• Policy design and financing drive who accesses maternity care and how much care is delivered; Medicaid expansion, insurance mix, and payment design shape prenatal utilization, with managed care reforms influencing access and cost containment. [3], [17], [12], [19], [15]

• Geographic disparities in access to obstetric care appear as a recurring policy problem: provider shortages, travel for services, and uneven resource distribution. Documented in rural access to obstetric care (W2074716334), Mississippi Improved Child Health Project prenatal care/low birthweight outcomes (W2003782341), Missouri prenatal participation related to Medicaid costs (W2407602459), and consumer-location preferences in maternity services (W56552492).

• Surveillance and data infrastructure underpin policy formation, including maternal mortality surveillance (W2096003082), the Health of Americas Children data book (W2612727235), state maternal mortality in Massachusetts (W1970939717), and national/expenditure analyses (W2430876176, W1971499577).

• Consumer and provider perspectives shape perceived quality and practice patterns, with findings on consumer views of maternity services (W56552492), postpartum reasons for inadequate prenatal care (W2000046567), family-practice delivery models (W2437595079), and advocacy via the Safe Motherhood Initiative (W2025950811).

• Prenatal care quality and support influence birth outcomes, demonstrated by Antenatal Preparation and Labor Support (W1995484571) and associations with access constraints, insurance status, and regional context that affect care utilization and outcomes (W2074716334, W260225316, W2003782341).