Table 1.
Maternal and infant characteristics (n=1659)
| Characteristic | |
|---|---|
|
Infant |
|
|
Male (%) |
48.1 |
|
Birth weight in g (mean ± SD) |
3594 ± 505 |
|
Gestational age at birth in wk (mean ± SD) |
40.0 ± 1,2 |
|
Small-for-gestational-age (%) |
12.4 |
|
Maternal |
|
|
Interpregnancy interval (%) |
|
| < 6 mo |
3.6 |
| 6-11 mo |
16.7 |
| 12-17 mo |
16.8 |
| 18-23 mo |
13.5 |
| ≥ 24 mo |
49.4 |
|
Age (%) |
|
| < 25 y |
5.7 |
| 25-34 y |
61.2 |
| ≥ 35 y |
33.1 |
|
Parity (%) |
|
| 1 |
74.2 |
| 2 |
18.9 |
| ≥3 |
6.9 |
|
Height in cm (mean ± SD) |
168.5 ± 7.2 |
|
Prepregnancy BMI in kg/m2 (mean ± SD) |
23.4 ± 4.1 |
|
Unintended pregnancy (%) |
7.2 |
|
Non-spontaneous pregnancy (%) |
1.9 |
|
Time to pregnancy (%) |
|
| <3 mo |
64.9 |
| 3-12 mo |
26.4 |
| ≥ 12 mo |
8.7 |
|
Started prenatal care (%) |
|
| < 18 wk |
92.1 |
| 18-23 wk |
6.0 |
| ≥ 24 wk |
1.9 |
|
Alcohol consumption (%) |
|
| None |
41.2 |
| Yes, but not since pregnancy |
32.5 |
| Yes, also during pregnancy |
26.3 |
|
Smoking (%) |
|
| None |
81.3 |
| Yes, but not since pregnancy |
10.2 |
| Yes, also during pregnancy |
8.6 |
|
Psychosocial stressors (%) |
|
| 0 |
73.4 |
| 1 |
16.5 |
| ≥2 |
10.1 |
|
Cohabitant status (% living alone) |
9.2 |
|
Education (%) |
|
| <6 y |
22.3 |
| 6-10 y |
38.9 |
| ≥ 11 y |
38.8 |
|
Country of birth (%) |
|
| Netherlands |
64.0 |
| Surinam |
6.1 |
| Turkey |
4.5 |
| Morocco |
7.5 |
| Other non-Western country |
11.6 |
| Other Western country |
6.0 |
|
Country of birth of the mother’s mother (%) |
|
| Netherlands |
58.4 |
| Surinam |
8.4 |
| Turkey |
5.1 |
| Morocco |
8.3 |
| Other | 19.7 |