Dataset Information

Medicaid Expansion and Incidence of Kidney Failure among Nonelderly Adults.

ABSTRACT:

Background

Low-income individuals without health insurance have limited access to health care. Medicaid expansions may reduce kidney failure incidence by improving access to chronic disease care.

Methods

Using a difference-in-differences analysis, we examined the association between Medicaid expansion status under the Affordable Care Act (ACA) and the kidney failure incidence rate among all nonelderly adults, aged 19-64 years, in the United States, from 2012 through 2018. We compared changes in kidney failure incidence in states that implemented Medicaid expansions with concurrent changes in nonexpansion states during pre-expansion, early postexpansion (years 2 and 3 postexpansion), and later postexpansion (years 4 and 5 postexpansion).

Results

The unadjusted kidney failure incidence rate increased in the early years of the study period in both expansion and nonexpansion states before stabilizing. After adjustment for population sociodemographic characteristics, Medicaid expansion status was associated with 2.20 fewer incident cases of kidney failure per million adults per quarter in the early postexpansion period (95% CI, -3.89 to -0.51) compared with nonexpansion status, a 3.07% relative reduction (95% CI, -5.43% to -0.72%). In the later postexpansion period, Medicaid expansion status was not associated with a statistically significant change in kidney failure incidence (-0.56 cases per million per quarter; 95% CI, -2.71 to 1.58) compared with nonexpansion status and the pre-expansion time period.

Conclusions

The ACA Medicaid expansion was associated with an initial reduction in kidney failure incidence among the entire, nonelderly, adult population in the United States; but the changes did not persist in the later postexpansion period. Further study is needed to determine the long-term association between Medicaid expansion and changes in kidney failure incidence.

SUBMITTER: Thorsness R

PROVIDER: S-EPMC8259656 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature

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Publications

Medicaid Expansion and Incidence of Kidney Failure among Nonelderly Adults.

Thorsness Rebecca R Swaminathan Shailender S Lee Yoojin Y Sommers Benjamin D BD Mehrotra Rajnish R Mehrotra Rajnish R Nguyen Kevin H KH Kim Daeho D Rivera-Hernandez Maricruz M Trivedi Amal N AN

Journal of the American Society of Nephrology : JASN 20210401 6

<h4>Background</h4>Low-income individuals without health insurance have limited access to health care. Medicaid expansions may reduce kidney failure incidence by improving access to chronic disease care.<h4>Methods</h4>Using a difference-in-differences analysis, we examined the association between Medicaid expansion status under the Affordable Care Act (ACA) and the kidney failure incidence rate among all nonelderly adults, aged 19-64 years, in the United States, from 2012 through 2018. We compa ...[more]

PMID: 33795426

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Project description:ImportanceAlthough Medicare provides health insurance coverage for most patients with kidney failure in the US, Medicare beneficiaries who initiate dialysis without supplemental coverage are exposed to substantial out-of-pocket costs. The availability of expanded Medicaid coverage under the Patient Protection and Affordable Care Act (ACA) for adults with kidney failure may improve access to care and reduce Medicare-financed hospitalizations after dialysis initiation.ObjectiveTo examine the implications of the ACA's Medicaid expansion for Medicare-financed hospitalizations, health insurance coverage, and predialysis nephrology care among Medicare-covered adults aged 19 to 64 years with incident kidney failure in the first year after initiating dialysis.Design, setting, and participantsThis cross-sectional study used a difference-in-differences approach to assess Medicare-financed hospitalizations among adults aged 19 to 64 years who initiated dialysis between January 1, 2010, and December 31, 2018, while covered by Medicare Part A (up to 5 years postexpansion). Data on patients were obtained from the Renal Management Information System's End Stage Renal Disease Medical Evidence Report, which includes data for all patients initiating outpatient maintenance dialysis regardless of health insurance coverage, treatment modality, or citizenship status, and these data were linked with claims data from the Medicare Provider Analysis and Review. Data were analyzed from January to August 2022.ExposureLiving in a Medicaid expansion state.Main outcomes and measuresPrimary outcomes were number of Medicare-financed hospitalizations and hospital days in the first 3 months, 6 months, and 12 months after dialysis initiation. Secondary outcomes included dual Medicare and Medicaid coverage at 91 days after dialysis initiation and the presence of an arteriovenous fistula or graft at dialysis initiation for patients undergoing hemodialysis.ResultsThe study population included 188 671 adults, with 97 071 living in Medicaid expansion states (mean [SD] age, 53.4 [9.4] years; 58 329 men [60.1%]) and 91 600 living in nonexpansion states (mean [SD] age, 53.0 [9.6] years; 52 677 men [57.5%]). In the first 3 months after dialysis initiation, Medicaid expansion was associated with a significant decrease in Medicare-financed hospitalizations (-4.24 [95% CI, -6.70 to -1.78] admissions per 100 patient-years; P = .001) and hospital days (-0.73 [95% CI, -1.08 to -0.39] days per patient-year; P < .001), relative reductions of 8% for both outcomes. Medicaid expansion was associated with a 2.58-percentage point (95% CI, 0.88-4.28 percentage points; P = .004) increase in dual Medicare and Medicaid coverage at 91 days after dialysis initiation and a 1.65-percentage point (95% CI, 0.31-3.00 percentage points; P = .02) increase in arteriovenous fistula or graft at initiation.Conclusions and relevanceIn this cross-sectional study with a difference-in-differences analysis, the ACA's Medicaid expansion was associated with decreases in Medicare-financed hospitalizations and hospital days and increases in dual Medicare and Medicaid coverage. These findings suggest favorable spillover outcomes of Medicaid expansion to Medicare-financed care, which is the primary payer for patients with kidney failure.

Project description:Research objectiveTo explore whether expanded Medicaid helps mitigate the relationship between unemployment due to COVID and being uninsured. Unanticipated unemployment spells are generally associated with disruptions in health insurance coverage, which could also be the case for job losses during the COVID-19 pandemic. Expanded access to Medicaid may insulate some households from long uninsurance gaps due to job loss.Data sourcePhase 1 of the Census Bureau's Experimental Household Pulse Survey covering April 23, 2020-July 21, 2020.Study designWe compare differences in health insurance coverage source and status linked to recent lob losses attributable to the COVID-19 pandemic in states that expanded Medicaid against states that did not expand Medicaid.Data collection/extraction methodsOur analytical dataset was limited to 733,181 non-elderly adults aged 20-64.Principal findingsTwenty-six percent of our study sample experienced an income loss between March 13, 2020, and the time leading up to the survey-16% experienced job losses (e.g., layoff, furlough) due to the COVID-19 crisis, and 11% had other reasons they were not working. COVID-linked job losses were associated with a 20 (p < 0.01) percentage-point (PPT) lower likelihood of having employer-sponsored health insurance (ESI). Relative to persons in states that did not expand Medicaid, persons in Medicaid expansion states experiencing COVID-linked job losses were 9 PPT (p < 0.01) more likely to report having Medicaid and 7 PPT (p < 0.01) less likely to be uninsured. The largest increases in Medicaid enrollment were among people who, based on their 2019 incomes, would not have qualified for Medicaid previously.ConclusionsOur findings suggest that expanded Medicaid eligibility may allow households to stabilize health care needs and they should become detached from private health coverage due to job loss during the pandemic. Households negatively affected by the pandemic are using Medicaid to insure themselves against the potential health risks they would incur while being unemployed.

Project description:ObjectiveTo estimate the effects of Affordable Care Act (ACA) Medicaid expansion on insurance and health services use for adults with disabilities who were newly eligible for Medicaid.Data sources2008-2018 Medical Expenditure Panel Survey data.Study designWe used the Agency for Healthcare Research and Quality (AHRQ) PUBSIM model to identify adults aged 26-64 years with disabilities who were newly Medicaid-eligible in expansion states or would have been eligible in non-expansion states had those states opted to expand. Outcomes included insurance coverage; access to care; receipt of primary care, outpatient specialty physician services, and preventive services; and out-of-pocket health care spending. To estimate the effects of Medicaid expansion, we used two-way fixed effects models and a triple differences framework to compare pre-post changes in each outcome in expansion and non-expansion states for adults with and without disabilities.Extraction methodsWe simulated Medicaid eligibility with the AHRQ PUBSIM model, which uses state-specific Medicaid rules and MEPS data on family relationships, state of residence, and income.Principal findingsAmong adults with disabilities who were newly eligible for Medicaid, Medicaid expansion was associated with significant increases in full-year Medicaid coverage (35.9 percentage points [pp], p < 0.001), receipt of primary care (15.5 pp, p < 0.01), and receipt of flu shots (19.2 pp, p < 0.01), and a significant decrease in out-of-pocket spending (-$457, p < 0.01). There were larger improvements for adults with disabilities compared to those without disabilities in full-year Medicaid coverage (11.0 pp, p < 0.01) and receipt of flu shots (18.0 pp, p < 0.05).ConclusionsMedicaid expansion was associated with improvements in full-year insurance coverage, receipt of primary and preventive care, and out-of-pocket spending for adults with disabilities who were newly eligible for Medicaid. For insurance coverage, preventive care, and some primary care measures, there were differentially larger improvements for adults with disabilities than for those without disabilities.

Dataset Information

Medicaid Expansion and Incidence of Kidney Failure among Nonelderly Adults.

Background

Methods

Results

Conclusions

Publications

Medicaid Expansion and Incidence of Kidney Failure among Nonelderly Adults.

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