Table 4.
Whole number weight that has been assigned to the adverse level of each separate risk factor for the construction of individual weighted risk scores
| Risk factor | Whole number weight |
|---|---|
| Age | |
| <20 years | 1 |
| 20–35 years | 0 |
| ≥35 years | 1 |
| Ethnicity | |
| Dutch or western | 0 |
| Moroccan | 0 |
| Non-western Afro-African | 2 |
| Antillean or Surinam Afro-African single | 1 |
| Antillean or Surinam Afro-African other | 2 |
| Non-western other | 1 |
| Educational level | |
| Primary | 1 |
| Secondary or higher | 0 |
| Net income | |
| Euro <1,200 | 1 |
| Euro 1,200–2,200 | 0 |
| Euro ≥2,200 | 0 |
| Occupation | |
| Non-working | 1 |
| <20 h/week | 0 |
| 20–36 h/week | 0 |
| ≥36 h/week | 1 |
| Marital status | |
| Single | 1 |
| Married/living together | 0 |
| Consanguinity | |
| Yes | 0 |
| No | 0 |
| Moved during pregnancy | |
| Yes | 1 |
| No | 0 |
| BMI intake | |
| <20 | 1 |
| 20–30 | 0 |
| ≥30 | 1 |
| Smoking habits | |
| Yes, stopped after pregnancy recognition | 1 |
| Yes, continued throughout pregnancy | 2 |
| No | 0 |
| Alcohol consumption | |
| Yes but stopped after pregnancy recognition | 0 |
| Yes, continued throughout pregnancy | 0 |
| No | 0 |
| Recreational drug use | |
| Yes, during the periconception period | 1 |
| Yes, continued throughout pregnancy | 2 |
| No | 0 |
| Parity | |
| 0 | 1 |
| 1–3 | 0 |
| ≥3 | 1 |
| Pregnancy planning | |
| Yes | 0 |
| No | 1 |
| Folic acid use | |
| Yes | 0 |
| No | 1 |
| Complications previous pregnancy | |
| Yes | 1 |
| No | 0 |
| Missing | 0 |
| Gestational age at booking | |
| <14 weeks | 0 |
| ≥14 weeks | 0 |
| Psychopathology | |
| Yes | 1 |
| No | 0 |
| Comorbidity | |
| Yes | 1 |
| No | 0 |
| Sexual transmittable diseases | |
| Yes | 1 |
| No | 0 |