Examining the Causal Impact of Prenatal Home Visiting on Birth Outcomes: A Propensity Score Analysis

Community Health Workers: Improving Home Visiting Engagement of High-Risk Birthing People in Segregated Neighborhoods

CONTEXT

Racial and ethnic disparities in perinatal health remain a public health crisis. Despite improved outcomes from home visiting (HV) participation during pregnancy, most eligible individuals of color do not engage. Neighborhood segregation, a manifestation of structural racism, may impose constraints on engaging eligible individuals in HV.

OBJECTIVE

To examine whether race, ethnicity, and/or language-concordant community health workers (CHWs) increased HV engagement for birthing people in segregated neighborhoods.

DESIGN

Program evaluation using administrative linked data from birth records, Medicaid claims, and HV program participation. Strong Beginnings (SB), a program with HV provided by CHWs working with nurses and social workers, was compared with the Maternal Infant Health Program (MIHP), a state Medicaid-sponsored HV program without CHW involvement. Data were analyzed using χ 2 tests and Poisson regressions.

PARTICIPANTS

A total of 4560 individuals with a Medicaid-eligible birth between 2016 and 2019, including 1172 from SB and 3388 from the MIHP.

MAIN OUTCOME MEASURES

Penetration (percentage of participants in HV among all Medicaid-eligible individuals across quintiles of neighborhood segregation) and dosage (the total number of home visits from both CHWs and nurses/social workers, and then restricted to those from nurses/social workers).

RESULTS

SB penetrated more segregated neighborhoods than the MIHP (58.4% vs 48.3%; P < .001). SB participants received a higher dosage of home visits (mean [SD]: 11.9 [6.1]) than MIHP participants (mean [SD]: 4.4 [2.8], P < .001). Importantly, CHWs did not replace but moderately increased home visits from nurses and social workers (51.1% vs 35.2% with ≥5 intervention visits, P < .001), especially in more segregated neighborhoods.

POLICY IMPLICATION

Community-informed HV models intentionally designed for people facing disparities may help facilitate program outreach to segregated neighborhoods with concentrated deprivation and reduce racial and ethnic disparities.

CONCLUSIONS

An HV program provided by CHWs working with nurses and social workers was associated with an increase in penetration and dosage in segregated neighborhoods, compared with HV without CHW involvement. This underscores the value of CHWs partnering with licensed professional workers in improving HV engagement in disadvantaged communities.

Community Health Worker Home Visiting, Birth Outcomes, Maternal Care, and Disparities Among Birthing Individuals With Medicaid Insurance

Importance

Home visiting is recommended to address maternal and infant health disparities but is underused with mixed impacts on birth outcomes. Community health workers, working with nurses and social workers in a combined model, may be a strategy to reach high-risk individuals, improve care and outcomes, and address inequities.

Objective

To assess the association of participation in a home visiting program provided by community health workers working with nurses and social workers (Strong Beginnings) with adverse birth outcomes and maternal care vs usual care among birthing individuals with Medicaid.

Design, Setting, and Participants

This retrospective, population-based, propensity score matching cohort study used an administrative linked database, including birth records and Medicaid claims, linked to program participation. The Strong Beginnings program exposure took place in 1 county that includes the second largest metropolitan area in Michigan. Study participants included primarily non-Hispanic Black and Hispanic Strong Beginnings participants and all mother-infant dyads with a Medicaid-insured birth in the other Michigan counties (2016 through 2019) as potential matching nonparticipants. The data were analyzed between 2021 and 2023.

Exposure

Participation in Strong Beginnings or usual care.

Main Outcomes and Measures

Preterm birth (less than 37 weeks' gestation at birth), very preterm birth (less than 32 weeks' gestation), low birth weight (less than 2500 g at birth), very low birth weight (less than 1500 g), adequate prenatal care, and postnatal care (3 weeks and 60 days).

Results

A total of 125 252 linked Medicaid-eligible mother-infant dyads (mean age [SD], 26.6 [5.6] years; 27.1% non-Hispanic Black) were included in the analytical sample (1086 in Strong Beginnings [mean age (SD), 25.5 (5.8) years]; 124 166 in usual prenatal care [mean age (SD), 26.6 (5.5) years]). Of the participants, 144 of 1086 (13.3%) in the SB group and 14 984 of 124 166 (12.1%) in the usual care group had a preterm birth. Compared with usual prenatal care, participation in the Strong Beginnings program was significantly associated with reduced risk of preterm birth (-2.2%; 95% CI, -4.1 to -0.3), very preterm birth (-1.2%; 95% CI, -2.0 to -0.4), very low birth weight (-0.8%; 95% CI, -1.3 to -0.3), and more prevalent adequate prenatal care (3.1%; 95% CI, 0.6-5.6), postpartum care in the first 3 weeks after birth (21%; 95% CI, 8.5-33.5]), and the first 60 days after birth (23.8%; 95% CI, 9.7-37.9]).

Conclusions and Relevance

Participation in a home visiting program provided by community health workers working with nurses and social workers, compared with usual care, was associated with reduced risk for adverse birth outcomes, improved prenatal and postnatal care, and reductions in disparities, among birthing individuals with Medicaid. The risk reductions in adverse birth outcomes were greater among Black individuals.

Contextual and Policy Influences on the Implementation of Prenatal Care Coordination

Prenatal Care Coordination (PNCC) is a Medicaid fee-for-service that provides reimbursement for supportive services to mothers and infants at high risk of adverse outcomes. Services include health education, care coordination, referral to needed services, and social support. Currently, the implementation of PNCC programs is highly variable. We aimed to identify and describe the contextual factors that influence implementation of PNCC. Using a qualitative descriptive approach and theoretical reflexive thematic analysis techniques, we conducted observation and semistructured interviews with all PNCC staff at two PNCC sites in Wisconsin, representing diversity in region and patient population. We thematically analyzed interview data to examine how contextual factors influenced program implementation with the Consolidated Framework for Implementation Research as a sensitizing model. Observational field notes were used to triangulate interview data. Overall, participants endorsed the goals of PNCC and believed in its potential. However, participants asserted that the external policy context limited their impact. In response, they developed local strategies to combat barriers and work toward better outcomes. Our findings support the need to study the implementation of perinatal public and community health interventions and consider "health in all policies." Several changes would maximize PNCC's impact on maternal health: increased collaboration among policy stakeholders would reduce barriers; increased reimbursement would enable PNCC providers to better meet the complex needs of clients; and expansions in postpartum Medicaid coverage would extend the PNCC eligibility period. Nurses who provide PNCC have unique insights that should be leveraged to inform maternal-child health policy.