Table 4.

Incidence of Neonatal Morbidity Composite Score Components by Hypertension Classification Group

Outcome	Normal Blood Pressure	Elevated Blood Pressure	Stage 1 Hypertensive	Stage 2 Hypertensive	P value*
Neonatal Morbidity Composite	3,087 (22.6)	650 (25.7)	237 (24.0)	446 (44.4)	<0.001
IUFD after 20 weeks gestation	4 (0.03)	2 (0.08)	0 (0.00)	1 (0.10)	0.274
Neonatal death within 28 days of life	44 (0.3)	13 (0.5)	3 (0.3)	3 (0.30)	0.502
5-minute Apgar < 7	201 (1.5)	50 (2.0)	17 (1.7)	32 (3.2)	<0.001
NICU admission	1,724 (12.6)	382 (15.1)	153 (15.5)	296 (29.5)	<0.001
Small-for-gestational-age	1,391 (10.3)	262 (10.5)	88 (9.0)	159 (16.0)	<0.001
Spontaneous preterm birth < 37 weeks	521 (5.0)	108 (5.8)	32 (4.7)	43 (8.1)	0.007
Indicated preterm birth < 37 weeks	154 (1.5)	57 (3.2)	32 (4.7)	103 (17.4)	<0.001

IUFD, intrauterine fetal demise; NICU, neonatal intensive care unit

Data are n (%)

^*P values determined using Pearson chi-squared test or exact chi-squared test