Table 3. Multivariate logistic regression analysis for GDM in second pregnancies.
| Adjusted ORa | 95% CI | |
|---|---|---|
| Advanced age (≥35 years) | 1.4 | 1.3–1.5 |
| Preeclampsia only in the first pregnancy | 1.2 | 1.1–1.3 |
| GDM with insulin treatment only in the first pregnancy | 13.7 | 11.2–16.8 |
| GDM without insulin treatment only in the first pregnancy | 3.0 | 2.8–3.1 |
| Preeclampsia and GDM in the first pregnancy with insulin treatment in the first pregnancy | 79.6 | 10.3–613.9 |
| Preeclampsia and GDM without insulin treatment in the first pregnancy | 4.5 | 3.0–6.8 |
| Multiple pregnancies in the first pregnancy | 1.0 | 0.8–1.2 |
| Multiple pregnancies in the second pregnancy | 1.3 | 1.3–1.5 |
| Prior cesarean section | 1.2 | 1.1–1.2 |
| Interval between two pregnancies | ||
| 1 year | 1 | |
| 2 years | 1.4 | 1.3–1.5 |
| 3 years | 2.1 | 2.0–2.3 |
| 4 years | 3.0 | 2.8–3.2 |
| 5 years | 3.5 | 3.3–3.8 |
aThe OR was adjusted for variables in the table.