Study shows Black infants at risk for poor birth outcomes across Minnesota

In Minnesota, babies of U.S.-born Black pregnant people suffer twice the rate of low-birth weight and other adverse birth issues as their white counterparts. University of Minnesota School of Public Health (SPH) researchers recently examined the role structural racism plays in harmful birth outcome disparities and found it's an extensive problem statewide.

SPH researcher Tongtan (Bert) Chantarat led the study published in Health Services Research. The study was co-authored by Rachel Hardeman, SPH associate professor and Blue Cross Endowed Professor of Health and Racial Equity, and director of the Center for Antiracism Research for Health Equity at the SPH, and David Van Riper of the Minnesota Population Center. 

Prior research has examined racial birth disparities in geographic areas using single-dimensional measures of structural racism, such as housing segregation or income inequity. However, analysis using only a single measure can fail to reveal harmful structural racism or the combined effects of multiple factors in a community.

To account for the various influences, the SPH researchers used an analytical approach they developed called the Multidimensional Measure of Structural Racism (MMSR). The MMSR roots out structural racism by measuring a community's level of residential segregation, educational inequity, employment inequity, income inequity, homeownership inequity, criminal justice inequity, and how those factors interact. 

To understand how structural racism harms pregnant people, the researchers deployed the MMSR using 2017 demographic data from the American Community Survey, incarceration information from Vera Institute of Justice and 2018 birth outcomes data for nearly 50,000 babies from the Minnesota Department of Health.

The study found:

• Three distinct patterns of structural racism within Minnesota communities: Type A communities have high education, income and criminal justice inequities, moderately high residential segregation and homeownership inequity, but low employment inequity. Type B areas have high education, employment and homeownership inequities, but moderately high levels of residential segregation, income and criminal justice inequities. Type C neighborhoods have high income inequity, are moderately high on residential segregation, employment,  homeownership and criminal justice inequities, but are low on education inequity.
• The risks of preterm birth, low birth weight and small-for-gestational-age instances for U.S.-born Black pregnant Minnesotans were always higher than for their white counterparts regardless of the type of communities in which they lived during pregnancy. 
• The risks among U.S.-born Black pregnant people did not vary significantly across the area types. 
• When structural racism was viewed in its totality, it had statistically equivalent harms on Black babies no matter where they lived in Minnesota. 

The authors said the results affirm that structural racism is multidimensional, which means antiracist solutions need to be multidimensional, too, such as implementing policies that raise employment, income, and home-ownership among Black residents. The researchers call on policy makers to take their findings into account as they work to improve the health of Black Minnesotans through systemic reform.