Table 1.
Characteristics of the 6920 primiparous women.
| Non-users of antidepressants n = 6 232 | Users of antidepressantsan = 688 | |
|---|---|---|
| Age (years), mean (SD) | 28.3 (5.1) | 27.9 (5.5) |
| Cohabiting, % | 80.2 | 72.0 |
| Smokersb, % | 17.1 | 31.7 |
| Years of schooling, mean (SD) | 13.4 (2.7) | 12.6 (2.7) |
| Height (cm), mean (SD) | 166 (6) | 165 (6) |
| Weight (kg), mean (SD) | 65.6 (13.4) | 68.5 (14.6) |
| Pre-pregnancy body mass index (kg/m2), mean (SD) | 23.8 (4.5) | 25.0 (5.0) |
| Pre-pregnancy body mass index kg/m2, % | ||
| <18.5 | 4.1 | 2.9 |
| 18.5–24.9 | 67.0 | 56.3 |
| 25.0–29.9 | 19.1 | 24.2 |
| ≥30.0 | 9.8 | 16.6 |
| Previous pregnanciesc, % | ||
| None | 80.9 | 75.3 |
| 1 | 13.7 | 15.3 |
| ≥2 | 5.5 | 9.4 |
| Fertility treatment, % | 8.3 | 5.7 |
| Gestational diabetes mellitus, % | 15.6 | 18.3 |
| Hospitalization due to hypertension, % | 5.8 | 5.4 |
| Hospitalization due to vaginal bleeding, % | 0.4 | 0.0 |
| Induction of labour, % | 25.0 | 27.9 |
| Sections, % | 20.3 | 24.7 |
| Stillbirth after 22 weeks of gestation, % | 0.3 | 0.0 |
| Preterm birth (birth before 37 + 0 weeks of gestation), % | 5.2 | 5.5 |
| Moderately preterm birth (birth 32 + 0 to 36 + 6 weeks of gestation), % | 4.5 | 4.9 |
| Very preterm birth (birth 22 + 0 to 31 + 6 weeks of gestation), % | 0.7 | 0.6 |
a
Women were considered as antidepressant users, if they had any purchases of antidepressants 12 months or less before becoming pregnant and/or during pregnancy.
b
Including those who stopped during pregnancy.
c
Including ectopic pregnancies, induced abortions, or miscarries.