Income-related Disparities Research Articles

Income-Related Disparities in Mortality Among Young Adults With Type 2 Diabetes

Previous studies have indicated an inverse association between income and mortality. However, differences in health outcomes according to the income level of young adults with type 2 diabetes (T2D) compared with older adults with T2D have not been elucidated. To estimate the overall and cause-specific mortality risks among patients with T2D according to income and age. This retrospective nationwide cohort study in South Korea included adults aged 20 to 79 years who were diagnosed with T2D between January 1, 2008, and December 31, 2013, and followed up until December 31, 2019, and age- and sex-matched controls without diabetes. Data were analyzed between January 1, 2023, and August 27, 2024. Risks of all-cause, cardiovascular, and cancer mortality were estimated according to participants' income, which was categorized into 3 levels (low, middle, and high) based on the health insurance premium. Logistic regression analyses and Cox proportional hazard regression analyses were performed according to age groups (20-39, 40-59, and 60-79 years). A total of 1 240 780 adults (604 975 patients with T2D and 635 805 age- and sex-matched controls without diabetes) were included in the analyses. Their mean (SD) age was 56.9 (11.8) years, and 626 176 (50.5%) were men. Overall, the risk of mortality increased with lower income among patients with T2D, as well as in comparison with controls without diabetes. There was an inverse association between income and mortality risk in younger individuals (adjusted hazard ratios of all-cause mortality in the low income vs high income subgroups with T2D were 2.88 [95% CI, 2.25-3.69] in those aged 20 to 39 years, 1.90 [95% CI, 1.81-2.00] in those aged 40 to 59 years, and 1.26 [95% CI, 1.23-1.29] in those aged 60 to 79 years; P < .001 for comparing risk ratios between age groups). The pattern of income-related disparities in younger individuals was observed in cardiovascular mortality but less in cancer mortality. In this cohort study of 1 240 780 individuals aged 20 to 79 years, the risk of mortality with low income was most prominent among individuals with T2D aged 20 to 39 years. These findings highlight the need for socioeconomic support to reduce income-related health disparities in younger individuals.

The cost of not getting care: income disparities in the affordability of health services across high-income countries

Abstract This presentation will present findings from the Commonwealth Fund 2023 International Health Policy Survey of the General Population, focusing on financial barriers in accessing healthcare among adults across 10 countries. It highlights significant income-related disparities in healthcare affordability, particularly in the United States, where nearly a quarter of the population lacks affordable access to care. While disparities exist in other countries, Germany and the Netherlands demonstrate lower rates of affordability issues and income disparities, possibly due to their universal health coverage models and cost-sharing caps based on income levels. These countries also prioritize mental health and dental care within their public health plans. The analysis emphasizes the critical need for affordable and comprehensive healthcare coverage to ensure equitable health outcomes. It suggests that policies such as cost-sharing caps and income-based subsidies could mitigate financial barriers to care, drawing insights from successful models in Germany and the Netherlands. Ultimately, addressing affordability is vital for achieving health equity and improving overall population health.

Heterogeneity in disparities by income in cardiovascular risk factors across 209 US metropolitan areas

ObjectiveThe United States has a lower life expectancy and wider income inequality than its similarly developed counterparts, and disparities continue to widen. The objective of our study is to examine the heterogeneity of disparities by income in cardiovascular disease (CVD) risk factors among U.S. metropolitan areas. MethodsData was obtained from the Behavioral Risk Factor Surveillance System for 2012–2019. We used self-reported data for respondent characteristics and for CVD risk factors/prevalence, and on metropolitan-level demographic and socioeconomic characteristics. We computed the relative index of inequality (RII) for each outcome using a multilevel Poisson model, sequentially adjusted for age, sex, and race/ethnicity with a random slope for income. We also included interactions between income and the metropolitan-level variables. ResultsOur sample included 1.4 million participants from 209 metropolitan areas. All CVD risk factors and CVD demonstrated income-related disparities. There were no clear regional patterns for risk factors, though seven of the top 10 large metropolitan areas with the widest disparities in CVD prevalence were in the South. Improved socioeconomic conditions were associated with wider disparities in the five risk factors, and contextual variables explained almost half of the variability in income disparities in smoking, sedentarism, and obesity, even after adjusting for age, sex, and race/ethnicity. ConclusionsThis study found that CVD risk factors and prevalence in U.S. metropolitan areas have heterogeneous income disparities, especially in advantaged metropolitan areas. Further studies with improved data collection may shed more light into potential drivers of income-based disparities in cardiovascular risk.

Cost-Associated Unmet Dental, Vision, And Hearing Needs Among Low-Income Medicare Advantage Beneficiaries.

Medicare Advantage (MA) supplemental benefits offered at no or low premiums are a key value proposition for low-income beneficiaries. Despite nearly $20billion in rebate payments to MA plans for funding supplemental benefits, their quality or enrollee access is not monitored. Using 2018-19 Medicare Current Beneficiary Survey data linked to MA plan data, we found that regardless of plan benefit generosity, low-income beneficiaries were more likely to report dental, vision, and hearing unmet needs because of cost. Enrollment in plans with higher corresponding-year (that is, the same year as unmet need measurement) star ratings was associated with lower dental unmet need. Income-related disparities in dental unmet needs were lower in the highest-rated plans. However, prior-year star ratings that determined plan payments were not associated with unmet needs or disparities in those needs. Policy makers should consider monitoring supplemental benefits for equity and access, and they should assess the value added by quality bonus payments to high-rated plans for beneficiaries' access.

A surge of interest: Analysing the increased public interest in lipedema using google trends.

This study aimed to monitor public interest in information related to Lipedema and examine potential temporal, seasonal, and income-related trends that may impact public interest. A dataset was created using the Google Trends tool by inputting the keyword "Lipedema" to obtain the relative search volume (RSV) from 2004 to the present in the United States (US). To examine potential income-related disparities in public interest in Lipedema across the US, RSV values were recorded in the five states with the highest and the lowest median income (Maryland, New Hampshire, New Jersey, Utah, and Washington and Mississippi, West Virginia, Arkansas, New Mexico, Kentucky, respectively). Public interest in Lipedema increased significantly over time (R2 = 0.693, p < .001 for the linear trend; R2 = 0.880, p < .001 for the quadratic trend). There were no significant differences between the RSV values between the month of the year and the season of the year (p = 1.000 and p = .859, respectively). RSV values of the five highest-income and low-income states showed significant increases (R2 = 0.333, p < .001, and R2 = 0.195, p < .001, respectively) More rapid growth in interest in Lipedema in states with high income compared to the states with low income (p < .001). Public interest in Lipedema is increasing in both high-income and low-income states. States with higher incomes are more interested. Searches for lipedema are expected to become more frequent, leading to a rising demand for comprehensive education in medical schools and clinician training programs. In addition, there will also be a need for easily accessible, high-quality information resources.

53267 Income-Related Disparities in Sunscreen Metabolite Concentrations: Insights into Sun Protection Behavior

53267 Income-Related Disparities in Sunscreen Metabolite Concentrations: Insights into Sun Protection Behavior

Mothers with low incomes view both individual and structural interventions as potentially helpful for supporting early child development

Many developmental psychologists aspire to conduct research that informs interventions and policies to prevent income-related disparities in child development. Among growing researcher discussion about the value of interventions that target “structural” and resource-related correlates of income inequality and child development (e.g., housing, food, material goods, cash), rather than individual, person-centered correlates (e.g., parenting behaviors), the perspectives of mothers with low incomes may provide important context. 281 mothers with young children and low incomes rated various structural and individual interventions, framed as having minimal costs and entry barriers, for their perceived helpfulness. Analyses were pre-registered. Overall, mothers rated all interventions very highly, though they rated structural interventions as slightly more helpful than individual interventions. Mothers rated interventions they used in the past as less helpful than those they hadn’t previously used. An exploratory qualitative analysis revealed mothers’ desires for supports in other intervention domains beyond those addressed in our survey. Together, mothers’ responses indicated that they did not see individual interventions as inherently unhelpful due to a focus on individual states, knowledge, and skills. Implications for developmental psychology and intervention science are discussed.

Examining Factors Related to Medical Home Attainment for Youth in Working Poor Households

The medical home model has been recognized as an effective approach for promoting comprehensive primary health care services. Even though income-related disparities have been highlighted as a barrier for equal access to health care, within pediatrics, youth in working poor households have been vastly understudied regarding risk factors for medical home attainment. To address this gap, this study uses conceptual guidance from the Andersen Health Care Utilization Model and applies hierarchical logistic regression methods to examine factors related to medical home attainment for youth in working poor homes. Results indicate that race, parental education, insurance coverage, English language proficiency, and health status are all significant predictors of medical home attainment, yielding important implications for policy and program planning.

A surge in queries: Analyzing the increased public interest in dry needling using Google trends – A cross-sectional observational study

BackgroundTo monitor public interest (PI) in information related to Dry needling (DN) therapy and examine potential temporal, seasonal, and income-related trends that may impact PI by using the relative search volume (RSV) from the Google Trends tool for the keyword "Dry Needling." MethodsFor this cross-sectional observational study, a dataset was created using the Google Trends tool from 2004 to the present in the United States (US). To examine potential income-related disparities in PI in DN across the US, RSV values were recorded in the five states with the highest and the lowest median income (Maryland, New Hampshire, New Jersey, Utah, and Washington and Mississippi, West Virginia, Arkansas, New Mexico, Kentucky, respectively). ResultsA linear regression model showed that the PI in DN increased significantly (R2 = 0,902, p < 0.001). There were no significant differences between the RSV values between the month of the year and the season of the year (p = 1.000 and p = 0.997, respectively). RSV values of the five highest-income and low-income states showed significant increases (R2 = 0,624, p < 0.001, and R2 = 0,477, p < 0.001, respectively). More rapid growth in interest in DN in states with high income compared to those with low income (p < 0.001). ConclusionsPI in DN treatment is increasing in both high and low-income states. States with higher incomes are more interested. DN treatment is expected to become more popular, which will lead to a rising demand for comprehensive education in medical schools and clinician training programs. In addition, there will also be a need for easily accessible, high-quality information resources.

Trends and Inequities in Use of Abortion Services in Nepal: A Nepal Demographic and Health Survey Data Analysis 1996-2022 A.D.

Despite policy advances and public health initiatives in Nepal to improve access to reproductive healthcare, disparities persist in utilization of abortion services. Grounded in longitudinal data from the Nepal Demographic and Health Survey from 1996 to 2022, this study aims to shed light on evolving patterns in pregnancy outcomes and inequities in use of abortion services across ecological zones and wealth quintiles. Utilizing six rounds of Nepal Demographic and Health Survey data, pregnancy outcomes were categorized as abortion, delivery, miscarriage, or stillbirth. Income-related inequality in the utilization of abortion services was assessed through the concentration index, ranging from -1 to 1. Trends over time were evaluated using the annual rate of change. The ARC indicated a substantial rise in induced abortion rates, surging from 0.4% in 1996 to 8.8% in 2022. In contrast, live births witnessed a decline from 92.8% to 81.2%. Significant variations were observed across ecological zones and wealth quintiles, with the Mountain zone and the Poorest group experiencing the most pronounced increases in induced abortion rates. By 2022, the concentration index reached a near-zero value, signifying a near-elimination of income-related disparities in the use of induced abortion services. The findings suggest that while there has been significant progress in access to and use of abortion services in Nepal, particularly post-2002 policy shifts, challenges remain. Women from lower socio-economic backgrounds continue to face barriers, indicating the need for a multi-pronged approach to address residual challenges. Nepal has made remarkable strides in enhancing equitable access to and use of induced abortion services, but more needs to be done to guarantee equitable access for all women. Future efforts should focus on policy reforms, infrastructural improvements, and societal change to eliminate existing barriers to reproductive healthcare.

Differences in medicaid expansion effects on buprenorphine treatment utilization by county rurality and income: A pharmacy data claims analysis from 2009–2018

BackgroundAlthough use of buprenorphine for treating opioid use disorder increased over the past decade, buprenorphine utilization remains limited in lower-income and rural areas. We examine how the Affordable Care Act Medicaid expansion influenced buprenorphine initiation rates by county income and evaluate how associations differ by county rural-urban status. MethodsThis study used nationwide 2009–2018 IQVIA retail pharmacy data and a comparative interrupted time series framework–a hybrid framework combining regression discontinuity and difference-in-difference approaches. We used piecewise linear estimation to quantify changes in buprenorphine initiation rates before and after Medicaid expansion. ResultsThe sample included observations from 376,704 county-months. We identified 5,227,340 new buprenorphine treatment episodes, with an average of 9.2 new buprenorphine episodes per month per 100,000 county residents. Among urban counties, those with the lowest median incomes experienced significantly larger increases in buprenorphine initiation rates associated with Medicaid expansion than counties with higher median incomes (5-year rates difference est=3525.3, se=1695.3, p = 0.04). However, among rural counties, there was no significant association between buprenorphine initiation rates and county median income after Medicaid expansion (5-year rates difference est=979.0, se=915.8, p = 0.29). ConclusionsMedicaid expansion was associated with a reduction in income-related buprenorphine disparities in urban counties, but not in rural counties. To achieve more equitable buprenorphine access, future policies should target low-income rural areas.

Knowledge and Attitude Toward Esthetic Dentistry and Smile Perception.

A smile is important in human communication and is increasingly valued in modern society. The perception of smile attractiveness is subjective and depends on many factors. This study aimed to evaluate and compare knowledge and attituderelated to esthetic dentistry in dental students versus dental interns, general dentists, and dental specialists, examine the self-perception of their smile, and identify parameters that influence smile perception. This cross-sectional study was conducted at King Abdulaziz University Dental Hospital in Jeddah, Saudi Arabia. Participants included dental students, interns, general practitioners, and specialists. They completed an electronic questionnaire covering demographics, knowledge about esthetic dentistry, attitudes towardsmile perception, and previous dental treatments. Data analysis involved descriptive statistics, bivariate analysis, and chi-square tests. A total of 275 individuals participated in our study. The study found that dental students' exposure and awareness of esthetic dentistry topics increased with academic progression. Gender, age, and marital status influenced self-perception and smile evaluation. More females perceived gender as an influencing factor in smile evaluation, while more males believed in the existence of an ideal smile. A substantial portion of the sample had undergone dental treatments, with no significant income-related disparities observed. This study highlights differences in knowledge and attitudes among dental students and professionals. Dental education appears to impact students' exposure to esthetic dentistry concepts. Moreover, gender, age, and marital status influence self-perception and evaluation of others' smiles.

Emergency Department Use Across Income Groups Following an Increase in Cost-Sharing

To encourage the appropriate utilization of emergency care, cost-sharing for emergency care was increased from HK$100 (US $12.8) to HK$180 (US $23.1) per visit in June 2017 in all public hospitals in Hong Kong. However, there are concerns that this increase could deter appropriate emergency department (ED) visits and be associated with income-related disparities. To examine changes in ED visits after the fee increase. This retrospective cohort study used administrative data from June 2015 to May 2019 from all public hospitals in Hong Kong. Participants included all Hong Kong residents aged 64 years and younger, categorized into low-income, middle-income, and high-income groups according to the median household income in their district of residence. Data analysis was performed from May to June 2023. The primary outcome was the ED visit rate per 100 000 people per month, categorized into 3 severity levels (emergency, urgent, and nonurgent). Secondary outcomes include general outpatient (GOP) visit rate, emergency admission rate, and in-hospital mortality rate per month at public hospitals. Segmented regression analyses were used to estimate changes in the level and slope of outcome variables before and after the fee increase. This study included a total of 5 441 679 ED patients (2 606 332 male patients [47.9%]; 2 108 933 patients [38.5%] aged 45-64 years), with 2 930 662 patients (1 407 885 male patients [48.0%]; 1 111 804 patients [37.9%] aged 45-64 years) from the period before the fee increase. The fee increase was associated with an 8.0% (95% CI, 7.1%-9.0%) immediate reduction in ED visits after June 2017, including a 5.9% (95% CI, 3.3%-8.5%) reduction in urgent visits and an 8.9% (95% CI, 8.0%-9.8%) reduction in nonurgent visits. In addition, a 5.7% (95% CI, 4.7%-6.8%) reduction of emergency admissions was found, whereas no significant changes were observed in in-hospital mortality. Specifically, a statistically significant increase in GOP visits (4.1%; 95% CI, 0.9%-7.2%) was found within the low-income group, but this association became insignificant after controlling for the social security group, who were exempted from payment, as a control. In this cohort study, the fee increase was not associated with changes in ED visits for emergency conditions, but there was a negative and significant association with both urgent and nonurgent conditions across all income groups. Considering the marginal increase in public GOP services, further study is warranted to examine strategies to protect low-income people from avoiding necessary care.

Time trends in income-related disparity in incidence of acute coronary syndrome.

Higher incidence of acute coronary syndrome (ACS), among those with lower income, has been recognized in the most recent decades. Still, there is a paucity of data on temporal changes. This study aims to investigate 20-year time trends in income-related disparity in the incidence of ACS in Denmark. This Population-based repeated cross-sectional study included all patients with first-time ACS, aged ≥20 years, registered in the Danish National Patient Registry 1998-2017. Aggregated sociodemographic data for the Danish population was accessed from Statistics Denmark. Yearly incidence rates (IR) and incidence rate ratios (IRR), with the highest-income quartile as a reference, were standardized using cell-specific personal equivalent income according to year, sex and age group with 95% confidence intervals. Interaction analysis was executed for differences in IR of ACS between the lowest- and highest-income quartile over time. A total of 220 070 patients hospitalized with ACS from 1998 to 2017 were identified. The yearly standardized ACS IRs decreased in all income quartiles. However, the IR remained higher in the lowest-income quartile compared to the highest for both men [1998: IRR 1.45 (95% confidence interval, CI 1.39-1.52) and 2017: 1.47 (1.40-1.54)] and women [1998: IRR 1.73 (1.64-1.82) and 2017: 1.76 (1.65-1.88)]. Interaction analysis showed that over the period the difference in IR between the lower- and the highest-income quartile decreased with 1-5 ACS cases per 100 000 person-year. Income-related disparity in the incidence of ACS was present in Denmark between 1998 and 2017. Despite a marked overall decrease in the yearly ACS incidence, the extent of income-related disparity remained unchanged.

A-40 | Dissecting Disparities of Post-Percutaneous Intervention Outcomes in Acute Myocardial Infarction Patients With COVID-19: Insights from National Inpatient Sample, 2020

It is well-established that COVID-19 increases the risk of cardiovascular conditions, including acute myocardial infarction (AMI) and its associated complications. Through this study, we sought to establish the association of sociodemographic attributes with in-hospital all-cause mortality among COVID-19 patients with AMI who underwent PCI. We extracted data from the National Inpatient Sample 2020 using the ICD-10-CM codes for admissions related to COVID-19 patients with AMI who underwent PCI. We performed multivariate regression analysis, adjusted for demographics and hospital-level confounders to assess the trends of the age, race, sex, and median household income-related disparities in post-PCI in-hospital all-cause mortality among COVID-19 patients with AMI. A total of 3735 COVID-19 patients admitted with AMI and who underwent PCI were included in this study. The prevalence of COVID-19 patients with AMI who underwent PCI was highest among elderly [ages >/= 65 (47.7%)], male (70.4%), white (60.6%), and lowest income quartile (35.6%) patients. Among 3735 COVID-19 patients with AMI, 20.2% had all-cause in-hospital mortality, and 3.2% had a stroke after the PCI. A statistically significant association was present between post-PCI in-hospital all-cause mortality and among elderly patients (adjusted odds ratio (aOR) 4.67, 95% confidence interval (CI) 1.64-13.31, p=0.005) and the lowermost income quartile patients (aOR 1.90, 95% CI 1.01-3.57, p=0.031). However, we did not find any statistically significant association between post-PCI in-hospital all-cause mortality and sex, race, ages 18-64, or medium lowest/medium highest/highest income quartiles. This population-based analysis revealed that elderly and lower socioeconomic class COVID-19 patients with AMI had higher odds of post-PCI in-hospital all-cause mortality. Associated comorbidities with advancing age and late access to health care among low socioeconomic classes could be the reasons for the observed disparities among these groups. Further studies are needed to understand the impact of social determinants on long-term association in a better way.

Racial/ethnic disparities in preventive dental services use and dental caries among children.

To assess disparities in preventive dental service use in four major racial/ethnic groups and assess whether racial/ethnic and income-related disparities among children were reduced from 2016 to 2020. Data were from the 2016 and 2020 National Survey of Children's Health (NSCH). The outcomes of interest were having dental sealants, fluoride treatment, and dental caries in the past 12 months. Racial/ethnic groups included non-Hispanic (NH) whites, blacks, Hispanics, Asians, and others. Family income level was categorized as below or above the 200% federal poverty level (low-income vs. high-income). Children ages 2-17 were included (N=161,539). All data were self-reported by parents/guardians. We estimated the trends of racial/ethnic disparities in having fluoride treatment, dental sealants, and dental caries from 2016 to 2020 and tested two 2-way interactions (i.e., year by race/ethnicity, year by income) and one 3-way interaction (year by income by race/ethnicity) to assess the change in disparities from 2016 to 2020. Overall, no significant trends in receipt of fluoride treatment, dental sealants, or having dental caries were found from 2016 to 2020 among the racial/ethnic groups, except for a decreasing trend in dental sealants for Asian American children (p=0.03). Overall, NH white children were more likely to have received preventive dental services than children from minority groups (all p < 0.05); Asian American children (AOR=1.31) were more likely to have dental caries than NH white children. Disparities in receipt of evidence-based preventive services by children persisted. Continuous efforts are needed to promote the use of preventive dental services among children of minority populations.

Growing Income-Related Disparities in Cardiovascular Hospitalizations Among People With Diabetes, 1995-2019: A Population-Based Study.

Cardiovascular risk reduction is an important focus in the management of people with diabetes. Although event rates have been declining over the long term, they have been observed to plateau or reverse in recent years. Furthermore, the impact of income-related disparities in cardiovascular events is unknown. The objective of this study is to evaluate age-, sex-, and income-related trends in cardiovascular hospitalization rates among people with diagnosed diabetes. We calculated rates of hospitalization for acute myocardial infarction, stroke, heart failure, and lower-extremity amputation in annual cohorts of the entire population of Ontario, Canada, with diagnosed diabetes, from 1995 to 2019. Event rates were stratified by age, sex, and income level. We studied nearly 1.7 million people with diabetes. The rate of acute myocardial infarction declined throughout the 25-year study period (P < 0.0001), such that the rate in 2019 was less than half the rate in 1995. Rates of stroke (P < 0.0001), heart failure (P < 0.0001), and amputation (P < 0.0001) also changed over time, but hospitalization rates stabilized through the 2010s. This apparent stabilization concealed a growing income-related disparity: wealthier patients showed continued declines in rates of these outcomes during the decade, whereas rates for lower-income patients increased (P for interaction < 0.0001 for all four outcomes). During a quarter-century of follow-up, cardiovascular hospitalization rates among people with diabetes fell. However, the apparent stabilization in rates of stroke, heart failure, and amputation in recent years masks the fact that rates have risen for lower-income individuals.

“I Had Bills to Pay”: a Mixed-Methods Study on the Role of Income on Care Transitions in a Public-Payer Healthcare System

BackgroundIncome disparities may affect patients’ care transition home. Evidence among patients who have access to publicly funded healthcare coverage remains limited.ObjectiveTo evaluate the association between low income and post-discharge health outcomes and explore patient and caregiver perspectives on the role of income disparities.DesignMixed-methods secondary analysis conducted among participants in a double-blind randomized controlled trial.ParticipantsParticipants from a multicenter study in Ontario, Canada, were classified as low income if annual self-reported salary was below $29,000 CAD, or between $30,000 and $50,000 CAD and supported ≥ 3 individuals.Main MeasuresThe associations between low income and the following self-reported outcomes were evaluated using multivariable logistic regression: patient experience, adherence to medications, diet, activity and follow-up, and the aggregate of emergency department (ED) visits, readmission, or death up to 3 months post-discharge. A deductive direct content analysis of patient and caregivers on the role of income-related disparities during care transitions was conducted.Key ResultsIndividuals had similar odds of reporting high patient experience and adherence to instructions regardless of reported income. Compared to higher income individuals, low-income individuals also had similar odds of ED visits, readmissions, and death within 3 months post-discharge. Low-income individuals were more likely than high-income individuals to report understanding their medications completely (OR 1.9, 95% CI: 1.0–3.4) in fully adjusted regression models. Two themes emerged from 25 interviews which (1) highlight constraints of publicly funded services and costs incurred to patients or their caregivers along with (2) the various ways patients adapt through caregiver support, private services, or prioritizing finances over health.ConclusionsThere were few quantitative differences in patient experience, adherence, ED visits, readmissions, and death post-discharge between individuals reporting low versus higher income. Several hidden costs for transportation, medications, and home care were reported however and warrant further research.

Is the socioeconomic inequality in stroke prognosis changing over time and does quality of care play a role?

In a publicly financed healthcare system we aimed to study the development in socioeconomic disparity in ischemic stroke outcomes over time. In addition, we study whether the healthcare system affects these outcomes through the quality of early stroke care when adjustments are made for various patient characteristics incl. comorbidity and stroke severity. Using nationwide, detailed individual-level register-data we analysed how income-related and education-related inequality in 30-day mortality and 30-day readmission risk developed between 2003 and 2018. In addition, focusing on income-related inequality, we applied mediation analyses to estimate the mediating role of quality of acute stroke care on 30-day mortality and 30-day readmission. A total of 97,779 individual ischemic stroke patients were registered in Denmark with a first ever stroke in the study period. Three-point-seven percent died within 30 days of their index-admission and 11.5% were readmitted within 30 days of discharge. The income-related inequality in mortality remained virtually unchanged over time from an RR of 0.53 (95% CI: 0.38; 0.74) in 2003-06 to RR 0.69 (95% CI: 0.53; 0.89)) in 2015-18 when high income was compared to low income (Family income-time interaction: RR 1.00 (95% CI: 0.98-1.03)). A similar but less uniform trend was found for the education-related inequality in mortality (Education-time interaction: RR 1.00 (95% CI: 0.97-1.04)). The income-related disparity in 30-day readmission was smaller than in 30-day mortality and it diminished over time from 0.70 (95% CI: 0.58; 0.83) to 0.97 (95% CI: 0.87; 1.10). The mediation analysis showed no systematic mediating effect of quality of care on neither mortality nor readmission. However, it cannot be ruled out that residual confounding may have washed out some mediating effects. The socioeconomic inequality in stroke mortality and re-admission risk has yet to be eliminated. Additional studies from different settings are warranted in order to clarify the impact of socioeconomic inequality of quality of acute stroke care.

Income-Related Peripheral Artery Disease Treatment: A Nation-Wide Analysis from 2009-2018.

Economic status has a measurable and significant effect on cardiovascular health. Socioeconomic- and income-related disparities worsen cardiovascular risk factors. Peripheral artery disease (PAD) remains a major risk factor for morbidity and mortality. Not all patients benefit equally from recent advances in outpatient healthcare. The implementation of guideline recommendations regarding treatment is inadequate. Income-related disparities for PAD treatment are unknown. We aimed to analyse income-stratified PAD prevalence, outpatient treatment and pharmacotherapy. Associations of statutory health insurance physicians at the regional level, income-stratified PAD prevalence and differences in outpatient care and pharmacotherapy were analysed in 70.1 million statutorily insured patients/year between 2009 and 2018. Analysis was based on claims data (§295 of the social code (SGB V)) and drug-prescription data (§300 SGB V). The diagnosis of PAD was defined by ICD I70.2-9. Regional income data were derived from the German Census Bureau. PAD prevalence was higher in low-income than in high-income areas. Low-income patients more often presented to angiology outpatient care and more frequently received guideline recommended pharmacotherapy. High-income patients more often presented to outpatient vascular surgery. This was true for statins, antiplatelets, intermittent claudication and critical limb ischemia alike. These data indicate that PAD and income are associated. Regional income is related to insufficiencies in guideline-recommended treatment and contact to vascular specialists. Our results aim to encourage medical professionals to implement PAD guideline recommendations, especially in high-income areas. Further studies on associations between spatial-level income and healthcare in PAD are needed.