Infant Outcomes in Hypertensive Women: Are there Moderating Effects of Prenatal Care and Race/Ethnicity?

ABSTRACT

BACKGROUND: Hypertensive disorders of pregnancy is one of the leading causes of adverse infant outcomes. Black women are disproportionately affected by hypertensive disorders of pregnancy, and it associated adverse outcomes. Adequate prenatal care may improve adverse infant outcomes. However, the evidence on adequate prenatal care improving birth outcomes for women with hypertensive disorders of pregnancy especially for Blacks is limited. This study examined the role of adequate prenatal care and race/ethnicity as moderators of hypertensive disorders of pregnancy on infant outcomes. METHODS: The sample was obtained from the 2016-2019 Pregnancy Risk Assessment Monitoring Surveillance dataset from North Carolina. We compared adequate prenatal care among women with hypertensive disorders of pregnancy (n = 610) to women without(n = 2,827), and women with hypertensive disorders of pregnancy with adequate prenatal care to women hypertensive disorders of pregnancy with inadequate prenatal care. RESULTS: The weighted prevalence of hypertensive disorders of pregnancy was 14.1%. Adequate prenatal care was associated with better infant outcomes for low birth weight (AOR = 0.72; 95% CI = 0.58, 0.90) and preterm birth (AOR = 0.62; 95% CI = 0.46, 0.82). Although these effects were not moderated by Black race/ethnicity, Black women independently also had worse outcomes for preterm birth (AOR = 1.59; 95% CI = 1.11, 2.28) and low birth weight (AOR = 1.81; 95% CI = 1.42, 2.29). CONCLUSIONS: Moderation of hypertensive disorders of pregnancy effects on infant outcomes by prenatal care and race/ethnicity was not found. Women with hypertensive disorders of pregnancy who received inadequate prenatal care experienced worse adverse birth outcomes compared to women without hypertensive disorders of pregnancy. Strategies to improve prenatal care, particularly among underserved populations at risk for hypertensive disorders of pregnancy, need to be a public health priority.