Perinatal outcomes in twin late preterm pregnancies: results from an Italian area-based, prospective cohort study

Table 4 Multivariate logistic regression models investigating the role of gestational age, chorionicity, order and circumstances at delivery on neonatal outcomes

	Composite adverse neonatal outcomes
	AOR (95%CI)	p
Gestational age
34	20.2 (6.9–58.3)	< 0.01
35	3.3 (1.9–5.6)	< 0.01
36	§
Delivery indications
Spontaneous PTL	§
pPROM	0.98 (0.46–2)	0.9
Indicated	1.36 (0.7–2.6)	0.9
No indicated	1.02 (0.5–2.1)	0.3

The following variables were tested as potential confounders: maternal age, parity, previous preterm birth, race, education, BMI, excessive wait gain, smoking, utilization of assisted reproductive technologies, treatment with LDA, progesterone, or LMWH, antenatal corticosteroids
The area under receiver operating characteristic (ROC) curve was respectively 0.67 for composite adverse neonatal outcomes, 0.67 for neonatal resuscitation, 0.66 for metabolic complications, and 0.69 for respiratory support
AOR adjusted OR

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