Table 4.
Coefficients in the Extended model.
| Development (1997–2012), αdev and βdev | Validation (2013–2018), αval and βval | Recalibrated model* | |
|---|---|---|---|
| Intercept | −2.74 | −4.22 | −2.82 |
| Mothers age at birth | −0.33 | −0.30 | −0.35 |
| Age2 | 0.01 | 0.01 | 0.01 |
| Age3 | −0.00 | −0.00 | −0.00 |
| Cohabitation | −0.03 | 0.12 | −0.04 |
| Education | |||
| Mandatory | 0.33 | 0.38 | 0.35 |
| Short | 0.14 | 0.16 | 0.15 |
| Medium | −0.13 | 0.00 | −0.13 |
| High | Ref | Ref | Ref |
| Previous psychiatric history | |||
| None | Ref | Ref | Ref |
| Within 3 years before birth | 2.65 | 3.12 | 2.83 |
| 3–10 years before birth | 2.46 | 2.55 | 2.63 |
| 10+ years before birth | 1.89 | 2.14 | 2.02 |
| Postpartum hemorrhage (%) | 0.33 | 0.02 | 0.35 |
| Gestational diabetes (%) | 0.28 | 0.23 | 0.30 |
| Gestational hypertension (%) | 0.19 | 0.05 | 0.20 |
| Preeclampsia (%) | 0.14 | 0.16 | 0.15 |
| Eclampsia (%) | 0.34 | −7.33 | 0.36 |
| Previous stillbirths (%) | −0.30 | −0.06 | −0.32 |
| Previous abortion (%) | −0.01 | −0.12 | −0.01 |
| Acute c-section (%) | 0.19 | 0.03 | 0.20 |
| Preterm birth (%) | 0.30 | 0.49 | 0.32 |
| Hyperemesis gravidarum (%) | 0.53 | 0.63 | 0.56 |
*To calculate the coefficients in the recalibrated model, the estimates αnew and βoverall has to be added and multiplied, respectively, to the original model (here the Extended model).