Neighborhood Racialized Economic Polarization, Home Visiting Coverage, and Adverse Birth Outcomes in a Medicaid-eligible Population.

Background: Residential polarization shaped by racial segregation and concentrations of wealth (hereafter neighborhood racialized economic polarization) results in both highly deprived and highly privileged neighborhoods. Numerous studies have found a negative relationship between neighborhood racialized economic polarization and birth outcomes. We investigated whether community-informed home visiting programs achieve high rates of service coverage in highly deprived neighborhoods and can attenuate the deleterious effect of neighborhood polarization on birth outcomes.

Methods: We used 2016-2019 data from Michigan's statewide database that links birth records, Medicaid claims, and program participation (N = 211,412). We evaluated whether 1) home visiting programs achieved high rates of service coverage in highly deprived neighborhoods, 2) participation in home visiting may help to mitigate the negative relationship between neighborhood polarization and birth outcomes, and 3) the reductions in preterm birth and low birthweight were larger among Black birthing individuals. Data were examined using multilevel generalized linear models and mediation analysis.

Results: The statewide home visiting program achieved higher rates of coverage in the most deprived neighborhoods (21.0% statewide, 28.3% in the most deprived vs. 10.4% in the most privileged neighborhoods). For all, home visiting participation was associated with a decrease in the relationship between neighborhood polarization and preterm birth by 6.8% (mean indirect effect, -0.008; 95% confidence interval, -0.011 to -0.005), and by 5.2% (mean indirect effect, -0.013; 95% confidence interval, -0.017 to -0.009) for low birthweight, adjusting for individual-level risk factors. The decrease was larger among Black individuals.

Conclusions: A statewide Medicaid-sponsored home visiting program achieved high rates of service coverage in highly deprived neighborhoods. Program participation may help to mitigate the negative relationship between neighborhood polarization and birth outcomes, and more so among Black individuals. Continued support for home visiting services is required to better engage birthing individuals in neighborhoods with concentrated deprivation and to decrease disparities.