Table 1 Baseline and social characteristics
Mothers of Rotterdam | The Netherlands | Rotterdam | |
|---|---|---|---|
Total number of births in study period | 346 | 813,755 | 34,009 |
Gestational age at application (median, IQR) | 23.3 (15.9–30.1) | NA | NA |
Maternal age | |||
Mean (sd) | 27.73 (6.14) | 30.78 (4.74) | 30.68 (5.20) |
< 20 | 42 (12.1) | 12,539 (1.5) | 893 (2.6) |
21–25 | 81 (23.4) | 94,069 (11.6) | 4,857 (14.3) |
26–30 | 116 (33.5) | 283,619 (34.8) | 10,536 (31.0) |
31–35 | 66 (19.1) | 292,665 (36.0) | 11,537 (33.9) |
> 35 | 41 (11.8) | 130,863 (16.1) | 6,186 (18.2) |
Parity | |||
Nulliparous | 185 (53.5) | 359,462 (44.2) | 15,681 (46.1) |
Primi-/Multiparous | 161 (46.5) | 454,293 (55.8) | 18,328 (53.9) |
Neighbourhood | |||
Non-deprived | 169 (48.8) | 75,8415 (93.2) | 21,445 (63.1) |
Deprived | 177 (51.2) | 54,881 (6.7) | 12,564 (36.9) |
Missing | 0 (0.0) | 459 (0.1) | 0 (0.0) |
Ethnicity | |||
Western | 71 (20.5) | 72,2324 (88.8) | 25,019 (73.5) |
Non-Western | 179 (51.7) | 81,145 (9.9) | 8,663 (25.5) |
Unknown | 96 (27.8) | 10,286 (1.3) | 327 (1.0) |
Marital statusa | |||
Married | 62 (17.9) | 1,652,141 (37.3) | Data not available |
Divorced | 2 (0.6) | 348,577 (7.8) | |
Single | 73 (21.0) | - | |
Otherb | 130 (37.6) | 2,426,251 (54.8) | |
Unknown | 79 (22.9) | 0 (0.0) | |