Sociodemographic characteristics of the participants (n=3482)
| Variable | n | % |
|---|---|---|
| Parity | ||
| 0 | 1700 | 48.8 |
| 1 | 1364 | 39.2 |
| ≥2 | 418 | 12.0 |
| Education | ||
| Primary/secondary school (≤12 years) | 1236 | 35.5 |
| College/university (<12 years) | 2108 | 60.5 |
| Unknown | 92 | 2.6 |
| Missing | 46 | 1.3 |
| Marital status | ||
| Married/cohabitant | 3353 | 96.3 |
| Single | 105 | 3.0 |
| Unknown | 24 | 0.7 |
| Smoking | ||
| Non-smoker | 3113 | 89.4 |
| Smoker | 255 | 7.3 |
| Missing | 114 | 3.3 |
| Body mass index | ||
| <18.5 | 87 | 2.5 |
| 18.5–24.9 | 1651 | 47.4 |
| 25.0–29.9 | 583 | 16.7 |
| 30–34.9 | 259 | 7.4 |
| 35+ | 108 | 3.1 |
| Missing | 794 | 22.8 |