Table 2.
Obstetric outcomes.
| Vit D <10 ng/mL (N = 288) |
Vit D ≥10 ng/mL (N = 791) |
p-value | Adjusted odds ratio (95% CI)a | p-value | |
|---|---|---|---|---|---|
| GA at delivery (wk) | 38.7 ± 1.9 | 38.7 ± 1.6 | 0.908 | ||
| Cesarean delivery | 137 (47.6) | 406 (51.3) | 0.275 | ||
| Preterm birth | |||||
| 23–27 + 6 week | 2 (0.7) | 2 (0.3) | 0.290 | ||
| 23–31 + 6 week | 4 (1.4) | 10 (1.3) | 1.000 | 6.73 (1.03–43.98) | 0.047 |
| 23–33 + 6 week | 7 (2.4) | 13 (1.6) | 0.396 | 4.16 (0.76–22.75) | 0.100 |
| 23–36 + 6 week | 21 (7.3) | 35 (4.4) | 0.060 | 7.78 (2.23–27.12) | 0.001 b |
| Pregnancies with | |||||
| Preeclampsia | 3 (3.3) | 10 (2.6) | 0.722 | 2.98 (0.69–12.84) | 0.142 |
| GDM | 9 (9.8) | 44 (11.4) | 0.652 | 0.65 (0.24–1.73) | 0.384 |
| Placenta previa | 1 (1.1) | 2 (0.5) | 0.475 | 11.34 (0.46–278.82) | 0.137 |
| Cerclage | 3 (3.3) | 15 (3.9) | 1.000 | 1.26 (0.25–6.31) | 0.778 |
| Antenatal admission due to preterm labor | 8 (8.7) | 27 (7.0) | 0.578 | 1.85 (0.67–5.10) | 0.236 |
Data are presented in mean ± SD or number of cases (percentage).
Vit D, vitamin D; GA, gestational age; GDM, gestational diabetes mellitus; a All outcomes were adjusted for maternal age, body mass index, prior preterm birth, nulliparity, method of delivery and method of conception.
b statistically significant difference (p < 0.05).