Dataset Information

The association between community-level insurance coverage and emergency department use.

ABSTRACT: Emergency departments (EDs) nationwide are key entry points into the health care system, and their use may reflect changes in access and need in their communities. However, no studies to date have empirically and longitudinally studied how changes in a community's level of insurance coverage, a key determinant of access, affect ED utilization.To determine the effects of changes in a community's rate of insurance coverage on its population's ED use.We conducted a longitudinal analysis of all California counties between 2005 and 2010 using comprehensive ED visit data from the California Office of Statewide Health Planning and Development. Using Poisson regression with county and year fixed effects, we determined how changes in the rate of insurance coverage within a given county affect ED visits per 1000 residents.We found that changes in the rate of insurance coverage within a county had a slight but significant inverse relationship with ED visits per 1000 residents for both adults and children. For example, if a county's rate of insurance coverage among adults jumped from the 10th (73.22%) to the 90th percentile (84.93%), an estimated 2 fewer ED visits would occur per 1000 adult residents.As the rate of insurance coverage increased within California counties, overall ED utilization declined only slightly. Thus, expanding insurance coverage may not lead to significant decreases in overall ED use.

SUBMITTER: Baker LC

PROVIDER: S-EPMC4117395 | biostudies-literature | 2014 Jun

REPOSITORIES: biostudies-literature

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The association between community-level insurance coverage and emergency department use.

Baker Laurence C LC Hsia Renee Y RY

Medical care 20140601 6

<h4>Background</h4>Emergency departments (EDs) nationwide are key entry points into the health care system, and their use may reflect changes in access and need in their communities. However, no studies to date have empirically and longitudinally studied how changes in a community's level of insurance coverage, a key determinant of access, affect ED utilization.<h4>Objective</h4>To determine the effects of changes in a community's rate of insurance coverage on its population's ED use.<h4>Methods ...[more]

PMID: 24824537

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Project description:Importance:Studies of public hospitals have reported increasing incidence of emergency department (ED) transfers of uninsured patients for hospitalization, which is perceived to be associated with financial incentives. Objective:To examine the differences in risk-adjusted transfer and discharge rates by patient insurance status among hospitals capable of providing critical care. Design, Setting, and Participants:A cross-sectional analysis of the 2015 National Emergency Department Sample was conducted, including visits between January 2015 and December 2015. Adult ED visits throughout 2015 (n = 215 028) for the 3 common medical conditions of pneumonia, chronic obstructive pulmonary disease, and asthma, at hospitals with intensive care capabilities were included. Only hospitals with advanced critical care capabilities for pulmonary care were included. Main Outcomes and Measures:The primary outcomes were patient-level and hospital-level risk-adjusted ED discharges, ED transfers, and hospital admissions. Adjusted odds of discharge or transfer compared with admission among uninsured patients, Medicaid and Medicare beneficiaries, and privately insured patients are reported. Hospital ownership status was used for the secondary analysis. Results:Of the 30 542 691 ED visits to 953 hospitals included in the 2015 National Emergency Department Sample, 215 028 visits (0.7%) were for acute pulmonary diseases to 160 intensive care-capable hospitals. These visits were made by patients with a median (interquartile range [IQR]) age of 55 (40-71) years and who were predominantly female (124 931 [58.1%]). Substantial variation in unadjusted and risk-standardized ED discharge, ED transfer, and hospital admission rates was found across EDs. Compared with privately insured patients, uninsured patients were more likely to be discharged (odds ratio [OR], 1.66; 95% CI, 1.57-1.76) and transferred (adjusted OR [aOR], 2.41; 95% CI, 2.08-2.79). Medicaid beneficiaries had comparable odds of discharge (aOR, 1.00; 95% CI, 0.97-1.04) but higher odds of transfer (aOR, 1.19; 95% CI, 1.05-1.33). Conclusions and Relevance:After accounting for hospital critical care capability and patient case mix, the study found that uninsured patients and Medicaid beneficiaries with common medical conditions appeared to have higher odds of interhospital transfer.

Project description:BackgroundThe rates of emergency department (ED) utilization vary substantially by type of health insurance, but the association between health insurance type and patient-reported reasons for seeking ED care is unknown.ObjectiveWe evaluated the association between health insurance type and self-perceived acuity or access issues among individuals discharged from the ED.Design, patientsThis was a cross-sectional analysis of the 2011 National Health Interview Survey. Adults whose last ED visit did not result in hospitalization (n = 4,606) were asked structured questions about reasons for seeking ED care. We classified responses as 1) perceived need for immediate evaluation (acuity issues), or 2) barriers to accessing outpatient services (access issues).Main measuresWe analyzed survey-weighted data using multivariable logistic regression models to test the association between health insurance type and reasons for ED visits, while adjusting for sociodemographic characteristics.Key resultsOverall, 65.0% (95% CI 63.0-66.9) of adults reported ? 1 acuity issue and 78.9% (95% CI 77.3-80.5) reported ? 1 access issue. Among those who reported no acuity issue leading to the most recent ED visit, 84.2% reported ? 1 access issue. Relative to those with private insurance, adults with Medicaid (OR 1.05; 95% CI 0.79-1.40) and those with Medicare (OR 0.98; 95% CI 0.66-1.47) were similarly likely to seek ED care due to an acuity issue. Adults with Medicaid (OR 1.50; 95% CI 1.06-2.13) and Medicaid + Medicare (dual eligible) (OR 1.94; 95% CI 1.18-3.19) were more likely than those with private insurance to seek ED care for access issues.ConclusionVariability in reasons for seeking ED care among discharged patients by health insurance type may be driven more by lack of access to alternate care, rather than by differences in patient-perceived acuity. Policymakers should focus on increasing access to alternate sites of care, particularly for Medicaid beneficiaries, as well as strategies to increase care coordination that involve ED patients and providers.

Project description:ImportanceInsurers have increasingly adopted policies to reduce emergency department (ED) visits that they consider unnecessary. One common approach is to retrospectively deny coverage if the ED discharge diagnosis is determined by the insurer to be nonemergent.ObjectiveTo characterize ED visits that may be denied coverage if the ED coverage denial policy of a large national insurer, Anthem, Inc, is widely adopted.Design, setting, and participantsA cross-sectional analysis of probability-sampled ED visits from the nationally representative National Hospital Ambulatory Medical Care Survey ED subsample occurring from January 1, 2011, to December 31, 2015, was conducted. Visits by commercially insured patients aged 15 to 64 years were examined. Those with ED discharge diagnoses defined by Anthem's policy as nonemergent and therefore subject to possible denial of coverage were classified as denial diagnosis visits. The primary presenting symptoms among denial diagnosis visits were identified, and all visits by commercially insured adults presenting with these primary symptoms were classified as denial symptom visits.Main outcomes and measuresEach visit cohort as a weighted proportion of commercially insured adult ED visits. The proportion of each visit cohort that received ED-level care, defined as visits where patients were triaged as urgent or emergent, received 2 or more diagnostic tests, or were admitted or transferred, was also examined.ResultsFrom 2011 to 2015, 15.7% (95% CI, 15.0%-16.4%) of commercially insured adult ED visits (4440 of 28 304) were denial diagnosis visits (mean [SD] patient age, 36.6 [14.0] years; 2592 [58.7%] female and 2962 [63.5%] white). Among these visits, 39.7% (95% CI, 37.1%-42.3%) received ED-level care: 24.5% (95% CI, 21.7%-27.4%) were initially triaged as urgent or emergent and 26.0% (95% CI, 23.8%-28.3%) received 2 or more diagnostic tests. These denial diagnosis visits shared the same presenting symptoms as 87.9% (95% CI, 87.3%-88.4%) of commercially insured adult ED visits (24 882 of 28 304) (mean [SD] patient age, 38.5 [14.1] years; 14 362 [57.9%] female and 17 483 [68.7%] white). Among these denial symptom visits, 65.1% (95% CI, 63.4%-66.9%) received ED-level care: 43.2% (95% CI, 40.2%-46.4%) were triaged as urgent or emergent, 51.9% (95% CI, 50.0%-53.9%) received 2 or more diagnostic tests, and 9.7% (95% CI, 8.8%-10.6%) were admitted or transferred.Conclusions and relevanceAnthem's nonemergent ED discharge diagnoses were not associated with identification of unnecessary ED visits when assessed from the patient's perspective. This cost-reduction policy could place many patients who reasonably seek ED care at risk of coverage denial.

Project description:OBJECTIVES:Policymakers have increasingly focused on emergency department (ED) utilization for primary care-treatable conditions as a potentially avoidable source of rising health care costs. The objective was to determine the association of health insurance type and arrival time, as indicators of limited availability of primary care, with primary care-treatable classification of ED visits. METHODS:This was a retrospective analysis of a nationally representative sample of 241,167 ED visits from the 1997 to 2009 National Hospital Ambulatory Medical Care Surveys (NHAMCS). Probabilities of ED visits being primary care-treatable were categorized based on the primary International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) code. The association of health insurance type and arrival time was determined with the average probability of the primary diagnosis being primary care-treatable using multivariable linear regression. RESULTS:Compared to privately insured visits, Medicaid visits had a 1.7% (95% confidence interval [CI] = 1.2% to 2.2%) and uninsured visits a 2.4% (95% CI = 1.9% to 3.0%) higher probability of primary care-treatable classification, while Medicare visits had a 1.4% (95% CI = 0.7% to 2.0%) lower probability during the overall study period. Compared to business hours, weekend visits had a 1.5% (95% CI = 1.0% to 2.0%) higher probability of being primary care-treatable during the overall study period. From 1997 to 2009, the overall adjusted probability of ED visits being primary care-treatable increased by 0.19% (95% CI = 0.10 to 0.28) per year. This probability increased at a rate of 0.52% per year for Medicare visits (95% CI = 0.38% to 0.65%), more than double that of Medicaid visits (0.25% per year, 95% CI = 0.13% to 0.37%). By contrast, there was no significant change from 1997 to 2009 in the average probability of ED visits being primary care-treatable by privately insured (0.05% per year, 95% CI = -0.07 to 0.16) or uninsured (0.00% per year, 95% CI = -0.12 to 0.13) individuals. CONCLUSIONS:These findings add to prior work that implicates insurance type and arrival time in the variation of primary care-treatable ED visits. Although primary care-treatable classification of ED visits was most associated with uninsured or Medicaid visits, this classification increased most rapidly among Medicare visits during the study period.

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The association between community-level insurance coverage and emergency department use.

Publications

The association between community-level insurance coverage and emergency department use.

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