Table 3.
Results of the multiple logistic regression analysis on the risk factors for gestational diabetes in women with dichorionic twin pregnancies †
| Adjusted odds ratio | 95% confidence interval | P | |
|---|---|---|---|
| Maternal age >34 years | 2.52 | 1.25–5.07 | 0.010 |
| Pre‐pregnancy body mass index >24.9 kg/m2 | 2.83 | 1.47–5.46 | 0.002 |
| Primiparity | 1.59 | 0.77–3.26 | 0.208 |
| Prior induced or spontaneous abortions | 0.78 | 0.41–1.51 | 0.465 |
| Prior fetal death | 0.88 | 0.04–19.10 | 0.937 |
| Prior preterm birth | 6.40 | 0.26–159.01 | 0.257 |
| Conception by reproductive technology | 1.10 | 0.59–2.05 | 0.764 |
| Genetic amniocentesis | 1.29 | 0.70–2.38 | 0.415 |
| Uterine fibroids | 1.86 | 0.35–9.78 | 0.463 |
| Hyperthyroidism | 2.90 | 0.29–28.93 | 0.363 |
| Group B streptococcal colonization | 3.16 | 0.81–12.36 | 0.099 |
†
Cigarette smoking during pregnancy, chronic hypertension and hypothyroidism were not quantifiable, as none of the 57 women with gestational diabetes mellitus had these conditions.