11.7) | 1340 | 2.5 | 2066 | 3.8 | 32 461 | 6.0 | 3.33 | 0.55 |
| 4 | 489 932 (10.6) | 1007 | 2.1 | 1599 | 3.3 | 27 819 | 5.7 | 3.35 | 0.55 |
| 5 | 439 270 (9.5) | 823 | 1.9 | 1264 | 2.9 | 23 447 | 5.3 | 3.38 | 0.54 |
| 6 | 422 908 (9.1) | 770 | 1.8 | 1144 | 2.7 | 21 862 | 5.2 | 3.40 | 0.54 |
| 7 | 388 665 (8.4) | 629 | 1.6 | 941 | 2.4 | 19 586 | 5.0 | 3.41 | 0.53 |
| 8 | 382 585 (8.3) | 607 | 1.6 | 893 | 2.3 | 18 540 | 4.9 | 3.42 | 0.53 |
| 9 | 366 851 (7.9) | 550 | 1.5 | 822 | 2.2 | 17 421 | 4.8 | 3.43 | 0.52 |
| 10 – least deprived | 341 900 (7.4) | 486 | 1.4 | 706 | 2.1 | 15 380 | 4.5 | 3.45 | 0.52 |
| Total | 4 634 932 | 9638 | 2.1 | 15 001 | 3.2 | 258 515 | 5.6 | 3.36 | 0.55 |
*Mortality rates per 1000 live births.
†Re-coded from mother’s actual country of birth and classified according to mother’s ethnic group – see ‘Methods’.