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. Author manuscript; available in PMC: 2021 Jul 1.
Published in final edited form as: Obstet Gynecol. 2020 Jul;136(1):129–139. doi: 10.1097/AOG.0000000000003885

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