Home | FMU | AMU | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
n = 4013 | n = 4831 | n = 7733 | ||||||||||
No immersion | Immersion | No immersion | Immersion | No immersion | Immersion | |||||||
n = 2002 | n = 2011 | n = 2216 | n = 2615 | n = 4807 | n = 2926 | |||||||
n | %1 | n | %1 | n | %1 | n | %1 | n | % | n | %1 | |
Maternal age | ||||||||||||
Mean (SD) | 29.7 | (5.3) | 30.6 | (4.7) | 26.2 | (5.6) | 27.6 | (5.7) | 26.5 | (5.6) | 27.5 | (5.6) |
Under 20 | 87 | 4.3 | 30 | 1.5 | 297 | 13.4 | 248 | 9.5 | 566 | 11.8 | 272 | 9.3 |
20–24 | 241 | 12.0 | 159 | 7.9 | 609 | 27.5 | 554 | 21.2 | 1300 | 27.0 | 626 | 21.4 |
25–29 | 607 | 30.3 | 611 | 30.4 | 659 | 29.7 | 783 | 29.9 | 1465 | 30.5 | 901 | 30.8 |
30–34 | 675 | 33.7 | 808 | 40.2 | 474 | 21.4 | 735 | 28.1 | 1048 | 21.8 | 795 | 27.2 |
35–39 | 350 | 17.5 | 362 | 18.0 | 161 | 7.3 | 261 | 10.0 | 391 | 8.1 | 303 | 10.4 |
40+ | 39 | 1.9 | 37 | 1.8 | 12 | 0.5 | 32 | 1.2 | 29 | 0.6 | 22 | 0.8 |
Missing | 3 | 0.1 | 4 | 0.2 | 4 | 0.2 | 2 | 0.1 | 8 | 0.2 | 7 | 0.2 |
Ethnicity | ||||||||||||
White | 1899 | 94.9 | 1898 | 94.4 | 2030 | 91.6 | 2428 | 92.8 | 3876 | 80.6 | 2548 | 87.1 |
Non-white | 102 | 5.1 | 108 | 5.4 | 186 | 8.4 | 186 | 7.1 | 919 | 19.1 | 369 | 12.6 |
Missing | 1 | 0.0 | 5 | 0.2 | 0 | 0.0 | 1 | 0.04 | 12 | 0.3 | 9 | 0.3 |
Understanding English | ||||||||||||
Fluent | 1983 | 99.1 | 2004 | 99.7 | 2111 | 95.3 | 2563 | 98.0 | 4320 | 89.9 | 2755 | 94.2 |
Not fluent | 17 | 0.8 | 4 | 0.2 | 96 | 4.3 | 52 | 2.0 | 471 | 9.8 | 159 | 5.4 |
Missing | 2 | 0.1 | 3 | 0.1 | 9 | 0.4 | 0 | 0.0 | 16 | 0.3 | 12 | 0.4 |
Marital/Partner status | ||||||||||||
Married/Living together | 1881 | 94.0 | 1924 | 95.7 | 1913 | 86.3 | 2380 | 91.0 | 4111 | 85.5 | 2587 | 88.4 |
Single/unsupported by partner | 110 | 5.5 | 75 | 3.7 | 276 | 12.5 | 208 | 8.0 | 638 | 13.3 | 282 | 9.6 |
Missing | 11 | 0.5 | 12 | 0.6 | 27 | 1.2 | 27 | 1.1 | 58 | 1.2 | 57 | 1.9 |
Body mass index (kg/m 2 ) | ||||||||||||
Not recorded | 391 | 19.5 | 371 | 18.4 | 334 | 15.1 | 484 | 18.5 | 810 | 16.8 | 509 | 17.4 |
Less than 18.5 | 32 | 1.6 | 42 | 2.1 | 60 | 2.7 | 51 | 2.0 | 138 | 2.9 | 87 | 3.0 |
18.5–24.9 | 1052 | 52.6 | 1077 | 53.6 | 1159 | 52.3 | 1412 | 54.0 | 2505 | 52.1 | 1615 | 55.2 |
25.0–29.9 | 406 | 20.3 | 403 | 20.0 | 502 | 22.7 | 514 | 19.7 | 1019 | 21.2 | 551 | 18.8 |
30.0–35.0 | 109 | 5.4 | 108 | 5.4 | 157 | 7.1 | 153 | 5.9 | 321 | 6.7 | 158 | 5.4 |
Missing | 12 | 0.6 | 10 | 0.5 | 4 | 0.2 | 1 | 0.0 | 14 | 0.3 | 6 | 0.2 |
Index of Multiple Deprivation (IMD) quintiles | ||||||||||||
1st Least deprived | 412 | 20.6 | 427 | 21.2 | 400 | 18.1 | 606 | 23.2 | 693 | 14.4 | 476 | 16.3 |
2nd | 408 | 20.4 | 432 | 21.5 | 475 | 21.4 | 630 | 24.1 | 733 | 15.2 | 524 | 17.9 |
3rd | 454 | 22.7 | 455 | 22.6 | 464 | 20.9 | 561 | 21.5 | 921 | 19.2 | 628 | 21.5 |
4th | 403 | 20.1 | 426 | 21.2 | 478 | 21.6 | 422 | 16.1 | 1151 | 23.9 | 690 | 23.6 |
5th Most deprived | 314 | 15.7 | 259 | 12.9 | 392 | 17.7 | 389 | 14.9 | 1294 | 26.9 | 602 | 20.6 |
Missing | 11 | 0.5 | 12 | 0.6 | 7 | 0.3 | 7 | 0.3 | 15 | 0.3 | 6 | 0.2 |
Gestation (completed weeks) | ||||||||||||
Mean (SD) | 39.7 | (1.1) | 39.8 | (1.0) | 39.7 | (1.1) | 39.8 | (1.0) | 39.7 | (1.1) | 39.8 | (1.0) |
37 | 53 | 2.6 | 37 | 1.8 | 70 | 3.2 | 68 | 2.6 | 153 | 3.2 | 79 | 2.7 |
38 | 219 | 10.9 | 174 | 8.7 | 209 | 9.4 | 226 | 8.6 | 475 | 9.9 | 272 | 9.3 |
39 | 491 | 24.5 | 430 | 21.4 | 536 | 24.2 | 554 | 21.2 | 1179 | 24.5 | 688 | 23.5 |
40 | 739 | 36.9 | 792 | 39.4 | 833 | 37.6 | 1019 | 39.0 | 1833 | 38.1 | 1129 | 38.6 |
41 | 480 | 24.0 | 546 | 27.2 | 557 | 25.1 | 729 | 27.9 | 1134 | 23.6 | 729 | 24.9 |
42+0 | 20 | 1.0 | 32 | 1.6 | 11 | 0.5 | 19 | 0.7 | 33 | 0.7 | 29 | 1.0 |
Birth weight (grams) | ||||||||||||
mean (SD) | 3452 | (419) | 3497 | (430) | 3391 | (419) | 3441 | (417) | 3380 | (423) | 3447 | (412) |
Less than 2500 g | 15 | 0.7 | 16 | 0.8 | 30 | 1.4 | 21 | 0.8 | 74 | 1.5 | 22 | 0.8 |
2500-2999 g | 259 | 12.9 | 217 | 10.8 | 345 | 15.6 | 325 | 12.4 | 788 | 16.4 | 351 | 12.0 |
3000-3499 g | 810 | 40.5 | 756 | 37.6 | 968 | 43.7 | 1138 | 43.5 | 2090 | 43.5 | 1247 | 42.6 |
3500-3999 g | 702 | 35.1 | 774 | 38.5 | 698 | 31.5 | 873 | 33.4 | 1465 | 30.5 | 1009 | 34.5 |
4000-4499 g | 197 | 9.8 | 210 | 10.4 | 161 | 7.3 | 229 | 8.8 | 350 | 7.3 | 267 | 9.1 |
≥4500 g | 13 | 0.6 | 33 | 1.6 | 14 | 0.6 | 29 | 1.1 | 28 | 0.6 | 20 | 0.7 |
Missing | 6 | 0.3 | 5 | 0.2 | 0 | 0.0 | 0 | 0.0 | 12 | 0.2 | 10 | 0.3 |