|
Maternal age, yearsb
|
29.3 ± 5.4
|
29.6 ± 5.6
|
29.4 ± 5.5
|
|
Gestational age at entry, weeksc
|
14.0 (11.9 to 17.0)
|
14.1 (11.9 to 17.0)
|
14.1 (11.9 to 17.0)
|
|
Body mass index, kg/m2c
|
31.0 (28.1 to 35.9)
|
31.1 (27.7 to 35.6)
|
31.1 (27.9 to 35.8)
|
|
Body mass index categoryd
| | | |
|
25.0 to 29.9
|
458 (41.4)
|
468 (42.7)
|
926 (42.1)
|
|
30.0 to 34.9
|
326 (29.5)
|
318 (29.0)
|
644 (29.2)
|
|
35.0 to 39.9
|
202 (18.3)
|
183 (16.7)
|
385 (17.5)
|
|
≥40.0
|
119 (10.8)
|
128 (11.7)
|
247 (11.2)
|
|
Public patientc
|
1081 (97.8)
|
1067 (97.3)
|
2148 (97.5)
|
|
Weight, kgb
|
88.6 ± 17.3
|
88.2 ± 17.6
|
88.4 ± 17.4
|
|
Height, cmb
|
164.9 ± 16.6
|
164.8 ± 16.5
|
164.8 ± 16.6
|
|
Racec
| | | |
|
Caucasian
|
995 (90.0)
|
998 (91.0)
|
1993 (90.5)
|
|
Asian
|
26 (2.4)
|
34 (3.1)
|
60 (2.7)
|
|
Indian
|
40 (3.6)
|
35 (3.2)
|
75 (3.4)
|
|
Other
|
44 (4.0)
|
30 (2.7)
|
74 (3.4)
|
|
Smokerc
|
154 (13.9)
|
126 (11.5)
|
280 (12.7)
|
|
Nulliparousc
|
457 (41.4)
|
441 (40.2)
|
898 (40.8)
|
|
Previous preterm birthc
|
57 (5.2)
|
59 (5.4)
|
116 (5.3)
|
|
Previous pre-eclampsiac
|
46 (4.2)
|
51 (4.6)
|
97 (4.4)
|
|
Previous stillbirthc
|
13 (1.2)
|
6 (0.5)
|
19 (0.9)
|
|
Previous neonatal deathc
|
11 (1.0)
|
7 (0.6)
|
18 (0.8)
|
|
Previous caesarean sectionc
|
197 (17.8)
|
214 (19.5)
|
411 (18.7)
|
|
Family history of diabetesc
|
288 (26.1)
|
290 (26.4)
|
578 (26.2)
|
|
Family history of hypertensionc
|
389 (35.2)
|
369 (33.6)
|
758 (34.4)
|
|
Family history of heart diseasec
|
187 (16.9)
|
179 (16.3)
|
366 (16.6)
|
|
Index of socio-economic disadvantagee
| | | |
|
Unknown
|
2 (0.2)
|
1 (0.1)
|
3 (0.1)
|
|
Quintile 1, (most disadvantaged)
|
340 (30.8)
|
321 (29.3)
|
661 (30.0)
|
|
Quintile 2
|
271 (24.5)
|
264 (24.1)
|
535 (24.3)
|
|
Quintile 3
|
173 (15.7)
|
174 (15.9)
|
347 (15.8)
|
|
Quintile 4
|
150 (13.6)
|
178 (16.2)
|
328 (14.9)
|
|
Quintile 5, (least disadvantaged)
|
169 (15.3)
|
159 (14.5)
|
328 (14.9)
|
