Issue of Data Imbalance on Low Birthweight Baby Outcomes Prediction and Associated Risk Factors Identification: Establishment of Benchmarking Key Machine Learning Models With Data Rebalancing Strategies.

Background: Low birthweight (LBW) is a leading cause of neonatal mortality in the United States and a major causative factor of adverse health effects in newborns. Identifying high-risk patients early in prenatal care is crucial to preventing adverse outcomes. Previous studies have proposed various machine learning (ML) models for LBW prediction task, but they were limited by small and imbalanced data sets.

Disparities in postpartum contraceptive use among immigrant women with restricted Medicaid benefits.

Background: The Emergency Medicaid program offers restricted Medicaid benefits for people who meet the same financial eligibility criteria as Traditional Medicaid recipients but do not meet the citizenship requirements for enrollment in Traditional Medicaid. By federal law, Emergency Medicaid covers care for life-threatening emergencies or a hospital admission for childbirth. No prenatal or postpartum care is covered.

Analysis of Contraceptive Use Among Immigrant Women Following Expansion of Medicaid Coverage for Postpartum Care.

Importance: Access to postpartum care is restricted for low-income women who are recent or undocumented immigrants enrolled in Emergency Medicaid.

Objective: To examine the association of a policy extending postpartum coverage to Emergency Medicaid recipients with attendance at postpartum visits and use of postpartum contraception.

Design, Setting, And Participants: This cohort study linked Medicaid claims and birth certificate data from 2010 to 2019 to examine changes in postpartum care coverage on postpartum care and contraception use.

Association of Expanded Prenatal Care Coverage for Immigrant Women With Postpartum Contraception and Short Interpregnancy Interval Births.

Importance: Access to prenatal and postpartum care is restricted among women with low income who are recent or undocumented immigrants enrolled in Emergency Medicaid.

Objective: To examine the association of extending prenatal care coverage to Emergency Medicaid enrollees with postpartum contraception and short interpregnancy interval births.

Design, Setting, And Participants: This cohort study used a difference-in-differences design to compare the staggered rollout of prenatal care in Oregon with South Carolina, a state that does not cover prenatal or postpartum care.

Coverage of immediate postpartum long-acting reversible contraception has improved birth intervals for at-risk populations.

Background: In 2012, South Carolina revised the Medicaid policy to cover reimbursement for immediate postpartum long-acting reversible contraception. Immediate postpartum long-acting reversible contraception may improve health outcomes for populations at risk with a subsequent short-interval pregnancy.

Objectives: We examined the impact of the Medicaid policy change on the initiation of long-acting and reversible contraception (immediate postpartum and postpartum) within key populations.

Precision of provider licensure data for mapping member accessibility to Medicaid managed care provider networks.

Background: In July 2018, the Centers for Medicare and Medicaid Services (CMS) updated its Medicaid Managed Care (MMC) regulations that govern network and access standards for enrollees. There have been few published studies of whether there is accurate geographic information on primary care providers to monitor network adequacy.

Methods: We analyzed a sample of nurse practitioner (NP) and physician address data registered in the state labor, licensing, and regulation (LLR) boards and the National Provider Index (NPI) using employment location data contained in the patient-centered medical home (PCMH) data file.

Small-area Variation in Hypertension Prevalence among Black and White Medicaid Enrollees.

Objectives: To examine within-state geographic heterogeneity in hypertension prevalence and evaluate associations between hypertension prevalence and small-area contextual characteristics for Black and White South Carolina Medicaid enrollees in urban vs rural areas.

Design: Ecological.

Setting: South Carolina, United States.