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.
PurposeThe sleep diary is the gold standard of self-reported sleep duration, but its comparability to sleep questionnaires is uncertain. The purpose of this study was to compare self-reported sleep duration between a sleep diary and a sleep questionnaire and to test whether sleep-related disorders were associated with diary-questionnaire differences in sleep duration.Participants and methodsWe compared self-reported sleep duration from 5,432 questionnaire-sleep diary pairs in a longitudinal cohort of 1,516 adults. Participants reported sleep information in seven-day sleep diaries and in questionnaires. Research staff abstracted average sleep durations for three time periods (overall; weekday; weekend) from diaries and questionnaires. For each time period, we evaluated diary-questionnaire differences in sleep duration with Welch's two-sample t-tests. Using linear mixed effects regression, we regressed overall diary-questionnaire sleep duration difference on several participant characteristics: reporting any insomnia symptoms, having sleep apnea, sex, body mass index, smoking status, Short Form-12 Physical Health Composite Score, and Short Form-12 Mental Health Composite Score.ResultsThe average diary-reported overall sleep duration (7.76 hrs) was longer than that of the questionnaire (7.07 hrs) by approximately 41 mins (0.69 hrs, 95% confidence interval: 0.62, 0.76 hrs). Results were consistent across weekday- and weekend-specific differences. Demographic-adjusted linear mixed effects models tested whether insomnia symptoms or sleep apnea were associated with diary-questionnaire differences in sleep duration. Insomnia symptoms were associated with a 17 min longer duration on the diary relative to the questionnaire (β=0.28 hrs, 95% confidence interval: 0.22, 0.33 hrs), but sleep apnea was not significantly associated with diary-questionnaire difference. Female sex was associated with greater diary-questionnaire duration differences, whereas better self-reported health was associated with lesser differences.ConclusionDiaries and questionnaires are somewhat disparate methods of assessing subjective sleep duration, although diaries report longer duration relative to questionnaires, and insomnia symptoms may contribute to greater perceived differences.
Background Women with intellectual and developmental disabilities (IDD) may face greater risk for poor pregnancy outcomes. Our objective was to examine risk of maternal pregnancy complications and birth outcomes in women with IDD compared to women without IDD in Wisconsin Medicaid, from 2007–2016. Methods Data were from the Big Data for Little Kids project, a data linkage that creates an administrative data based cohort of mothers and children in Wisconsin. Women with ≥1 IDD claim the year before delivery were classified as having IDD. Common pregnancy complications and maternal birth outcomes were identified from the birth record. We calculated risk ratios (RR) using log-linear regression clustered by mother. We examined outcomes grouped by IDD-type and explored interaction by race. Results Of 177,691 women with live births, 1,032 (0.58%) had an IDD claim. Of 274,865 deliveries, 1,757 were to mothers with IDD (0.64%). Women with IDD were at greater risk for gestational diabetes (RR: 1.28, 95% CI: 1.0, 1.6), gestational hypertension (RR: 1.22, 95% CI: 1.0, 1.5), and caesarean delivery (RR 1.32, 95% CI: 1.2, 1.4) compared to other women. Adjustment for demographic covariates did not change estimates. Women with intellectual disability were at highest risk of gestational hypertension. Black women with IDD were at higher risk of gestational hypertension than expected under a multiplicative model. Conclusions Women with IDD have increased risk of pregnancy complications and adverse outcomes in Wisconsin Medicaid. Results were robust to adjustment. Unique patterns by IDD types and Black race warrant further exploration.
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.
Background: Shorter gestational age at birth is associated with worse academic performance in childhood. Socio-economic and demographic factors that affect a child's development may modify the relationship between gestational age and later academic performance.Objective: The purpose of this study was to investigate socio-economic and demographic effect modification of gestational age's association with kindergarten-level literacy skills in a longitudinal Wisconsin birth cohort. Methods: We sampled 153 145 singleton births (2007-2010) that linked to Phonological Awareness Literacy Screening-Kindergarten (PALS-K) scores (2012-2016 school years). PALS-K outcomes included meeting the screening benchmark (≥28 points, range 0-102 points) and the standardised score. Multivariable linear regressions of PALS-K outcomes on gestational age (completed weeks) included individual interactions for five maternal attributes measured at delivery: Medicaid coverage, education, age, race/ethnicity, and marital status. Results: Each additional completed gestational week was associated with a 0.5 percentage point increase in the probability of meeting the PALS-K literacy benchmark. The benefit of an additional week of gestational age was 0.5 percentage points (95% confidence interval 0.3, 0.7 percentage points) greater for Medicaid-covered births (0.8 percentage points) relative to non-Medicaid births (0.3 percentage points). Relative to only completing high school, having college education weakened this association by 0.3-0.6 percentage points, depending on years in college. Similar but modest relations emerged with standardised scores. Conclusions: Socio-economic advantage as indicated by non-Medicaid coverage or higher levels of completed maternal education may diminish the cost of preterm birth on a child's kindergarten-level literacy skills. K E Y W O R D S education, effect modification, health disparities, life course, preterm birth A commentary based on this article appears on pages 480-481
Objectives: In 2011, Wisconsin introduced the 2003 Revision of the US Standard Certificate of Live Birth, which includes a variable for principal payer. This variable could help in estimating Medicaid coverage for delivery services, but its accuracy in most states is not known. Our objective was to validate Medicaid payer classification on Wisconsin birth records. Methods: We linked 128 141 Wisconsin birth records (2011-2012 calendar years) to 54 600 Medicaid claims. Using claims as the gold standard, we measured the payer variable’s validity (sensitivity, specificity, positive predictive value [PPV], negative predictive value [NPV]) overall and by maternal age, race/ethnicity, education, facility delivery volume, and the Medicaid proportion of facility delivery volume. Multivariable log-binomial regression tested the association between each characteristic and payer misclassification among Medicaid-paid births. Results: Of 128 141 birth records, 50 652 (39.5%) indicated Medicaid as the principal payer and 54 600 (42.6%) linked to a Medicaid claim. The birth record misclassified 10 007 of 54 600 (18.3%) Medicaid-paid births as non-Medicaid and 6059 of 73 541 (8.2%) non-Medicaid births as Medicaid-paid. The payer variable was less sensitive (81.7%) than specific (91.8%), and PPV and NPV were similar (∼88%). Sensitivity was highest among mothers who were Hispanic, had no high school diploma, or delivered in Medicaid-majority delivery facilities. Maternal age ≥40, maternal education >high school, and delivering in a non–Medicaid-majority delivery facility were positively associated with payer misclassification among Medicaid-paid births. Conclusion: Differential misclassification of principal payer in the birth record may bias risk surveillance of Medicaid deliveries.
Background Women with intellectual and developmental disabilities (IDD) face increased risk of adverse maternal pregnancy outcomes, yet less is known about infant outcomes. Objectives To examine birth outcomes of infants born to mothers with IDD and assess associations with demographics and IDD‐type. Methods We used data from the Big Data for Little Kids project, which links Wisconsin birth records to Medicaid claims for live births covered by Medicaid from 2007 to 2016. We identified IDD using maternal prepregnancy Medicaid claims and ran Poisson regression (with a log link function) with robust variance clustered by mother to compare prevalence of outcomes between singleton births with and without mothers with IDD. We adjusted the associations for demographic factors and estimated prevalence ratios (PR) as the effect measure. We assessed outcomes by IDD‐type (intellectual disability, genetic conditions, cerebral palsy, and autism spectrum disorder) to explore differences by categories of IDD. Results Of 267,395 infants, 1696 (0.6%) had mothers with IDD. A greater percentage of infants with mothers with IDD were born preterm (12.8% vs 7.8%; PR 1.64, 95% confidence interval [CI] 1.42, 1.89), small for gestational age (8.5% vs 5.4%; PR 1.42, 95% CI 1.25, 1.61), and died within 12 months of birth (3.2% vs 0.7%; PR 4.93, 95% CI 3.73, 6.43) compared to infants of mothers without IDD. Prevalence ratios were robust to adjustment for demographics factors. Estimates did not meaningfully differ when comparing different IDD‐types. Conclusions A greater porportion of infants born to mothers with IDD who were covered by Medicaid had poor outcomes compared to other infants. Prevalence of poor infant outcomes was greater for mothers with IDD even after accounting for demographic differences. It is imperative to understand why infants of mothers with IDD are at greater risk so interventions and management can be developed.
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