Table 3.

Hypoxic and traumatic neonatal morbidity and growth

	SGA (N=4,983)			AGA N=53,200)	LGA (N=5,253)
	n (%)	uRR* (95% CI)	aRR† (95% CI)	n (%)	n (%)	uRR* (95% CI)	aRR† (95% CI)
Hypoxic composite neonatal morbidity	55 (1.1)	1.57 (1.18-2.08)‡	1.44 (1.07-1.93)§	374 (0.7)	31 (0.6)	0.84 (0.58-1.21)	0.84 (0.58-1.22)
Traumatic composite neonatal morbidity	65 (1.3)	1.33 (1.03-1.72)║	1.28 (0.98-1.67)	523 (1.0)	102 (1.9)	1.98 (1.60-2.44)¶	1.88 (1.51-2.34)¶
Bronchopulmonary dysplasia H	0 (0.0)			2 (0.0)	1 (0.0)
Persistent pulmonary hypertension of the newborn H	11 (0.2)			36 (0.1)	9 (0.2)
Proven newborn sepsis H	6 (0.1)			44 (0.1)	5 (0.1)
Necrotizing enterocolitis stage II or III H	0 (0.0)			3 (0.0)	0 (0.0)
Intraventricular hemorrhage grade (IVH) III or IV H	0 (0.0)			1 (0.0)	0 (0.0)
Apgar score < 5 at 5 min H, T	19 (0.4)			93 (0.2)	6 (0.1)
Ventilator support within 24 hrs. H, T	25 (0.5)			191 (0.4)	16 (0.3)
Seizure H, T	7 (0.1)			39 (0.1)	3 (0.1)
Cardiopulmonary resuscitation within first 24 hrs. H, T	7 (0.1)			30 (0.1)	2 (0.0)
Hypoxic ischemic encephalopathy H, T	20 (0.4)			92 (0.2)	9 (0.2)
Death before discharge H, T	3 (0.1)			7 (0.0)	2 (0.0)
Fracture (skull, depressed skull, clavicle, other) T	6 (0.1)			135 (0.3)	54 (1.0)
Intracranial hemorrhage (other than IVH) T	7 (0.1)			70 (0.1)	4 (0.1)
Brachial plexus injury T	1 (0.0)			24 (0.1)	19 (0.4)
Facial nerve palsy T	3 (0.1)			5 (0.0)	2 (0.0)

 Data as n (%)

SGA, small for gestational age; AGA, appropriate gestational age; LGA, large for gestational age; aRR, adjusted relative risk; CI, confidence interval

^H—a component of hypoxic CNM;

^T—a component of traumatic CNM

^*Compared with AGA and unadjusted

^†Compared with AGA and adjusted for insurance status, nulliparity, body mass index, and male fetal sex; number with complete data in the multivariable model is 61905

^‡P=.002

^§P=.02

^║P=.03

^¶P<.001