Table 1.
Characteristics of Study Participants (n = 782)
| distributiona | ||
|---|---|---|
| maternal age (years) | 31 (28, 34) | |
| maternal ethnicity | ||
| Dutch | 57.7 | |
| other western | 12.7 | |
| nonwestern | 29.6 | |
| maternal IQ | 100 (90, 107) | |
| missing, n | 19 | |
| maternal education | ||
| low | 14.8 | |
| intermediate | 30.2 | |
| high | 55.0 | |
| missing, n | 24 | |
| household income | ||
| <1200€/month | 12.6 | |
| 1200–2000€/month | 16.5 | |
| >2000€/month | 70.9 | |
| missing, n | 101 | |
| maternal psychopathology | 0.13 (0.08, 0.33) | |
| missing, n | 94 | |
| maternal body mass index (kg/m2) | 22 (21, 25) | |
| missing, n | 97 | |
| maternal parity | ||
| 0 | 62.3 | |
| 1 | 26.6 | |
| ≥2 | 11.1 | |
| missing, n | 4 | |
| maternal marital status | ||
| married/living with partner | 89.8 | |
| no partner | 10.2 | |
| missing, n | 29 | |
| maternal smoking during pregnancy | ||
| no smoking during pregnancy | 77.2 | |
| until pregnancy recognized | 8.9 | |
| continued during pregnancy | 13.9 | |
| missing, n | 63 | |
| maternal alcohol consumption during pregnancy | ||
| no consumption during pregnancy | 36.7 | |
| until pregnancy recognized | 17.5 | |
| continued occasionally | 39.3 | |
| continued frequently | 6.5 | |
| missing, n | 40 | |
| child age at assessment | 5.9 (5.8, 6.0) | |
| child sex (female) | 49.1 |
a
Median (25th percentile, 75th percentile) for continuous variables and percentage for categorical variables.