Table 5.

Results of the multiple logistic regression analysis on the association between gestational diabetes and admission to the neonatal intensive care unit in women with dichorionic twin pregnancies ^†

	Adjusted odds ratio	95% confidence interval	P
Maternal age >34 years	1.09	0.79–1.51	0.612
Pre‐pregnancy body mass index >24.9 kg/m2	1.01	0.66–1.54	0.965
Pre‐pregnancy body mass index <18.5 kg/m2	1.34	0.81–2.20	0.254
Primiparity	1.29	0.90–1.85	0.161
Prior induced or spontaneous abortions	0.93	0.78–1.11	0.433
Prior fetal death	2.16	0.53–8.78	0.281
Conception by reproductive technology	1.00	0.99–1.01	0.714
Genetic amniocentesis	1.67	1.22–2.28	0.001
Cigarette smoking during pregnancy	26.91	2.96–244.85	0.003
Uterine fibroids	0.89	0.29–2.81	0.848
Group B streptococcal colonization	0.36	0.11–1.20	0.097
Premature rupture of membranes	3.11	1.99–4.86	<0.001
Gestational diabetes mellitus	1.70	1.06–2.72	0.028
Pre‐eclampsia	2.70	1.50–4.84	0.001
Hyperthyroidism	1.40	0.33–5.99	0.654
Hypothyroidism	1.83	0.35–9.62	0.478

^†History of preterm birth and chronic hypertension were not quantifiable, as none of the 132 women with newborns admitted to the neonatal intensive care unit had these conditions.