Assessing the accuracy of race-and-ethnicity data in the Outcome and Assessment Information Set

BACKGROUND

Limitations in the quality of race-and-ethnicity information in Medicare's data systems constrain efforts to assess disparities in care among older Americans. Using demographic information from standardized patient assessments may be an efficient way to enhance the accuracy and completeness of race-and-ethnicity information in Medicare's data systems, but it is critical to first establish the accuracy of these data as they may be prone to inaccurate observer-reported or third-party-based information. This study evaluates the accuracy of patient-level race-and-ethnicity information included in the Outcome and Assessment Information Set (OASIS) submitted by home health agencies.

METHODS

We compared 2017-2022 OASIS-D race-and-ethnicity data to gold-standard self-reported information from the Medicare Consumer Assessment of Healthcare Providers and Systems® survey in a matched sample of 304,804 people with Medicare coverage. We also compared OASIS data to indirect estimates of race-and-ethnicity generated using the Medicare Bayesian Improved Surname and Geocoding (MBISG) 2.1.1 method and to existing Centers for Medicare & Medicaid Services (CMS) administrative records.

RESULTS

Compared with existing CMS administrative data, OASIS data are far more accurate for Hispanic, Asian American and Native Hawaiian or other Pacific Islander, and White race-and-ethnicity; slightly less accurate for American Indian or Alaska Native race-and-ethnicity; and similarly accurate for Black race-and-ethnicity. However, MBISG 2.1.1 accuracy exceeds that of both OASIS and CMS administrative data for every racial-and-ethnic category. Patterns of inconsistent reporting of racial-and-ethnic information among people for whom there were multiple observations in the OASIS and Consumer Assessment of Healthcare Providers and Systems (CAHPS) datasets suggest that some of the inaccuracies in OASIS data may result from observation-based reporting that lessens correspondence with self-reported data.

CONCLUSIONS

When health record data on race-and-ethnicity includes observer-reported information, it can be less accurate than both true self-report and a high-performing imputation approach. Efforts are needed to encourage collection of true self-reported data and explicit record-level data on the source of race-and-ethnicity information.

"Pick a Plan and Roll the Dice": A qualitative study of consumer experiences selecting a health plan in the non-group market

Background

For consumers without access to employer-sponsored or public insurance, health plan choices in the non-group (individual) insurance market that do not meet consumer needs have the potential for negative downstream implications for health and financial well-being.

Objective

This qualitative interview study sought to understand consumers' experiences and challenges with choosing a non-group health plan, among those who later had negative experiences with the plan they chose.

Methods

We conducted semi-structured telephone interviews with a purposive sample of 36 participants from a large regional health insurance carrier in three states who enrolled in non-group plans in 2017 (21 in Affordable Care Act (ACA) Marketplace plans and 15 enrolled off-Marketplace). Participants were included if they reported negative experiences using their plan after enrollment, such as higher-than-expected medical costs. Interviews explored challenges choosing a plan; information needed for choosing; usefulness of available tools; and preferred format for interventions to improve plan choice experiences. We analyzed interview transcripts using thematic content analysis.

Results

Study participants reported experiencing substantial challenges to choosing an insurance plan. Key barriers included understanding insurance terms, finding relevant information, and making comparisons across plans. Participants valued the ability to make comparisons across carriers when using the Marketplace websites but were less satisfied with customer service. Suggestions for improvement included greater standardization of plans and language and availability of customized one-on-one assistance.

Conclusion

Findings from this study suggest that health plan selection in the non-group market presents challenges to consumers that may be addressed through enrollment assistance and improved presentation of information. Personalized assistance to find and choose coverage may lead to plan choices that better meet consumer needs and increase confidence choosing a plan in subsequent enrollment periods.

Annual Variation in 30-Day Risk-Adjusted Readmission Rates in U.S. Children's Hospitals

OBJECTIVE

Reducing pediatric readmissions has become a national priority; however, the use of readmission rates as a quality metric remains controversial. The goal of this study was to examine short-term stability and long-term changes in hospital readmission rates.

METHODS

Data from the Pediatric Health Information System were used to compare annual 30-day risk-adjusted readmission rates (RARRs) in 47 US children's hospitals from 2016 to 2017 (short-term) and 2016 to 2019 (long-term). Pearson correlation coefficients and weighted Cohen's Kappa statistics were used to measure correlation and agreement across years for hospital-level RARRs and performance quartiles.

RESULTS

Median (IQR) 30-day RARRs remained stable from 7.7% (7.0-8.3) in 2016 to 7.6% (7.0-8.1) in 2019. Individual hospital RARRs in 2016 were strongly correlated with the same hospital's 2017 rate (R2 = 0.89 [95% confidence interval (CI) 0.80-0.94]) and moderately correlated with those in 2019 (R2 = 0.49 [95%CI 0.23-0.68]). Short-term RARRs (2016 vs 2017) were more highly correlated for medical conditions than surgical conditions, but correlations between long-term medical and surgical RARRs (2016 vs 2019) were similar. Agreement between RARRs was higher when comparing short-term changes (0.73 [95%CI 0.59-0.86]) than long-term changes (0.45 [95%CI 0.27-0.63]). From 2016 to 2019, RARRs increased by ≥1% in 7 (15%) hospitals and decreased by ≥1% in 6 (13%) hospitals. Only 7 (15%) hospitals experienced reductions in RARRs over the short and long-term.

CONCLUSIONS

Hospital-level performance on RARRs remained stable with high agreement over the short-term suggesting stability of readmission measures. There was little evidence of sustained improvement in hospital-level performance over multiple years.

Racial and Ethnic Differences in Insurer Classification of Nonemergent Pediatric Emergency Department Visits

Importance

Government and commercial health insurers have recently enacted policies to discourage nonemergent emergency department (ED) visits by reducing or denying claims for such visits using retrospective claims algorithms. Low-income Black and Hispanic pediatric patients often experience worse access to primary care services necessary for preventing some ED visits, raising concerns about the uneven impact of these policies.

Objective

To estimate potential racial and ethnic disparities in outcomes of Medicaid policies for reducing ED professional reimbursement based on a retrospective diagnosis-based claims algorithm.

Design, Setting, and Participants

This simulation study used a retrospective cohort of pediatric ED visits (aged 0-18 years) for Medicaid-insured children and adolescents appearing in the Market Scan Medicaid database between January 1, 2016, and December 31, 2019. Visits missing date of birth, race and ethnicity, professional claims data, and Current Procedural Terminology codes of billing level of complexity were excluded, as were visits that result in admission. Data were analyzed from October 2021 to June 2022.

Main Outcomes and Measures

Proportion of ED visits algorithmically classified as nonemergent and simulated per-visit professional reimbursement after applying a current reimbursement reduction policy for potentially nonemergent ED visits. Rates were calculated overall and compared by race and ethnicity.

Results

The sample included 8 471 386 unique ED visits (43.0% by patients aged 4-12 years; 39.6% Black, 7.7% Hispanic, and 48.7% White), of which 47.7% were algorithmically identified as potentially nonemergent and subject to reimbursement reduction, resulting in a 37% reduction in ED professional reimbursement across the study cohort. More visits by Black (50.3%) and Hispanic (49.0%) children were algorithmically identified as nonemergent when compared with visits by White children (45.3%; P < .001). Modeling the impact of the reimbursement reductions across the cohort resulted in expected per-visit reimbursement that was 6% lower for visits by Black children and 3% lower for visits by Hispanic children relative to visits by White children.

Conclusions and Relevance

In this simulation study of over 8 million unique ED visits, algorithmic approaches for classifying pediatric ED visits that used diagnosis codes identified proportionately more visits by Black and Hispanic children as nonemergent. Insurers applying financial adjustments based on these algorithmic outputs risk creating uneven reimbursement policies across racial and ethnic groups.

Measuring health disparities using a continuous social risk factor

OBJECTIVE

To propose and evaluate a novel approach for measuring hospital-level disparities according to the effect of a continuous, polysocial risk factor on those outcomes.

STUDY SETTING

Our cohort consisted of Medicare Fee-for-Service (FFS) patients 65 years and older admitted to acute care hospitals for one of six common conditions or procedures. Medicare administrative claims data for six hospital readmission measures including hospitalizations from July 2015 to June 2018 were used.

STUDY DESIGN

We adapted existing methodologies that were developed to report hospital-level disparities using dichotomous social risk factors (SRFs). The existing methods report disparities within and across hospitals; we developed and tested modified approaches for both methods using the Agency for Healthcare Research and Quality Socioeconomic Status Index. We applied the adapted methodologies to six 30-day hospital readmission measures included in the Centers for Medicare & Medicaid Services Hospital Readmissions Reduction Program measures. We compared the within- and across-hospital results for each to those obtained from using the original methods and dichotomizing the AHRQ SES Index into "low" and "high" scores.

DATA COLLECTION

We used Medicare FFS administrative claims data linked to U.S. Census data.

PRINCIPAL FINDINGS

For all six readmission measures we find that, when compared with the existing methods, the methods for continuous SRFs provide disparity results for more facilities though across a narrower range of values. Measures of disparity based on this approach are moderately to highly correlated with those based on a dichotomous version of the same risk factor, while reflecting a fuller spectrum of risk. This approach represents an opportunity for detection of provider-level results that more closely align with underlying social risk.

CONCLUSION

We have demonstrated the feasibility and utility of estimating hospital disparities of care using a continuous, polysocial risk factor. This approach expands the potential for reporting hospital-level disparities while better accounting for the multifactorial nature of social risk on hospital outcomes.

Food Insecurity Was Associated With Greater Family Health Care Expenditures In The US, 2016-17

Food insecurity has been associated with the health care expenditures of individuals, but it can affect the entire family. Evaluating the relationship between food insecurity and family expenditures provides a better understanding of the financial implications of food insecurity interventions. Our primary objective was to evaluate the association between food insecurity in one year (2016) and family health care expenditures-for all members, for children only, and for adults only-in the next year (2017). We also evaluated whether this association varied across types of insurance coverage within families: all private, all public, or mixed (including uninsured). Using nationally representative data, we found that food-insecure families had 20 percent greater total health care expenditures than food-secure families, for an annual difference of $2,456. Food insecurity was associated with greater expenditures across all family insurance patterns, including the 19.1 percent of families with mixed coverage. Our findings suggest that in families with mixed coverage, positive impacts of food insecurity interventions on health care use may accrue to family members other than the targeted beneficiaries and those who have different insurance, benefiting the entire family but potentially discouraging investments on the part of any one payer.

The Role of Social Determinants of Health in the Use of Telemedicine for Asthma in Children

Asthma is the most common chronic health condition among children in the United States. The adverse impacts of social determinants of health often manifest in unmet health-related social needs, potentially contributing to worse asthma outcomes. With the onset and rapid spread of coronavirus disease 2019 (COVID-19) and the identification of asthma as a potential risk factor for more severe disease, our asthma program quickly pivoted to a remote-access telemedicine asthma population management platform to best meet the needs of our most at-risk patients. Our practice provides care to a large proportion of Black and Latino/a/e children in urban areas insured by the State Medicaid Program and impacted by unmet social needs. As we pivoted to telemedicine, we consistently reached a greater number of patients and families than prepandemic and observed decreased emergency department visits and hospitalizations. About 1 in 5 families received resource touch points spanning categories of transportation, food and supplies, clothing, utilities, and rent. Overall, families reported positive experiences with telemedicine, including the ability to connect remotely with our social work and resource teams. Telemedicine may be an effective strategy for addressing both the medical and the social needs of children with asthma at risk for worse outcomes.

Variation in Condition-Specific Readmission Rates Across US Children's Hospitals

OBJECTIVE

Despite extensive efforts, overall readmission rates at US children's hospitals have not materially declined over the past decade, raising questions about how to direct future efforts. Using measures of prevalence and performance variation we describe readmission rates by condition and identify priority conditions for future intervention.

METHODS

Retrospective cohort study of 49 US children's hospitals in the Pediatric Health Information System in 2017. Conditions were classified using All Patients Refined Diagnosis Related Groups. 30-day unadjusted and risk-adjusted readmission rates were calculated for each hospital/condition using the Pediatric All Cause Readmission measure. We ranked the highest volume conditions by rate variation (RV, interquartile range divided by the median) for each condition across hospitals.

RESULTS

The sample included 811,434 index hospitalizations with 50,196 (6.2%) 30-day readmissions. The RV across hospitals/conditions was between 0 and 2.8 (median = 0.7). Common reasons for admission had low RVs across hospitals, for example, bronchiolitis (readmission rate = 5.6%, RV = 0.4), seizure (readmission rate = 6.6%, RV = 0.3), and asthma (readmission rate = 3.1%, RV = 0.4). We identified 33 conditions with high variation in readmission rates across hospitals, which accounted for 18% of all discharges and 11% of all pediatric readmissions. These conditions may serve as candidates for future readmission reduction activities.

CONCLUSIONS

Many common childhood conditions have little variation in readmission rates across children's hospitals, suggesting limited future improvement opportunities. Conditions with high rate variation may provide opportunities for quality improvement; however, these conditions account for a relatively small share of total discharges suggesting modest potential impacts on national rates.

Analysis of Racial and Ethnic Diversity of Population Served and Imaging Used in US Children's Hospital Emergency Departments

Importance

Lower rates of diagnostic imaging have been observed among Black children compared with White children in pediatric emergency departments. Although the racial composition of the pediatric population served by each hospital differs, it is unclear whether this is associated with overall imaging rates at the hospital level, and in particular how it may be associated with the difference in imaging rates between Black and White children at a given hospital.

Objective

To examine the association between the diversity of the pediatric population seen at each pediatric ED and variation in diagnostic imaging.

Design, Setting, and Participants

Cross-sectional analysis of ED visits by patients younger than 18 years at 38 children's hospitals from January 1, 2016, through December 31, 2019, using data from the Pediatric Health Information System. Data were analyzed from April to September 2021.

Exposures

Proportion of patients from minoritized groups cared for at each hospital.

Main Outcomes and Measures

The primary outcome was receipt of an imaging test defined as radiography, ultrasonography, computed tomography, or magnetic resonance imaging; adjusted odds ratios (aORs) were calculated to measure differences in imaging by race and ethnicity by hospital, and the correlation between the proportion of patients from minoritized groups cared for at each hospital and the aOR for receipt of diagnostic imaging by race and ethnicity was examined.

Results

There were 12 310 344 ED visits (3 477 674 [28.3%] among Hispanic patients; 3 212 915 [26.1%] among non-Hispanic Black patients; 4 415 747 [35.9%] among non-Hispanic White patients; 6 487 660 [52.7%] among female patients) by 5 883 664 pediatric patients (mean [SD] age, 5.84 [5.23] years) to the 38 hospitals during the study period, of which 3 527 866 visits (28.7%) involved at least 1 diagnostic imaging test. Diagnostic imaging was performed in 1 508 382 visits (34.2%) for non-Hispanic White children, 790 961 (24.6%) for non-Hispanic Black children, and 907 222 (26.1%) for Hispanic children (P < .001). Non-Hispanic Black patients were consistently less likely to receive diagnostic imaging than non-Hispanic White patients at each hospital, and for all imaging modalities. There was a significant correlation between the proportion of patients from minoritized groups cared for at the hospital and greater imaging difference between non-Hispanic White and non-Hispanic Black patients (correlation coefficient, -0.37; 95% CI, -0.62 to -0.07; P = .02).

Conclusions and Relevance

In this cross-sectional study, hospitals with a higher percentage of pediatric patients from minoritized groups had larger differences in imaging between non-Hispanic Black and non-Hispanic White patients, with non-Hispanic White patients consistently more likely to receive diagnostic imaging. These findings emphasize the urgent need for interventions at the hospital level to improve equity in imaging in pediatric emergency medicine.

Supplemental Nutrition Assistance Program participation and health care expenditures in children

BACKGROUND

The Supplemental Nutrition Assistance Program (SNAP) has well-established positive impacts on child health outcomes, including increased birth weight and decreased likelihood of underweight status. Studies in adult populations suggest that SNAP is associated with lower health care costs, although less is known in children.

METHODS

Retrospective analysis of U.S. children (age <18 years) living in low-income households (< 200% of the federal poverty level) in the 2013-2017 Medical Expenditure Panel Survey. We used multivariable regression, adjusting for sociodemographic and clinical covariates, to model the effect of continuous SNAP enrollment on health expenditures as compared to non-enrollees at 12 and 24 months.

RESULTS

The sample included 5,626 children, of whom 49.2% consistently received SNAP for the entire two-year survey period. Compared with SNAP non-recipients, SNAP-recipient households more often had incomes below 100% FPL (78.3% vs 37.9%), and children in SNAP-recipient households were more often publicly insured (94.9% vs 64.5%). Unadjusted expenditures were lower for children in SNAP-recipient households at 12 ($1222 vs $1603) and 24 months ($2447 vs $3009). However, when adjusting for sociodemographic and clinical differences, no statistically significant differences in health care expenditures, including emergency department, inpatient, outpatient, and prescription costs, were identified.

CONCLUSION

SNAP participant children experience heightened social hardships across multiple domains. There were no differences in short term health care costs based on SNAP enrollment when accounting for differences in sociodemographic and clinical factors. Despite demonstrated child health benefits, we found that sustained enrollment in SNAP over a two-year period did not generate significant short- term health care cost reductions. Our findings suggest that although SNAP is intended to act as a benefit towards the health and well-being of its recipients, unlike among adults, it may not reduce health care costs among children.

Promoting Child Health Equity Through Medicaid Innovation

Black, Latino/a/e, American Indian, and Alaska Native children often receive lower quality health care than White children. As the predominant health insurer for medically underserved populations, Medicaid plays a critical role in advancing socioeconomic and racial health equity. In this article, we focus on structural barriers to health equity in the Medicaid program and potential steps for improving long-standing socioeconomic and racial health inequities through programmatic innovation. We identify opportunities for expanding care models for holistically addressing the social determinants of health, aligning clinical care delivery around health equity principles, diversifying the clinical workforce, and promoting meaningful and consistent provider participation in Medicaid. Practitioners and policy makers can start to undertake many of these steps today to set the stage for more sweeping reforms that can help achieve national health equity goals for children. [Pediatr Ann. 2022;51(3):e118-e122.].

Affordability and Access Challenges Among US Subscribers to Nongroup Insurance Plans

This cohort study assesses cost-related experiences in non-group plans purchased on or off Marketplace and variation by Marketplace enrollment, decision support use, and other characteristics.

Understanding Consumer Experiences and Insurance Outcomes Following Plan Disenrollment in the Nongroup Insurance Market

Disenrollment from health plans purchased on Affordable Care Act (ACA) Marketplaces is frequent; little is known whether disenrollment from off-Marketplace plans is as common or about the experiences and consequences of disenrollment. Using longitudinal administrative data on 2017-2018 nongroup plan enrollment linked with survey data, we analyze plan disenrollment in one regional insurance carrier servicing three states. Overall, 71% of enrollees disenrolled from their 2017 plan. Disenrollment was associated with purchasing through an ACA Marketplace, the carrier making significant changes to an enrollee's plan benefit design, being healthier, being younger, and paying a higher premium for their 2017 plan in 2018. Experiencing financial burden or poor access to preferred providers was not associated with disenrollment. Most disenrollees (93.2%) enrolled in other coverage, often at a lower premium, but lacked confidence that they could afford needed care. These results can inform policy to support enrollees through coverage transitions and foster stability in the nongroup market.

Clinical and public policy interventions to address food insecurity among children

PURPOSE OF REVIEW

This article describes the impacts of food insecurity (FI) on child health, outlines clinical and public policy interventions to mitigate FI in children, and defines new paradigms in population health to ameliorate the harmful effects of FI in children.

RECENT FINDINGS

Rates of FI among children have dramatically increased with the onset of the COVID-19 pandemic, with particular adverse impact on low-income children. Population health innovations in screening, referral, and social service integration offer new opportunities to address FI.

SUMMARY

Despite advances in clinical practice and public policy, FI remains a persistent issue for many US children. Clinicians and policymakers have opportunities to leverage clinical and community-based integration to improve service delivery opportunities to ameliorate childhood hunger and racial and socioeconomic inequity in the United States.

Factors Associated With Disparities in Hospital Readmission Rates Among US Adults Dually Eligible for Medicare and Medicaid

Importance

Low-income older adults who are dually eligible (DE) for Medicare and Medicaid often experience worse outcomes following hospitalization. Among other federal policies aimed at improving health for DE patients, Medicare has recently begun reporting disparities in within-hospital readmissions. The degree to which disparities for DE patients are owing to differences in community-level factors or, conversely, are amenable to hospital quality improvement, remains heavily debated.

Objective

To examine the extent to which within-hospital disparities in 30-day readmission rates for DE patients are ameliorated by state- and community-level factors.

Design Setting and Participants

In this retrospective cohort study, Centers for Medicare & Medicaid Services (CMS) Disparity Methods were used to calculate within-hospital disparities in 30-day risk-adjusted readmission rates for DE vs non-DE patients in US hospitals participating in Medicare. All analyses were performed in February and March 2019. The study included Medicare patients (aged ≥65 years) hospitalized for acute myocardial infarction (AMI), heart failure (HF), or pneumonia in 2014 to 2017.

Main Outcomes and Measures

Within-hospital disparities, as measured by the rate difference (RD) in 30-day readmission between DE vs non-DE patients following admission for AMI, HF, or pneumonia; variance across hospitals; and correlation of hospital RDs with and without adjustment for state Medicaid eligibility policies and community-level factors.

Results

The final sample included 475 444 patients admitted for AMI, 898 395 for HF, and 1 214 282 for pneumonia, of whom 13.2%, 17.4%, and 23.0% were DE patients, respectively. Dually eligible patients had higher 30-day readmission rates relative to non-DE patients (RD >0) in 99.0% (AMI), 99.4% (HF), and 97.5% (pneumonia) of US hospitals. Across hospitals, the mean (IQR) RD between DE vs non-DE was 1.00% (0.87%-1.10%) for AMI, 0.82% (0.73%-0.96%) for HF, and 0.53% (0.37%-0.71%) for pneumonia. The mean (IQR) RD after adjustment for community-level factors was 0.87% (0.73%-0.97%) for AMI, 0.67% (0.57%-0.80%) for HF, and 0.42% (0.29%-0.57%) for pneumonia. Relative hospital rankings of corresponding within-hospital disparities before and after community-level adjustment were highly correlated (Pearson coefficient, 0.98).

Conclusions and Relevance

In this cohort study, within-hospital disparities in 30-day readmission for DE patients were modestly associated with differences in state Medicaid policies and community-level factors. This suggests that remaining variation in these disparities should be the focus of hospital efforts to improve the quality of care transitions at discharge for DE patients in efforts to advance equity.

In New England, Partisan Differences In ACA Marketplace Participation And Potential Financial Harm

Political orientation can be a powerful motivator of certain health care decisions. This study examines how political orientation was associated with decisions to use the Affordable Care Act Marketplaces to enroll in nongroup health insurance plans and whether it was also associated with adverse financial consequences. We used administrative records and surveys of nongroup Marketplace enrollees from a large insurer in New England. Enrollees were categorized as Republican, Democrat, or independent through self-identification or were assigned to one of the political parties after responding to a political preference question. Republican enrollees were less likely than Democratic enrollees of comparable subsidy eligibility to enroll through the Marketplaces and receive subsidies. Among income-eligible enrollees, Republican subscribers received $66 per month less in premium subsidies than Democratic subscribers, equivalent to roughly $800 per year. However, this result varied by subgroups in the parties, and our results suggest that party effects on decision making may inversely relate to the magnitude of the financial consequence. Navigating the ongoing political polarization in the United States requires optimizing public policies, as well as the associated education and outreach, to ensure maximal efficacy regardless of political orientation.

Association of Clinical Guidelines and Decision Support with Computed Tomography Use in Pediatric Mild Traumatic Brain Injury

OBJECTIVE

To examine whether the presence of clinical guidelines and clinical decision support (CDS) for mild traumatic brain injury (mTBI) are associated with lower use of head computed tomography (CT).

STUDY DESIGN

We conducted a cross-sectional study of 45 pediatric emergency departments (EDs) in the Pediatric Hospital Information System from 2015 through 2019. We included children discharged with mTBI and surveyed ED clinical directors to ascertain the presence and implementation year of clinical guidelines and CDS. The association of clinical guidelines and CDS with CT use was assessed, adjusting for relevant confounders. As secondary outcomes, we evaluated ED length of stay and rates of 3-day ED revisits and admissions after revisits.

RESULTS

There were 216 789 children discharged with mTBI, and CT was performed during 20.3% (44 114/216 789) of ED visits. Adjusted hospital-specific CT rates ranged from 11.8% to 34.7% (median 20.5%, IQR 17.3%, 24.3%). Of the 45 EDs, 17 (37.8%) had a clinical guideline, 9 (20.0%) had CDS, and 19 (42.2%) had neither. Compared with EDs with neither a clinical guideline nor CDS, visits to EDs with CDS (aOR 0.52 [0.47, 0.58]) or a clinical guideline (aOR 0.83 [0.78, 0.89]) had lower odds of including a CT for mTBI. ED length of stay and revisit rates did not differ based on the presence of a clinical guideline or CDS.

CONCLUSIONS

Clinical guidelines for mTBI, and particularly CDS, were associated with lower rates of head CT use without adverse clinical outcomes.

Controller Medication Use and Exacerbations for Children and Adults With Asthma in High-Deductible Health Plans

IMPORTANCE

High-deductible health plans (HDHPs) are increasingly common and associated with decreased medication use in some adult populations. How children are affected is less certain.

OBJECTIVE

To examine the association between HDHP enrollment and asthma controller medication use and exacerbations.

DESIGN, SETTING, AND PARTICIPANTS

For this longitudinal cohort study with a difference-in-differences design, data were obtained from a large, national, commercial (and Medicare Advantage) administrative claims database between January 1, 2002, and December 31, 2014. Children aged 4 to 17 years and adults aged 18 to 64 years with persistent asthma who switched from traditional plans to HDHPs or remained in traditional plans (control group) by employer choice during a 24-month period were identified. A coarsened exact matching technique was used to balance the groups on characteristics including employer and enrollee propensity to have HDHPs. In most HDHPs, asthma medications were exempt from the deductible and subject to copayments. Statistical analyses were conducted from August 13, 2019, to January 19, 2021.

EXPOSURE

Employer-mandated HDHP transition.

MAIN OUTCOMES AND MEASURES

Thirty-day fill rates and adherence (based on proportion of days covered [PDC]) were measured for asthma controller medications (inhaled corticosteroid [ICS], leukotriene inhibitors, and ICS long-acting β-agonists [ICS-LABAs]). Asthma exacerbations were measured by rates of oral corticosteroid bursts and asthma-related emergency department visits among controller medication users.

RESULTS

The HDHP group included 7275 children (mean [SD] age, 10.8 [3.3] years; 4402 boys [60.5%]; and 5172 non-Hispanic White children [71.1%]) and 17 614 adults (mean [SD] age, 41.1 [13.4] years; 10 464 women [59.4%]; and 12 548 non-Hispanic White adults [71.2%]). The matched control group included 45 549 children and 114 141 adults. Compared with controls, children switching to HDHPs experienced significant absolute decreases in annual 30-day fills only for ICS-LABA medications (absolute change, -0.04; 95% CI, -0.07 to -0.01). Adults switching to HDHPs did not have significant reductions in 30-day fills for any controllers. There were no statistically significant differences in PDC, oral steroid bursts, or asthma-related emergency department visits for children or adults. For the 9.9% of HDHP enrollees with health savings account-eligible HDHPs that subjected medications to the deductible, there was a significant absolute decrease in PDC for ICS-LABA compared with controls (-4.8%; 95% CI, -7.7% to -1.9%).

CONCLUSIONS AND RELEVANCE

This cohort study found that in a population where medications were exempt from the deductible for most enrollees, HDHP enrollment was associated with minimal or no reductions in controller medication use for children and adults and no change in asthma exacerbations. These findings suggest a potential benefit from exempting asthma medications from the deductible in HDHPs.

Racial and Ethnic Differences in Managed Care Enrollment Among US Children

This survey study uses data from the 2018 Medical Expenditure Panel Survey Household Component to compare rates of health maintenance organization (HMO) enrollment, by race and ethnicity, for children with commercial and public coverage.

Racial and Ethnic Differences in Emergency Department Diagnostic Imaging at US Children's Hospitals, 2016-2019

IMPORTANCE

Diagnostic imaging is frequently performed as part of the emergency department (ED) evaluation of children. Whether imaging patterns differ by race and ethnicity is unknown.

OBJECTIVE

To evaluate racial and ethnic differences in the performance of common ED imaging studies and to examine patterns across diagnoses.

DESIGN, SETTING, AND PARTICIPANTS

This cross-sectional study evaluated visits by patients younger than 18 years to 44 US children's hospital EDs from January 1, 2016, through December 31, 2019.

EXPOSURES

Non-Hispanic Black and Hispanic compared with non-Hispanic White race/ethnicity.

MAIN OUTCOMES AND MEASURES

The primary outcome was the proportion of visits for each race/ethnicity group with at least 1 diagnostic imaging study, defined as plain radiography, computed tomography, ultrasonography, and magnetic resonance imaging. The major diagnostic categories classification system was used to examine race/ethnicity differences in imaging rates by diagnoses.

RESULTS

A total of 13 087 522 visits by 6 230 911 children and adolescents (mean [SD] age, 5.8 [5.2] years; 52.7% male) occurred during the study period. Diagnostic imaging was performed during 3 689 163 visits (28.2%). Imaging was performed in 33.5% of visits by non-Hispanic White patients compared with 24.1% of visits by non-Hispanic Black patients (odds ratio [OR], 0.60; 95% CI, 0.60-0.60) and 26.1% of visits by Hispanic patients (OR, 0.66; 95% CI, 0.66-0.67). Adjusting for confounders, visits by non-Hispanic Black (adjusted OR, 0.82; 95% CI, 0.82-0.83) and Hispanic (adjusted OR, 0.87; 95% CI, 0.87-0.87) patients were less likely to include any imaging study compared with visits by non-Hispanic White patients. Limiting the analysis to only visits by nonhospitalized patients, the adjusted OR for imaging was 0.79 (95% CI, 0.79-0.80) for visits by non-Hispanic Black patients and 0.84 (95% CI, 0.84-0.85) for visits by Hispanic patients. Results were consistent in analyses stratified by public and private insurance groups and did not materially differ by diagnostic category.

CONCLUSIONS AND RELEVANCE

In this study, non-Hispanic Black and Hispanic children were less likely to receive diagnostic imaging during ED visits compared with non-Hispanic White children. Further investigation is needed to understand and mitigate these potential disparities in health care delivery and to evaluate the effect of these differential imaging patterns on patient outcomes.

Changes in Health Care-Related Financial Burden for US Families With Children Associated With the Affordable Care Act

IMPORTANCE

The Affordable Care Act (ACA) sought to improve access and affordability of health insurance. Although most ACA policies targeted childless adults, the extent to which these policies also impacted families with children remains unclear.

OBJECTIVE

To examine changes in health care-related financial burden for US families with children before and after the ACA was implemented based on income eligibility for ACA policies.

DESIGN, SETTING, AND PARTICIPANTS

Data used for this cohort study were obtained from the 2000-2017 Medical Expenditure Panel Survey, a nationally representative, population-based survey. Multivariable regression with a difference-in-differences estimator was used to examine changes in family financial burden before and after ACA implementation according to income-based ACA eligibility groups (≤138% [lowest-income], 139%-250% [low-income], 251%-400% [middle-income], and >400% [high-income] federal poverty level). The cohort included 92 165 families with 1 or more children (age ≤18 years) and 1 or more adult parents/guardians.

EXPOSURES

Income-based eligibility groups during post-ACA years (calendar years 2014-2017) vs pre-ACA years (calendar years 2000-2013).

MAIN OUTCOMES AND MEASURES

Family annual out-of-pocket (OOP) health care and premium cost burden relative to income. High OOP burden was determined based on a previously validated algorithm with relative cost thresholds that vary across incomes, and extreme OOP burden was defined as costs exceeding 10% of income. Premiums exceeding 9.5% of income were classified as burdensome and premiums relative to median household income defined an unaffordability index.

RESULTS

Compared with high-income families who experienced a lesser change post-ACA implementation (high OOP burden, 1.1% pre-ACA vs 0.9% post-ACA), the lowest-income families saw the greatest reduction in high OOP burden (35.6% pre-ACA vs 23.7% post-ACA; difference-in-differences: -11.4%; 95% CI, -13.2% to -9.5%) followed by low-income families (24.6% pre-ACA vs 17.3% post-ACA, difference-in-differences: -6.8%; 95% CI, -8.7% to -4.9%) and middle-income families (6.1% pre-ACA vs 4.6% post-ACA, difference-in-differences: -1.2%; 95% CI, -2.3% to -0.01%). Although premiums rose for all groups, premium unaffordability was the least exacerbated for the lowest-, low-, and middle-income families compared with higher-income families.

CONCLUSIONS AND RELEVANCE

The findings of this study suggest that low- and middle-income families with children who were eligible for ACA Medicaid expansions and Marketplace subsidies experienced greater reductions in health care-related financial burden after the ACA was implemented compared with families with higher incomes. However, despite ACA policies, many low- and middle-income families with children appear to continue to face considerable financial burden from premiums and OOP costs.

Hospital Observation Status and Readmission Rates

BACKGROUND

In several states, payers penalize hospitals when an inpatient readmission follows an inpatient stay. Observation stays are typically excluded from readmission calculations. Previous studies suggest inconsistent use of observation designations across hospitals. We sought to describe variation in observation stays and examine the impact of inclusion of observation stays on readmission metrics.

METHODS

We conducted a retrospective cohort study of hospitalizations at 50 hospitals contributing to the Pediatric Health Information System database from January 1, 2018, to December 31, 2018. We examined prevalence of observation use across hospitals and described changes to inpatient readmission rates with higher observation use. We described 30-day inpatient-only readmission rates and ranked hospitals against peer institutions. Finally, we included observation encounters into the calculation of readmission rates and evaluated hospitals' change in readmission ranking.

RESULTS

Most hospitals (n = 44; 88%) used observation status, with high variation in use across hospitals (0%-53%). Readmission rate after index inpatient stay (6.8%) was higher than readmission after an index observation stay (4.4%), and higher observation use by hospital was associated with higher inpatient-only readmission rates. When compared with peers, hospital readmission rank changed with observation inclusion (60% moving at least 1 quintile).

CONCLUSIONS

The use of observation status is variable among children's hospitals. Hospitals that more liberally apply observation status perform worse on the current inpatient-to-inpatient readmission metric, and inclusion of observation stays in the calculation of readmission rates significantly affected hospital performance compared with peer institutions. Consideration should be given to include all admission types for readmission rate calculation.

Trends in Use of Advanced Imaging in Pediatric Emergency Departments, 2009-2018

Importance

There is increased awareness of radiation risks from computed tomography (CT) in pediatric patients. In emergency departments (EDs), evidence-based guidelines, improvements in imaging technology, and availability of nonradiating modalities have potentially reduced CT use.

Objective

To evaluate changes over time and hospital variation in advanced imaging use.

Design, Setting, and Participants

This cross-sectional study assessed 26 082 062 ED visits by children younger than 18 years from the Pediatric Health Information System administrative database from January 1, 2009, through December 31, 2018.

Exposures

Imaging.

Main Outcomes and Measures

The primary outcome was the change in CT, ultrasonography, and magnetic resonance imaging (MRI) rates from January 1, 2009, to December 31, 2018. Imaging for specific diagnoses was examined using all patient-refined diagnosis related groups. Secondary outcomes were hospital admission and 3-day ED revisit rates and ED length of stay.

Results

There were a total of 26 082 062 visits by 9 868 406 children (mean [SD] age, 5.59 [5.15] years; 13 842 567 [53.1%] male; 9 273 181 [35.6%] non-Hispanic white) to 32 US pediatric EDs during the 10-year study period, with 1 or more advanced imaging studies used in 1 919 283 encounters (7.4%). The proportion of ED encounters with any advanced imaging increased from 6.4% (95% CI, 6.2%-6.2%) in 2009 to 8.7% (95% CI, 8.7%-8.8%) in 2018. The proportion of ED encounters with CT decreased from 3.9% (95% CI, 3.9%-3.9%) to 2.9% (95% CI, 2.9%-3.0%) (P < .001 for trend), with ultrasonography increased from 2.5% (95% CI, 2.5%-2.6%) to 5.8% (95% CI, 5.8%-5.9%) (P < .001 for trend), and with MRI increased from 0.3% (95% CI, 0.3%-0.4%) to 0.6% (95% CI, 0.6%-0.6%) (P < .001 for trend). The largest decreases in CT rates were for concussion (-23.0%), appendectomy (-14.9%), ventricular shunt procedures (-13.3%), and headaches (-12.4%). Factors associated with increased use of nonradiating imaging modalities included ultrasonography for abdominal pain (20.3%) and appendectomy (42.5%) and MRI for ventricular shunt procedures (17.9%) (P < .001 for trend). Across the study period, EDs varied widely in the use of ultrasonography for appendectomy (median, 57.5%; interquartile range [IQR], 40.4%-69.8%) and MRI (median, 15.8%; IQR, 8.3%-35.1%) and CT (median, 69.5%; IQR, 54.5%-76.4%) for ventricular shunt procedures. Overall, ED length of stay did not change, and hospitalization and 3-day ED revisit rates decreased during the study period.

Conclusions and Relevance

This study found that use of advanced imaging increased from 2009 to 2018. Although CT use decreased, this decrease was accompanied by a greater increase in the use of ultrasonography and MRI. There appears to be substantial variation in practice and a need to standardize imaging practices.

Socioeconomic and Health Characteristics of Families at Risk for Losing Supplemental Nutrition Assistance Program Benefits

This cross-sectional study compares the health, nutritional, and financial vulnerabilities of families at risk for losing extended categorical eligibility for the Supplemental Nutrition Assistance Program (SNAP) with those of families meeting federal eligibility standards.

Progress (?) Toward Reducing Pediatric Readmissions

Many children's hospitals are actively working to reduce readmissions to improve care and avoid financial penalties. We sought to determine if pediatric readmission rates have changed over time. We used data from 66 hospitals in the Inpatient Essentials Database including index hospitalizations from January, 2010 through June, 2016. Seven-day all cause (AC) and potentially preventable readmission (PPR) rates were calculated using 3M PPR software. Total and condition-specific quarterly AC and PPR rates were generated for each hospital and in aggregate. We included 4.52 million hospitalizations across all study years. Readmission rates did not vary over the study period. The median seven-day PPR rate across all quarters was 2.5% (range 2.1%-2.5%); the median seven-day AC rate across all quarters was 5.1% (range 4.3%-5.3%). Readmission rates for individual conditions fluctuated. Despite significant national efforts to reduce pediatric readmissions, both AC and PPR readmission rates have remained unchanged over six years.

Food Insecurity and Health Care Use

BACKGROUND AND OBJECTIVES

Fifteen percent of US children live in households with inadequate food. Children who are food insecure often experience worse physical, emotional, and developmental health outcomes. Authors of previous studies have not examined the quality and cost implications of food insecurity in children.

METHODS

This is a retrospective study of 7959 nationally representative US children (aged 1-17 years) in the 2016 Medical Expenditure Panel Survey. Households with food insecurity were identified by ≥3 positive responses to the 30-day, 10-item US Food Security Survey. Main outcomes were annual health expenditures and quality of care indicators: emergency department (ED) and inpatient use, primary care and specialist visits, routine medical and dental care, patient experience measures, and school absenteeism. Logistic and 2-part regression models were constructed to estimate outcomes conditional on sociodemographic and medical covariates.

RESULTS

Children in households with food insecurity were more often publicly insured and had special needs compared with all other children. In multivariable logistic regression, household food insecurity was associated with significantly higher adjusted odds of an ED (adjusted odds ratio [aOR] = 1.37) or primary care treatment visit (aOR = 1.24) during the year. Household food insecurity was associated with significantly higher school absenteeism (aOR = 1.74) and lower access to care for routine (aOR = 0.55) or illness (aOR = 0.57) care. There were no differences in annual health expenditures, hospitalizations, or receipt of routine medical or dental care.

CONCLUSIONS

Household food insecurity is associated with higher ED use and school absenteeism and lower access to care; however, it was not associated with higher annual health expenditures in children.

Low-Value Diagnostic Imaging Use in the Pediatric Emergency Department in the United States and Canada

IMPORTANCE

Diagnostic imaging overuse in children evaluated in emergency departments (EDs) is a potential target for reducing low-value care. Variation in practice patterns across Canada and the United States stemming from organization of care, payment structures, and medicolegal environments may lead to differences in imaging overuse between countries.

OBJECTIVE

To compare overall and low-value use of diagnostic imaging across pediatric ED visits in Ontario, Canada, and the United States.

DESIGN, SETTING, AND PARTICIPANTS

This study used administrative health databases from 4 pediatric EDs in Ontario and 26 in the United States in calendar years 2006 through 2016. Individuals 18 years and younger who were discharged from the ED, including after visits for diagnoses in which imaging is not routinely recommended (eg, asthma, bronchiolitis, abdominal pain, constipation, concussion, febrile convulsion, seizure, and headache) were included. Data analysis occurred from April 2018 to October 2018.

EXPOSURES

Diagnostic imaging use.

MAIN OUTCOME AND MEASURES

Overall and condition-specific low-value imaging use. Three-day and 7-day rates of hospital admission and those admissions resulting in intensive care, surgery, or in-hospital mortality were assessed as balancing measures.

RESULTS

A total of 1 783 752 visits in Ontario and 21 807 332 visits in the United States were analyzed. Compared with visits in the United States, those in Canada had lower overall use of head computed tomography (Canada, 22 942 [1.3%] vs the United States, 753 270 [3.5%]; P < .001), abdomen computed tomography (5626 [0.3%] vs 211 018 [1.0%]; P < .001), chest radiographic imaging (208 843 [11.7%] vs 3 408 540 [15.6%]; P < .001), and abdominal radiographic imaging (77 147 [4.3%] vs 3 607 141 [16.5%]; P < .001). Low-value imaging use was lower in Canada than the United States for multiple indications, including abdominal radiographic images for constipation (absolute difference, 23.7% [95% CI, 23.2%-24.3%]) and abdominal pain (20.6% [95% CI, 20.3%-21.0%]) and head computed tomographic scans for concussion (22.9% [95% CI, 22.3%-23.4%]). Abdominal computed tomographic use for constipation and abdominal pain, although low overall, were approximately 10-fold higher in the United States (0.1% [95% CI, 0.1%-0.2%] vs 1.2% [95% CI, 1.2%-1.2%]) and abdominal pain (0.8% [95% CI, 0.7%-0.9%] vs 7.0% [95% CI, 6.9%-7.1%]). Rates of 3-day and 7-day post-ED adverse outcomes were similar.

CONCLUSIONS AND RELEVANCE

Low-value imaging rates were lower in pediatric EDs in Ontario compared with the United States, particularly those involving ionizing radiation. Lower use of imaging in Canada was not associated with higher rates of adverse outcomes, suggesting that usage may be safely reduced in the United States.

Well-Child Visits of Medicaid-Insured Children with Medical Complexity

OBJECTIVE

Well-child visits (WCVs) help optimize children's health. We measured annual WCVs for children with medical complexity (CMC) and correlated WCVs with hospitalizations.

STUDY DESIGN

This was a retrospective analysis of 93 121 CMC aged 1-18 years continuously enrolled in 10 state Medicaid programs in the Truven MarketScan Database between 2010 and 2014. CMC had a complex chronic condition or 3 or more chronic conditions of any complexity identified from International Classification of Diseases, Ninth Revision codes, and the use of 1 or more chronic medications. We measured the number of years with 1 or more WCVs. The χ² test and logistic regression were used to assess the relationships of WCV-years with the children's characteristics and hospitalization.

RESULTS

Over 5 years, 13.4% of CMC had 0 WCVs; 17.3% had WCVs in 1 year, 40.8% had WCVs in 2-3 years, and 28.5% had WCVs in 4-5 years. Fewer children received WCVs in 4-5 years when enrolled in Medicaid fee-for-service compared with managed care (20.9% vs 31.5%; P < .001) and when enrolled due to a disability compared with another reason (18.2% vs 32.2%; P < .001). The percentage of CMC hospitalized decreased as the number of years receiving WCV increased (21.5% at 0 years vs 16.9% at 5 years; P < .001). The adjusted odds of hospitalization were higher in CMC with WCVs in 0-4 years compared with CMC with WCVs in all 5 years (OR range across years, 1.1 [95% CI, 1.0-1.2] to 1.3 [95% CI, 1.3-1.4]).

CONCLUSIONS

Most Medicaid-insured CMC do not receive annual WCVs consistently over time. Children with fewer annual WCVs have a higher likelihood of hospitalization. Further investigation is needed to improve the use of WCVs in CMC.

Predicting Low-Resource-Intensity Emergency Department Visits in Children

OBJECTIVES

Interventions to reduce frequent emergency department (ED) use in children are often limited by the inability to predict future risk. We sought to develop a population-based model for predicting Medicaid-insured children at risk for high frequency (HF) of low-resource-intensity (LRI) ED visits.

METHODS

We conducted a retrospective cohort analysis of Medicaid-insured children (aged 1-18 years) included in the MarketScan Medicaid database with ≥1 ED visit in 2013. LRI visits were defined as ED encounters with no laboratory testing, imaging, procedures, or hospitalization; and HF as ≥3 LRI ED visits within 365 days of the initial encounter. A generalized linear regression model was derived and validated using a split-sample approach. Validity testing was conducted examining model performance using 3 alternative definitions of LRI.

RESULTS

Among 743,016 children with ≥1 ED visit in 2013, 5% experienced high-frequency LRI ED use, accounting for 21% of all LRI visits. Prior LRI ED use (2 visits: adjusted odds ratio = 3.5; 95% confidence interval, 3.3, 3.7; and ≥3 visits: adjusted odds ratio = 7.7; 95% confidence interval, 7.3, 8.1) and presence of ≥3 chronic conditions (adjusted odds ratio = 1.7; 95% confidence interval, 1.6, 1.8) were strongly associated with future HF-LRI ED use. A model incorporating patient characteristics and prior ED use predicted future HF-LRI ED utilization with an area under the curve of 0.74.

CONCLUSIONS

Demographic characteristics and patterns of prior ED use can predict future risk of HF-LRI ED use in the following year. Interventions for reducing low-value ED use in these high-risk children should be considered.

Characteristics of Children Enrolled in Medicaid With High-Frequency Emergency Department Use

BACKGROUND AND OBJECTIVES

Some children repeatedly use the emergency department (ED) at high levels. Among Medicaid-insured children with high-frequency ED use in 1 year, we sought to describe the characteristics of children who sustain high-frequency ED use over the following 2 years.

METHODS

Retrospective longitudinal cohort study of 470 449 Medicaid-insured children appearing in the MarketScan Medicaid database, aged 1-16 years, with ≥1 ED discharges in 2012. Children with high ED use in 2012 (≥4 ED discharges) were followed through 2014 to identify characteristics associated with sustained high ED use (≥8 ED discharges in 2013-2014 combined). A generalized linear model was used to identify patient characteristics associated with sustained high ED use.

RESULTS

A total of 39 945 children (8.5%) experienced high ED use in 2012, accounting for 25% of total ED visits in 2012. Sixteen percent of these children experienced sustained high ED use in the following 2 years. Adolescents (adjusted odds ratio [aOR]: 1.4 [95% confidence interval: 1.3-1.5]), disabled children (aOR: 1.3 [95% confidence interval: 1.1-1.5]), and children with 3 or more chronic conditions (aOR: 2.1, [95% confidence interval: 1.9-2.3]) experienced the highest likelihood for sustaining high ED use.

CONCLUSIONS

One in 6 Medicaid-insured children with high ED use in a single year experienced sustained high levels of ED use over the next 2 years. Adolescents and individuals with multiple chronic conditions were most likely to have sustained high rates of ED use. Targeted interventions may be indicated to help reduce ED use among children at high risk.

Potentially Preventable 30-Day Hospital Readmissions at a Children's Hospital

BACKGROUND AND OBJECTIVES

Hospital readmission rates are increasingly used to assess quality. Little is known, however, about potential preventability of readmissions among children. Our objective was to evaluate potential preventability of 30-day readmissions using medical record review and interviews.

METHODS

A cross-sectional study in 305 children (<18 years old) readmitted within 30 days to a freestanding children's hospital between December 2012 and February 2013. Interviews (N = 1459) were conducted with parents/guardians, patients (if ≥13 years old), inpatient clinicians, and primary care providers. Reviewers evaluated medical records, interview summaries, and transcripts, and then rated potential preventability. Multivariate regression analysis was used to identify factors associated with potentially preventable readmission. Adjusted event curves were generated to model days to readmission.

RESULTS

Of readmissions, 29.5% were potentially preventable. Potentially preventable readmissions occurred sooner after discharge than non-potentially preventable readmissions (5 vs 9 median days; P < .001). The odds of a readmission being potentially preventable were greatest when the index admission and readmission were causally related (adjusted odds ratio [AOR]: 2.6; 95% confidence interval [CI]: 1.0-6.8) and when hospital (AOR: 16.3; 95% CI: 5.9-44.8) or patient (AOR: 7.1; 95% CI: 2.5-20.5) factors were identified. Interviews provided new information about the readmission in 31.2% of cases.

CONCLUSIONS

Nearly 30% of 30-day readmissions to a children's hospital may be potentially preventable. Hospital and patient factors are associated with potential preventability and may provide targets for quality improvement efforts. Interviews contribute important information and should be considered when evaluating readmissions.

Characteristics of Rural Children Admitted to Pediatric Hospitals

BACKGROUND AND OBJECTIVES

Delivering high-quality care to children living in rural areas can be challenging. Compared with nonrural children, rural children often experience worse health outcomes. We assessed characteristics and hospitalizations of rural children admitted to US children's hospitals in 2012.

METHODS

Retrospective cohort analysis of 672190 admissions between January 1, 2012, and December 31, 2012, to 41 children's hospitals in the Pediatric Health Information System database. ZIP codes were used to assess the patients' rurality (by using Rural-Urban Community Areas classification), residence in a Health Professional Shortage Area, and family income. Multivariable regression was used to compare patient characteristics and hospital utilization between rural and nonrural children.

RESULTS

Rural children accounted for 12% of all admissions (n = 81 360) to the children's hospitals. Compared with nonrural children, rural children lived farther from the hospital (median [interquartile range]: 68 [48-104] vs 12 [6-24] miles) and more often resided in low-income ZIP codes (53% vs 24%) and Health Professional Shortage Areas (20% vs 4%) (P < .001 for all). Rural children had a higher prevalence of complex chronic conditions (44% vs 37%; P < .001) and medical technology assistance (15% vs 12%; P < .001). In multivariable analysis, rural children experienced higher inpatient costs (mean: $8507 vs $7814; P < .001) and higher odds of 30-day readmission (odds ratio: 1.1; 95% confidence interval: 1.0-1.1; P < .001).

CONCLUSIONS

Rural children hospitalized at children's hospitals have high rates of medical complexity and often reside in low-income and medically underserved areas. Compared with nonrural children, rural children experience more expensive hospitalizations and more frequent readmissions.

Hospital Utilization Among Children With the Highest Annual Inpatient Cost

BACKGROUND AND OBJECTIVES

Children who experience high health care costs are increasingly enrolled in clinical initiatives to improve their health and contain costs. Hospitalization is a significant cost driver. We describe hospitalization trends for children with highest annual inpatient cost (CHIC) and identify characteristics associated with persistently high inpatient costs in subsequent years.

METHODS

Retrospective study of 265 869 children age 2 to 15 years with ≥1 admission in 2010 to 39 children's hospitals in the Pediatric Health Information System. CHIC were defined as the top 10% of total inpatient costs in 2010 (n = 26 574). Multivariate regression and regression tree modeling were used to distinguish individual characteristics and interactions of characteristics, respectively, associated with persistently high inpatient costs (≥80th percentile in 2011 and/or 2012).

RESULTS

The top 10% most expensive children (CHIC) constituted 56.9% ($2.4 billion) of total inpatient costs in 2010. Fifty-eight percent (n = 15 391) of CHIC had no inpatient costs in 2011 to 2012, and 27.0% (n = 7180) experienced persistently high inpatient cost. Respiratory chronic conditions (odds ratio [OR] = 3.0; 95% confidence interval [CI], 2.5-3.5), absence of surgery in 2010 (OR = 2.0; 95% CI, 1.8-2.1), and technological assistance (OR = 1.6; 95% CI, 1.5-1.7) were associated with persistently high inpatient cost. In regression tree modeling, the greatest likelihood of persistence (65.3%) was observed in CHIC with ≥3 hospitalizations in 2010 and a chronic respiratory condition.

CONCLUSIONS

Most children with high children's hospital inpatient costs in 1 year do not experience hospitalization in subsequent years. Interactions of hospital use and clinical characteristics may be helpful to determine which children will continue to experience high inpatient costs over time.

Medical students as health educators at a student-run free clinic: improving the clinical outcomes of diabetic patients

PURPOSE

Student-run free clinics (SRFCs) provide service-learning opportunities for medical students and care to underserved patients. Few published studies, however, support that they provide high-quality care. In this study, the authors examined the clinical impact of a medical student health educator program for diabetic patients at an SRFC.

METHOD

In 2012, the authors retrospectively reviewed the electronic medical records of diabetic patients who established care at Shade Tree Clinic in Nashville, Tennessee, between 2008 and 2011. They compared clinical outcomes at initial presentation to the clinic and 12 months later. They analyzed the relationship between the number of patient-student interactions (touchpoints) and change in hemoglobin A1c values between these two time points and compared the quality of care provided to best-practice benchmarks (process and outcomes measures).

RESULTS

The authors studied data from 45 patients. Mean hemoglobin A1c values improved significantly from 9.6 to 7.9, after a mean of 12.5 ± 1.5 months (P < .0001). A trend emerged between increased number of touchpoints and improvement in A1c values (r = 0.06, P = .10). A high percentage of patients were screened during clinic visits, whereas a low to moderate percentage met benchmarks for A1c, LDL, and blood pressure levels.

CONCLUSIONS

These findings demonstrate that a medical student health educator program at an SRFC can provide high-quality diabetes care and facilitate clinical improvement one year after enrollment, despite inherent difficulties in caring for underserved patients. Future studies should examine the educational and clinical value of care provided at SRFCs.

Mercury activates phospholipase a(2) and induces formation of arachidonic Acid metabolites in vascular endothelial cells

ABSTRACT Currently, mercury has been identified as a risk factor in cardiovascular diseases among humans. Here, we tested our hypothesis that mercury modulates the activity of the vascular endothelial cell (EC) lipid signaling enzyme phospholipase A(2) (PLA(2)), which is an important player in the EC barrier functions. Monolayers of bovine pulmonary artery ECs (BPAECs) in culture, following labeling of membrane phospholipids with [(3)H]arachidonic acid (AA), were exposed to the inorganic form of mercury, mercury chloride, and the release of free AA (index of PLA(2) activity) and formation of AA metabolites were determined by liquid scintillation counting and enzyme immunoassay, respectively. Mercury chloride significantly activated PLA(2) in BPAECs in a dose-dependent (0 to 50 muM) and time-dependent (0 to 120 min) fashion. Metal chelators significantly attenuated mercury-induced PLA(2) activation, suggesting that cellular mercury-ligand interaction is required for the enzyme activation and that chelators are suitable blockers for mercury-induced PLA(2) activation in ECs. Sulfhydryl (thiol-protective) agents, calcium chelating agents, and cPLA(2)-specific inhibitor also significantly attenuated the mercury-induced PLA(2), suggesting the role of thiol and calcium in the activation of cPLA(2) in BPAECs. Significant formation of AA metabolites, including the release of total prostaglandins, thromboxane B(2), and 8-isoprostane, were observed in BPAECs following their exposure to mercury chloride. Mercury chloride induced cytotoxicity as observed by the altered cell morphology and enhanced trypan blue uptake, which was attenuated by the cPLA(2) inhibitor AACOCF(3). The results of this study revealed that inorganic mercury-induced PLA(2) activation through the thiol and calcium signaling and the formation of bioactive AA metabolites further demonstrated the association of PLA(2) with the cytotoxicity of mercury in ECs. Overall, the results of the current study underscore the importance of PLA(2) signaling in mercury-induced endothelial dysfunctions.

Calcium and calmodulin regulate mercury-induced phospholipase D activation in vascular endothelial cells

Earlier, we reported that mercury, the environmental risk factor for cardiovascular diseases, activates vascular endothelial cell (EC) phospholipase D (PLD). Here, we report the novel and significant finding that calcium and calmodulin regulated mercury-induced PLD activation in bovine pulmonary artery ECs (BPAECs). Mercury (mercury chloride, 25 microM; thimerosal, 25 microM; methylmercury, 10 microM) significantly activated PLD in BPAECs. Calcium chelating agents and calcium depletion of the medium completely attenuated the mercury-induced PLD activation in ECs. Calmodulin inhibitors significantly attenuated mercury-induced PLD activation in BPAECs. Despite the absence of L-type calcium channels in ECs, nifedipine, nimodipine, and diltiazem significantly attenuated mercury-induced PLD activation and cytotoxicity in BPAECs. This study demonstrated the importance of calcium and calmodulin in the regulation of mercury-induced PLD activation and the protective action of L-type calcium channel blockers against mercury cytotoxicity in vascular ECs, suggesting mechanisms of mercury vasculotoxicity and mercury-induced cardiovascular diseases.

Effects of pharmacologic androgen treatment duration on glucocorticoid receptor alpha immunoreactivity of lumbosacral motor neurons in the male rat

It has previously been suggested that anabolic-androgenic steroids may affect neuromuscular function through their potential action as glucocorticoid receptor antagonists. Alternatively, androgens may regulate the sensitivity of neuromuscular systems to glucocorticoids by modulating GR levels. The purpose of this study was to determine the effects of chronic pharmacologic testosterone treatment of gonadally intact male rats on glucocorticoid receptor alpha immunoreactivity (GRalpha-IR) of motor neurons in the lumbosacral spinal cord. Circulating testosterone levels were chronically increased by subcutaneous Silastic capsules containing crystalline testosterone propionate (TP) for 7, 14, and 28 days. Age-matched sham-operated gonadally intact males served as controls. Relative cytoplasmic and nuclear GRalpha-IR of motor neurons located in the lateral motor column of spinal cord segments L(3) and L(4) (L(Lat); innervating rat hindlimb muscles) and the spinal nucleus of the bulbocavernosus (SNB; innervating the external anal sphincter, bulbocavernosus and levator ani muscles) was measured densitometrically. TP treatment duration had a significant impact on the mean GRalpha levels of both cellular compartments regardless of motor column (two-way ANOVA, P<0.001). The mean nuclear GRalpha-IR of lumbar motor neurons was significantly reduced after 7 days (OD: 0.239+/-0.013 S.E.M.; P<0.016) and 14 days (OD: 0.196+/-0.013; P<0.001) from the GRalpha-IR levels observed among the control group (OD: 0.296+/-0.012) by 20 and 40%, respectively. Interestingly, nuclear GRalpha-IR levels were similar to control levels after 28 days of TP treatment (OD: 0.307+/-0.010). Treatment-dependent changes in cytoplasmic GRalpha-IR paralleled the observed changes in nuclear GRalpha-IR. These data suggest that pharmacologic testosterone treatment effects on motor neuron gene expression may be mediated by testosterone-induced temporal fluctuations of GRalpha-dependent gene regulation.