Table 1.
Population characteristics
|
Background characteristics |
Non-obese |
Obese |
|
|---|---|---|---|
| (N = 33,818) | (N = 4857) | ||
| |
% |
% |
|
|
Age ≥ 35 years |
19.1 |
23.1 |
|
|
Multiparity |
53.8 |
64.3 |
|
|
Height (cm) |
<155 |
4.4 |
6.5 |
|
155-179 |
94.0 |
92.2 |
|
| ≥180 |
1.6 |
1.2 |
|
|
High weight gain |
33.6 |
50.3 |
|
|
Hypertension |
3.8 |
14.4 |
|
|
Diabetes |
4.3 |
11.2 |
|
|
Nationality |
Belgian |
56.2 |
56.9 |
|
Sub-Saharan Africa |
6.1 |
9.3 |
|
|
Maghreb |
15.0 |
17.7 |
|
|
Eastern Europe |
6.4 |
2.9 |
|
|
Turkey |
3.3 |
3.2 |
|
|
Former-EU15 |
11.4 |
9.0 |
|
|
South-East Asia |
1.7 |
0.8 |
|
|
Education |
≤9th grade |
19.7 |
25.9 |
|
High school |
36.5 |
46.7 |
|
|
College |
43.9 |
27.3 |
|
|
Unemployed |
40.9 |
50.6 |
|
|
Single mother |
5.5 |
6.1 |
|
|
Delivery characteristics | |||
|
Cesarean section |
17.8 |
28.3 |
|
|
Induction |
31.1 |
38.6 |
|
|
Elective CS |
8.7 |
13.6 |
|
|
Timing of induction or elective CS |
<39 weeks |
35.0 |
41.0 |
|
39-40 weeks |
49.0 |
44.7 |
|
| ≥41 weeks |
15.9 |
14.3 |
|
|
Gestational age |
<37 weeks |
7.6 |
8.1 |
|
37-40 weeks |
81.9 |
80.5 |
|
|
≥41 weeks |
10.6 |
11.4 |
|
|
Macrosomia |
6.8 |
11.6 |
|
|
Emergency CS |
9.0 |
14.5 |
|
|
Transfer to NICU |
10.9 |
15.4 |
|
|
1 minute Apgar score < 7 |
6.9 |
9.1 |
|
| Perinatal mortality | 0.6 | 0.7 | |
EU15, Former 15-European Union member countries; CS, cesarean section; NICU, neonatal intensive care unit.
All differences were statistically significant with a p-value <0.001.