The federal Strong Start for Mothers and Newborns initiative supported alternative approaches to prenatal care, enhancing service delivery through the use of birth centers, group prenatal care, and maternity care homes. Using propensity score reweighting to control for medical and social risks, we evaluated the impacts of Strong Start's models on birth outcomes and costs by comparing the experiences of Strong Start enrollees to those of Medicaid-covered women who received typical prenatal care. We found that women who received prenatal care in birth centers had lower rates of preterm and low-birthweight infants, lower rates of cesarean section, and higher rates of vaginal birth after cesarean than did the women in the comparison groups. Improved outcomes were achieved at lower costs. There were few improvements in outcomes for participants who received group prenatal care, although their costs were lower in the prenatal period, and no improvements in outcomes for participants in maternity care homes.

Background: Maternal opioid use disorder (OUD) has serious consequences for maternal and infant health. Analysis of Medicaid enrollee data is critical, since Medicaid bears a disproportionate share of costs. Methods: This study analyzes linked maternal and infant Medicaid claims data and infant birth records in three states in the year before and after a delivery in 2014-2015 (2013-2016) examining health, health care use, treatment, and neonatal outcomes. Diagnosis and procedure codes identify OUD and other substance use disorders (SUDs). Results: In the year before and after delivery, 2.2 percent of the sample had an OUD diagnosis, and 5.9 percent had a SUD diagnosis other than OUD. Of the women with OUD, 72.8% had treatment for a SUD in the year before and after delivery, but most had none in an average enrolled month, and only 8.8% received any methadone treatment in a given month. Pregnant women with OUD had delayed and lower rates of prenatal care compared to women with other substance use disorders (SUDs). Infants of mothers with OUD did not differ from infants of mothers with other SUDs in rate of preterm or low birth weight but had higher NICU admission rates and longer birth hospitalizations. Health care costs for women with an OUD were higher than those with other SUDs. Conclusions: There is an urgent need for comprehensive, evidence-based OUD treatment integrated with maternity care. To fill critical gaps in care, workforce and infrastructure innovations can facilitate delivery of preventive and treatment services coordinated across settings.

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Birth center services must be covered under Medicaid per federal mandate, but reimbursement and other policy barriers prevent birth centers from serving more Medicaid patients. r Midwifery care provided through birth centers improves maternal and infant outcomes and lowers costs for Medicaid beneficiaries. Birth centers offer an array of birth options and have resources to care for patients with medical and psychosocial risks. r Addressing the barriers identified in this study would promote birth centers' participation in Medicaid, leading to better outcomes for Medicaid-covered mothers and newborns and significant savings for the Medicaid program. Context: Midwifery care, particularly when offered through birth centers, has shown promise in both improving pregnancy outcomes and containing costs. The national evaluation of Strong Start for Mothers and Newborns II, an initiative that tested enhanced prenatal care models for Medicaid beneficiaries, found that women receiving prenatal care at Strong Start birth centers experienced superior birth outcomes compared to matched and adjusted counterparts in typical Medicaid care. We use qualitative evaluation data to investigate birth

Background: Medicaid pays for approximately half of United States births, yet little research has explored Medicaid beneficiaries' perspectives on their maternity care. Typical maternity care in the United States has been criticized as too medically focused while insufficiently addressing psychosocial risks and patient education. Enhanced care strives for a more holistic approach. Methods: The perspectives of participants in the Strong Start for Mothers and Newborns II initiative, which provided enhanced prenatal care to women covered by Medicaid or the Children's Health Insurance Program (CHIP) during pregnancy through Birth Centers, Group Prenatal Care, and Maternity Care Homes, are evaluated. Strong Start intended to improve care quality and birth outcomes while lowering costs. We analyzed data from 133 focus groups with 951 pregnant or postpartum women who participated in Strong Start from 2013 to 2017. Results: The majority of focus group participants said that Strong Start's enhanced care offered numerous important benefits over typical maternity care, including considerably more focus on women's psychosocial risk factors and need for education. They praised increased support; nutrition, breastfeeding, and family planning education; community referrals; longer time with practitioners; and involvement of partners in their care. Maternity Care Home participants, however, occasionally voiced concerns over lack of practitioner continuity and short clinical appointments, whereas Group Prenatal Care participants sometimes said they could not attend visits because of lack of childcare. Conclusions: Medicaid and CHIP beneficiaries reported positive experiences with Strong Start care. If more Medicaid practitioners could adopt aspects of the prenatal care approaches that women praised most, it is likely that women's risk factors could be more effectively addressed and their overall care experiences could be improved. K E Y W O R D S enhanced care, Medicaid, prenatal care, Strong Start | 245 HILL et aL.