Table 2.
Population characteristics of singleton pregnancies between 2003 and 2017 by neighbourhood SES trajectory.
| Neighbourhood SES trajectory |
||||||||
|---|---|---|---|---|---|---|---|---|
| Total | Stable High | Stable Medium | Stable Low | Improving to High | Improving to Medium | Declining to Medium | Declining to Low | |
| N (% of total) | 2 334 036 | 359 525 (15·4) | 1 054 271 (45·2) | 502 546 (21·5) | 91 684 (3·9) | 103 483 (4·4) | 108 282 (4·6) | 114 245 (4·89) |
| Characteristics | ||||||||
| Maternal age, mean (SD) | 30·6(4·8) | 31·8 (4·4) | 30·5 (4·7) | 29·6 (5·3) | 31·5 (4·5) | 30·4 (4·9) | 31·0 (4·6) | 30·0 (4·9) |
| Primiparous, N(%) | 1 053 956 (45·2) | 155 847 (43·4) | 473 158 (44·9) | 231 276 (46·0) | 40 771 (46·1) | 50 823 (49·1) | 47 818 (44·2) | 52 463 (46·1) |
| Dutch | 1 707 011 (73·1) | 280 970 (78·2) | 853 862 (81·0) | 257 874 (51·3) | 72 390 (79·0) | 74 170 (71·7) | 86 226 (79·6) | 81 519 (71·4) |
| Moroccan | 99 679 (4·3) | 6 850 (1·9) | 24 708 (2·3) | 55 031 (11·0) | 1 623 (1·8) | 4 066 (3·9) | 2 429 (2·2) | 4 972 (4·4) |
| Turkish | 80 503 (3·4) | 5 743 (1·6) | 18 856 (1·8) | 45 084 (9·0) | 1 149 (1·3) | 3 422 (3·3) | 1 625 (1·5) | 4 624 (4·0) |
| Suriname | 59 851 (2·6) | 8 312 (2·3) | 14 644 (1·4) | 26 994 (5·4) | 1 997 (2·2) | 2 727 (2·6) | 2 200 (2·0) | 2 977 (2·6) |
| Antillean | 27 572 (1·2) | 2 680 (0·7) | 7 587 (0·7) | 12 933 (2·6) | 674 (0·7) | 1 300 (1·3) | 839 (0·8) | 1 559 (1·4) |
| Other non-western | 141 916 (6·1) | 17 205 (4·8) | 46 394 (4·4) | 54 610 (10·9) | 4 087 (4·5) | 6 796 (6·6) | 4 782 (4·4) | 8 042 (7·0) |
| Other western | 217 504 (9·3) | 37 765 (10·5) | 88 220 (8·4) | 50 020 (10·0) | 9 764 (10·6) | 11 002 (10·6) | 10 181 (9·4) | 10 552 (9·2) |
| Second generation | 227286 (9·8) | 34 111 (9·5) | 76 520 (7·2) | 77 695 (15·4) | 8 057 (8·8) | 10 542 (10·2) | 8 920 (8·2) | 11 441 (10·0) |
| Household income €, median (IQR) | 22 140 (14 279) | 26 504 (16 489) | 22 564 (13 538) | 18 068 (12 421) | 26 019 (16 055) | 22 057 (14 459) | 22 421 (12 791) | 20 478 (12 824) |
| Birth outcomes | ||||||||
| Preterm birth, N(%) | 131 521 (5·6) | 18 503 (5·1) | 58 623 (5·6) | 30 989 (6·2) | 4 807 (5·2) | 5 890 (5·7) | 5 983 (5·5) | 6 726 (5·9) |
| SGA, N(%) | 261 154 (11·2) | 35 146 (9·8) | 110 909 (10·5) | 69 518 (13·8) | 9 065 (9·9) | 11 952 (11·5) | 11 093 (10·2) | 13 471 (11·8) |
Time points of covariate assessment: maternal age assessed at delivery, parity is registered during the antenatal care intake, yearly household income from the year of birth of the child, and ethnicity as registered in CBS records (remains invariant across time).