Measuring dosage: a key factor when assessing the relationship between prenatal case management and birth outcomes

Racial and Geographic Variation of Prenatal Care Coordination Receipt in the State of Wisconsin, 2010-2019

Medicaid-funded obstetric care coordination programs supplement prenatal care with tailored services to improve birth outcomes. It is uncertain whether these programs reach populations with elevated risks of adverse birth outcomes-namely non-white, highly rural, and highly urban populations. This study evaluates racial and geographic variation in the receipt of Wisconsin Medicaid's Prenatal Care Coordination (PNCC) program during 2010-2019. We sample 250,596 Medicaid-paid deliveries from a cohort of linked Wisconsin birth records and Medicaid claims. We measure PNCC receipt during pregnancy dichotomously (none; any) and categorically (none; assessment/care plan only; service receipt), and we stratify the sample on three maternal characteristics: race/ethnicity, urbanicity of residence county; and region of residence county. We examine annual trends in PNCC uptake and conduct logistic regressions to identify factors associated with assessment or service receipt. Statewide PNCC outreach decreased from 25% in 2010 to 14% in 2019, largely due to the decline in beneficiaries who only receive assessments/care plans. PNCC service receipt was greatest and persistent in Black and Hispanic populations and in urban areas. In contrast, PNCC service receipt was relatively low and shrinking in American Indian/Alaska Native, Asian/Pacific Islander, and white populations and in more rural areas. Additionally, being foreign-born was associated with an increased likelihood of getting a PNCC assessment in Asian/Pacific Islander and Hispanic populations, but we observed the opposite association in Black and white populations. Estimates signal a gap in PNCC receipt among some at-risk populations in Wisconsin, and findings may inform policy to enhance PNCC outreach.

Understanding care coordination for Veterans with complex care needs: protocol of a multiple-methods study to build evidence for an effectiveness and implementation study

Background

For patients with complex health and social needs, care coordination is crucial for improving their access to care, clinical outcomes, care experiences, and controlling their healthcare costs. However, evidence is inconsistent regarding the core elements of care coordination interventions, and lack of standardized processes for assessing patients' needs has made it challenging for providers to optimize care coordination based on patient needs and preferences. Further, ensuring providers have reliable and timely means of communicating about care plans, patients' full spectrum of needs, and transitions in care is important for overcoming potential care fragmentation. In the Veterans Health Administration (VA), several initiatives are underway to implement care coordination processes and services. In this paper, we describe our study underway in the VA aimed at building evidence for designing and implementing care coordination practices that enhance care integration and improve health and care outcomes for Veterans with complex care needs.

Methods

In a prospective observational multiple methods study, for Aim 1 we will use existing data to identify Veterans with complex care needs who have and have not received care coordination services. We will examine the relationship between receipt of care coordination services and their health outcomes. In Aim 2, we will adapt the Patient Perceptions of Integrated Veteran Care questionnaire to survey a sample of Veterans about their experiences regarding coordination, integration, and the extent to which their care needs are being met. For Aim 3, we will interview providers and care teams about their perceptions of the innovation attributes of current care coordination needs assessment tools and processes, including their improvement over other approaches (relative advantage), fit with current practices (compatibility and innovation fit), complexity, and ability to visualize how the steps proceed to impact the right care at the right time (observability). The provider interviews will inform design and deployment of a widescale provider survey.

Discussion

Taken together, our study will inform development of an enhanced care coordination intervention that seeks to improve care and outcomes for Veterans with complex care needs.

Spillover Effects of Prenatal Care Coordination on Older Siblings Beyond the Mother-Infant Dyad

BACKGROUND

Pregnancy care coordination increases preventive care receipt for mothers and infants. Whether such services affect other family members' health care is unknown.

OBJECTIVE

To estimate the spillover effect of maternal exposure to Wisconsin Medicaid's Prenatal Care Coordination (PNCC) program during pregnancy with a younger sibling on the preventive care receipt for an older child.

RESEARCH DESIGN

Gain-score regressions-a sibling fixed effects strategy-estimated spillover effects while controlling for unobserved family-level confounders.

SUBJECTS

Data came from a longitudinal cohort of linked Wisconsin birth records and Medicaid claims. We sampled 21,332 sibling pairs (one older; one younger) who were born during 2008-2015, who were <4 years apart in age, and whose births were Medicaid-covered. In all, 4773 (22.4%) mothers received PNCC during pregnancy with the younger sibling.

MEASURES

The exposure was maternal PNCC receipt during pregnancy with the younger sibling (none; any). The outcome was the older sibling's number of preventive care visits or preventive care services in the younger sibling's first year of life.

RESULTS

Overall, maternal exposure to PNCC during pregnancy with the younger sibling did not affect older siblings' preventive care. However, among siblings who were 3 to <4 years apart in age, there was a positive spillover on the older sibling's receipt of care by 0.26 visits (95% CI: 0.11, 0.40 visits) and by 0.34 services (95% CI: 0.12, 0.55 services).

CONCLUSION

PNCC may only have spillover effects on siblings' preventive care in selected subpopulations but not in the broader population of Wisconsin families.

Should case management be considered a component of obstetrical interventions for pregnancies at risk of preterm birth?

Preterm birth remains the leading cause of morbidity and mortality among nonanomalous neonates in the United States. Unfortunately, preterm birth rates remain high despite current medical interventions such as progestogen supplementation and cerclage placement. Case management, which encompasses coordinated care aimed at providing a more comprehensive and supportive environment, is a key component in improving health and reducing costs in other areas of medicine. However, it has not made its way into the general lexicon and practice of obstetrical care. Case management intended for decreasing prematurity or ameliorating its consequences may include specialty clinics, social services, coordination of specialty services such as nutrition counseling, home visits or frequent phone calls by specially trained personnel, and other elements described herein. It is not currently included in nor is it advocated for as a recommended prematurity prevention approach in the American College of Obstetricians and Gynecologists or Society for Maternal-Fetal Medicine guidelines for medically indicated or spontaneous preterm birth prevention. Our review of existing evidence finds consistent reductions or trends toward reductions in preterm birth with case management, particularly among individuals with high a priori risk of preterm birth across systematic reviews, metaanalyses, and randomized controlled studies. These findings suggest that case management has substantial potential to improve the environmental, behavioral, social, and psychological factors with patients at risk of preterm birth.

Effects of a Case Management Program for Women With Pregnancy-Induced Hypertension

BACKGROUND

Pregnancy-induced hypertension (PIH) is a leading cause of maternal and fetal morbidity and mortality. Although case management programs have been proposed to improve maternal and fetal outcomes in high-risk pregnancies, limited data are available regarding the effect of case management on women with PIH.

PURPOSE

The aim of this study was to evaluate the effect of an antepartum case management program on stress, anxiety, and pregnancy outcomes in women with PIH.

METHODS

A quasi-experimental research design was employed. A convenience sample of women diagnosed with PIH, including preeclampsia, was recruited from outpatient clinics at a medical center in southern Taiwan. Sixty-two women were assigned randomly to either the experimental group (n = 31) or the control group (n = 31). The experimental group received case management for 8 weeks, and the control group received routine clinical care. Descriptive statistics, independent t or Mann-Whitney U tests, chi-square or Fisher's exact tests, paired t test, and generalized estimating equations were used to analyze the data.

RESULTS

The average age of the participants was 35.1 years (SD = 4.5). No significant demographic or clinical differences were found between the control and experimental groups. The results of the generalized estimating equations showed significantly larger decreases in stress and anxiety in the experimental group than in the control group. No significant differences were identified between the two groups with respect to infant birth weeks, infant birth weight, average number of medical visits, or frequency of hospitalization.

CONCLUSIONS/IMPLICATIONS FOR PRACTICE

The nurse-led case management program was shown to have short-term positive effects on the psychosocial outcomes of a population of Taiwanese patients with PIH. These results have important clinical implications for the healthcare administered to pregnant women, particularly in terms of improving the outcomes in those with PIH.

The impact of the Medicaid high-risk ob care management program in New York State

OBJECTIVES

To examine the effect of high-risk obstetrics (HROB) care management on infant health and Medicaid expenditures.

DATA SOURCES/STUDY SETTING

Medicaid administrative data and vital statistics from 2011 to 2013. In New York State, all Medicaid managed care plans provide HROB care management to their members.

STUDY DESIGN

We conducted a retrospective cohort study with a nonequivalent control group. Selection bias was addressed by using probit and OLS models with the Heckman correction and inverse probability weight with regression adjustment.

PRINCIPAL FINDINGS

While program enrollment was associated with poor infant health outcomes (low birthweight, very low birthweight, preterm delivery, and gestational age), correcting for sample selection substantially improved most of these outcomes. All infant health outcomes significantly improved as the number of weeks in the program increased. We found that a 1-week increase in program duration is associated with a 0.01 percentage point decrease in low birthweight and a 0.03 percentage point decrease in very low birthweight. Further, a 1-week increase in program duration decreases the probability of preterm delivery by 0.01 percentage points and increases gestational age by 0.14 days. Medicaid expenditures for maternity care and newborn delivery were not significantly or materially affected by program enrollment or program duration.

CONCLUSIONS

High-risk obstetrics care management appears to successfully identify individuals with high-risk pregnancies and improve health without substantially increasing medical expenses.

Estimating the effect of Prenatal Care Coordination in Wisconsin: A sibling fixed effects analysis

OBJECTIVE

To estimate Prenatal Care Coordination's (PNCC) effect on birth outcomes for Wisconsin Medicaid-covered deliveries.

DATA SOURCE

A longitudinal cohort of linked Wisconsin birth records (2008-2012), Medicaid claims, and state-administered social services.

STUDY DESIGN

We defined PNCC treatment dichotomously (none vs. any) and by service level (none vs. assessment/care plan only vs. service uptake). Outcomes were birthweight (grams), low birthweight (<2500 g), gestational age (completed weeks), and preterm birth (<37 weeks). We estimated PNCC's effect on birth outcomes, adjusting for maternal characteristics, using inverse-probability of treatment weighted and sibling fixed effects regressions.

DATA COLLECTION/EXTRACTION METHODS

We identified 136 224 Medicaid-paid deliveries, of which 33 073 (24.3 percent) linked to any PNCC claim and 22 563 (16.6 percent) linked to claims for PNCC service uptake.

PRINCIPAL FINDINGS

Sibling fixed effects models-which best adjust for unobserved confounding and treatment selection-produced the largest estimates for all outcomes. For example, in these models, PNCC service uptake was associated with a 1.3 percentage point (14 percent) reduction and a 1.8 percentage point (17 percent) reduction in the probabilities of low birthweight and preterm birth, respectively (all P < .05).

CONCLUSIONS

PNCC's modest but significant improvement of birth outcomes should motivate stronger PNCC outreach and implementation of similar programs elsewhere.

Variable Uptake of Medicaid-Covered Prenatal Care Coordination: The Relevance of Treatment Level and Service Context

Prenatal care coordination programs direct pregnant Medicaid beneficiaries to medical, social, and educational services to improve birth outcomes. Despite the relevance of service context and treatment level to investigations of program implementation and estimates of program effect, prior investigations have not consistently attended to these factors. This study examines the reach and uptake of Wisconsin's Prenatal Care Coordination (PNCC) program among Medicaid-covered, residence occurrence live births between 2008 and 2012. Data come from the Big Data for Little Kids project, which harmonizes birth records with multiple state administrative sources. Logistic regression analyses measured the association between county- and maternal-level factors and the odds of any PNCC use and the odds of PNCC uptake (> 2 PNCC services among those assessed). Among identified Medicaid-covered births (n = 136,057), approximately 24% (n = 33,249) received any PNCC and 17% (n = 22,680) took up PNCC services. Any PNCC receipt and PNCC uptake varied substantially across counties. A higher county assessment rate was associated with a higher odds of individual PNCC assessment but negatively associated with uptake. Mothers reporting clinical risk factors such as chronic hypertension and previous preterm birth were more likely to be assessed for PNCC and, once assessed, more likely to received continued PNCC services. However, most mothers reporting clinical risk factors were not assessed for services. Estimates of care coordination's effects on birth outcomes should account for service context and the treatment level into which participants select.

Development and implementation of a screen-and-refer approach to addressing maternal depression, substance use, and intimate partner violence in home visiting clients

Perinatal maternal depression (MD), substance use (SU), and intimate partner violence (IPV) are critical public health concerns with significant negative impacts on child development. Bolstering the capacity of home visiting (HV) programs to address these significant risk factors has potential to improve child and family outcomes. This study presents a description and mixed-methods feasibility evaluation of the "Home Visitation Enhancing Linkages Project (HELP)," a screen-and-refer approach to addressing MD, SU, and IPV within HV aimed at improving risk identification and linkage to treatment among HV clients. HELP was a three-phase intervention that included three evidence-based interventions: screening, motivational interviewing (MI), and case management (CM). This study presents quantitative fidelity data from 21 home visitors reporting on 116 clients in 4 HV programs, as well as qualitative data from structured interviews with 14 home visitors. Nearly all clients were screened and 22% screened positive on at least one risk domain. Rates of MI and CM implementation were lower than expected, however home visitors implemented general supportive interventions at high rates. Home visitor interviews revealed the following factors that may have impacted HELP implementation: client disclosure of risk, barriers to treatment access, systems integration, home visitor role perception, and integration of HELP into the broader HV curriculum. Implications of study findings for the design of future attempts to address maternal risk within HV are discussed.

A Longitudinal Study of Changes in Prenatal Care Utilization Between First and Second Births and Low Birth Weight

OBJECTIVES

Because previous analyses of prenatal care (PNC) utilization and risk of low birth weight (LBW) may have been influenced by selection bias, we conducted a study using longitudinal data of women with repeat pregnancies.

METHODS

We analyzed Washington State birth certificates of first and second live births (2003-2012). We estimated relative risk (RR) of LBW at second birth associated with Kotelchuck Index PNC level among women stratified by level of PNC in their first birth (n = 67,571).

RESULTS

Among women with inadequate PNC prior to their first birth (n = 10,355), women with intermediate or adequate PNC before their second birth (n = 7464) had a reduced risk of LBW (adjusted RR 0.61, 95% CI: 0.48, 0.78) compared to those whose PNC level remained inadequate. Likewise, among women with intermediate or adequate PNC prior to their first birth (n = 57,216), those with inadequate PNC before the second birth (n = 7095) had higher risk of LBW (adjusted RR 1.59, 95% CI: 1.36, 1.85) compared to those who remained at intermediate or adequate PNC.

CONCLUSIONS

Our findings support the hypothesis that PNC decreases LBW risk at second birth, independent of factors related to the utilization of PNC at first birth.

Mental Health Stress, Family Resources and Psychological Distress: A Longitudinal Mediation Analysis in African American Grandmothers Raising Grandchildren

OBJECTIVES

This study examines the effectiveness of a multidisciplinary intervention for African American grandmothers raising grandchildren on the relationship between dichotomized levels of mental health stress (low vs. high) and elevated levels of psychological distress, mediated by perceptions of family resources.

METHOD

A nonrandom sample of African American grandmothers (N = 679) was assessed to test the predictive relations among study constructs in the context of a prospective mediational model.

RESULTS

Perception of family resources contributes to lower psychological distress among custodial grandmothers exhibiting low and high levels of mental health stress. There was no significant difference in the strength of the mediated effects between the 2 mental health stress groups.

CONCLUSION

The findings suggest appropriate resource-focused interventions can enhance grandmothers' subjective assessments of family resources and reduce psychological distress. However, additional research is needed to ascertain the consistency and generalizability of findings.

Improving Medicaid: three decades of change to better serve women of childbearing age

Over the past 3 decades, major changes enhanced Medicaid's role in improving the health of women and perinatal outcomes. Reforms in the 1980s and 1990s had impact not only on coverage but also on current policy debates. Whether or not states expand eligibility under the Affordable Care Act, Medicaid is important. Increased coverage for well-woman visits, preconception care, and contraceptive methods are opportunities in gynecology. As a critical source of maternity coverage, Medicaid can improve prenatal care, reduce preterm births, limit early elective deliveries, and increase postpartum visits. Obstetrician-gynecologists play a role in translating coverage into access to quality services.

Depression, Social Support, and Mental Health: A Longitudinal Mediation Analysis in African American Custodial Grandmothers

Custodial grandparents raising grandchildren experience intense levels of stress that can lead to depression and other forms of psychological distress. Drawing on a coping model of family stress, adjustment, and adaptation, we explored the relationship between depression and mental health quality of life mediated by social support and moderated by grandparent's age. The sample consisted of 667 African American custodial grandmothers, dichotomized into two age groupings, ≤55 (n = 306) and 55 + (n = 361). All grandmothers participated in a 12-month support intervention. The prospective analysis revealed social support was a mediator in the association between depressive symptoms and mental health quality of life for older African American grandmothers; however, this same relationship did not hold for their younger counterparts. Study limitations and future research directions are discussed.

A Community-Based Home Visitation Program's Impact on Birth Outcomes

BACKGROUND

MOMS Orange County is a coordinated home visitation program in which trained paraprofessional home visitors work under the close supervision of registered nurses. This model was developed to address health disparities in birth outcomes in a Hispanic community in Orange County, CA.

PURPOSE

The primary objective was to test the impact of MOMS Orange County on birth outcomes. The second objective was to examine the breadth of prenatal health education topics as a mediator of the relationship between home visits and birth outcomes.

METHODS

A retrospective cohort design was used. Paraprofessional home visitors collected prenatal and postnatal data during home visits. Only those whose birth outcomes were obtained were included in the analysis (N = 2,027 participants). Regression models were conducted to test the associations between prenatal home visits and birth outcomes, adjusting for 10 covariates.

RESULTS

Number of prenatal home visits predicted higher birthweight and greater gestational age at birth. Breadth of health education topics partially mediated the associations between home visits and birthweight. The same mediation was revealed with gestational age at birth.

CLINICAL IMPLICATIONS

The MOMS Orange County prenatal home visitation program may be a promising approach to decrease adverse birth outcomes in disadvantaged communities. Rigorously designed studies are needed to further test this model.

Statewide Medicaid Enhanced Prenatal Care Programs and Infant Mortality

OBJECTIVE

To evaluate whether participation in a statewide enhanced prenatal and postnatal care program, the Maternal Infant Health Program (MIHP), reduced infant mortality risk.

METHODS

Data included birth and death records, Medicaid claims, and program participation. The study population consisted of Medicaid-insured singleton infants born between January 1, 2009, and December 31, 2012, in Michigan (n = 248 059). The MIHP participants were propensity score-matched with nonparticipants based on demographics, previous pregnancies, socioeconomic status, and chronic disease. Infant mortality, neonatal mortality, and postneonatal mortality analyses were presented by race.

RESULTS

Infants with any MIHP participation had reduced odds of death in the first year of life compared with matched nonparticipants (odds ratio [OR] 0.73, 95% confidence interval [CI] 0.63-0.84). Infant death odds were reduced both among black infants (OR 0.71, 95% CI 0.58-0.87) and infants of other races (OR 0.74, 95% CI 0.61-0.91). Neonatal death (OR 0.70, 95% CI 0.57-0.86) and postneonatal death odds (OR 0.78, 95% CI 0.63-0.96) were also reduced. Enrollment and screening in MIHP by the end of the second pregnancy trimester and at least 3 additional prenatal MIHP contacts reduced infant mortality odds further (OR 0.70, 95% CI 0.58-0.85; neonatal: OR 0.67, 95% CI 0.51-0.89; postneonatal: OR 0.74, 95% CI 0.56-0.98).

CONCLUSIONS

A state Medicaid-sponsored population-based home-visitation program can be a successful approach to reduce mortality risk in a diverse, disadvantaged population. A likely mechanism is the reduction in the risk of adverse birth outcomes, consistent with previous findings on the effects of the program.

A Statewide Medicaid Enhanced Prenatal and Postnatal Care Program and Infant Injuries

To compare infant injuries in the first year of life between Maternal Infant Health Program (MIHP) participants and matched comparison groups. The population was the cohort of Medicaid-insured singleton infants born in 2011 in Michigan who had continuous Medicaid insurance and survived the first year after birth (N = 51,078). Propensity score matching was used to compare participants in MIHP to matched comparison groups from among the nonparticipants. Injury episodes were defined based on Medicaid claims in the first year of life. Matched comparisons were performed using McNemar, Bowker, and Wilcoxon signed rank tests to assess the effects of program participation on infant injuries. Infants of MIHP participants were more likely to have injury episodes (11.7 vs. 10.4 %, p < 0.01) and a higher rate of episodes (126.9/1,000 infants vs. 109.6/1,000) compared to matched nonparticipants. Infants of MIHP participants were more likely to have superficial injuries (4.9 vs. 3.9 %, p < 0.01) and a higher rate of episodes related to superficial injuries (49.7/1,000 vs. 39.6/1,000), which mainly accounted for the difference in injury visits between groups. Similar results were found among those enrolled and risk-screened in the program by the 2nd pregnancy trimester and who received a dosage of at least three additional MIHP contacts when compared to matched nonparticipants. MIHP participants did not experience reductions in infant injuries in the first year of life compared to matched nonparticipants. Possible explanations may include increased health-seeking behavior of the mothers participating in MIHP or improved recognition of infant injuries that warrant medical attention.

Medicaid home visitation and maternal and infant healthcare utilization

BACKGROUND

The Michigan Maternal and Infant Health Program (MIHP) is a population-based home-visitation program providing care coordination, referrals, and visits based on a plan of care. MIHP is available to all Medicaid-eligible pregnant women and infants aged ≤1 year in Michigan.

PURPOSE

To assess the effects of MIHP participation on maternal and infant healthcare utilization.

METHODS

Propensity-score matching methods were used to assess differences in healthcare utilization between MIHP participants and nonparticipants using 2009-2010 Medicaid claims and administrative data obtained from the Michigan Department of Community Health. Data were analyzed between October 2011 and March 2013.

RESULTS

MIHP participants had higher odds of receiving any prenatal care compared to matched women not participating in MIHP (OR=2.94, 95% CI=2.43, 3.60) and higher odds of receiving adequate prenatal care (OR=1.06, 95% CI=1.01, 1.11). MIHP participants had higher odds of receiving an appropriately timed postnatal visit (OR=1.50, 95% CI=1.43, 1.57). Infants participating in MIHP had higher odds of receiving any well-child visits over the first year of life (OR=1.70, 95% CI=1.51, 1.93) and higher odds of receiving the appropriate number of well-child visits over their first year of life (OR=1.47, 95% CI=1.35, 1.60) compared to matched nonparticipant infants.

CONCLUSIONS

The results from Michigan provide strong evidence for the effectiveness of a Medicaid-sponsored population-based home-visitation program in improving maternal prenatal and postnatal care and infant care. This evidence is important to consider as the federal healthcare reform is implemented and states are making decisions on the expansion of the Medicaid program.