The Economic Burden of Eosinophilic Gastritis and Eosinophilic Enteritis in the United States. 2022

Michael Woolley, and Erin E Cook, and Fan Mu, and Keith A Betts, and Emma Billmyer, and Erica Yim, and Jingyi Chen, and Eric Q Wu
Allakos Inc., San Carlos, CA, USA.

Eosinophilic gastritis and eosinophilic enteritis (EoG/EoN) are associated with a substantial clinical burden. However, limited information is available regarding the economic burden of EoG/EoN. This study was conducted to compare healthcare resource use (HRU) and costs among patients with EoG/EoN versus without EoG/EoN in the USA. Administrative claims data from the IBM MarketScan® Commercial Claims and Encounters (CCAE) and Medicare Supplemental and Coordination of Benefits Databases (2009-2019) was used to identify two cohorts of patients. Patients without EoG/EoN were matched 3:1 to patients with EoG/EoN on sex, year of birth, and healthcare plan type. Study measures included demographic characteristics, select comorbidities, all-cause HRU, and costs. Comparisons were made over a 1-year period following EoG/EoN diagnosis for patients with EoG/EoN and an eligible date for patients without EoG/EoN. A total of 2219 patients with EoG/EoN and 6657 patients without EoG/EoN were analyzed. Significantly higher proportions of patients with EoG/EoN versus without EoG/EoN had comorbid conditions. Rates of all-cause HRU were significantly higher among patients with EoG/EoN versus patients without EoG/EoN (adjusted rate ratio [95% confidence interval]: inpatient visits, 6.26 [5.26, 7.46]; outpatient visits, 1.17 [1.16, 1.19]; emergency department visits, 2.11 [1.98, 2.25]; all p < 0.001). Patients with EoG/EoN incurred significantly higher costs versus patients without EoG/EoN (adjusted mean cost difference $31,180; p < 0.001). Cost differences were largely due to outpatient (adjusted mean cost difference $14,018; p < 0.001) and inpatient (adjusted mean cost difference $11,224; p < 0.001) costs. The economic burden associated with EoG/EoN is substantial, with patients with EoG/EoN having a higher rate of HRU and incurring $31,180 more than patients without EoG/EoN on average. Most of the cost difference was attributable to outpatient and inpatient costs. Cost-saving strategies to lower the burden of illness in this patient population are needed.

UI MeSH Term Description Entries
D004751 Enteritis Inflammation of any segment of the SMALL INTESTINE. Enteritides
D004802 Eosinophilia Abnormal increase of EOSINOPHILS in the blood, tissues or organs. Eosinophilia, Tropical,Hypereosinophilia,Tropical Eosinophilia,Hypereosinophilias,Tropical Eosinophilias
D005756 Gastritis Inflammation of the GASTRIC MUCOSA, a lesion observed in a number of unrelated disorders. Gastritides
D006278 Medicare Federal program, created by Public Law 89-97, Title XVIII-Health Insurance for the Aged, a 1965 amendment to the Social Security Act, that provides health insurance benefits to persons over the age of 65 and others eligible for Social Security benefits. It consists of two separate but coordinated programs: hospital insurance (MEDICARE PART A) and supplementary medical insurance (MEDICARE PART B). (Hospital Administration Terminology, AHA, 2d ed and A Discursive Dictionary of Health Care, US House of Representatives, 1976) Health Insurance for Aged and Disabled, Title 18,Insurance, Health, for Aged and Disabled,Health Insurance for Aged, Disabled, Title 18,Health Insurance for Aged, Title 18
D006295 Health Resources Available manpower, facilities, revenue, equipment, and supplies to produce requisite health care and services. Resources,Health Resource,Resource,Resource, Health,Resources, Health
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000086522 Financial Stress Stress arising from personal financial concerns. (www.cancer.gov/publications/dictionaries/cancer-terms/def/financial-stress). Economic Burden,Economic Hardship,Financial Burden,Financial Challenges,Financial Hardship,Financial Pressures,Financial Resource Strain,Financial Strain,Financial Toxicity,Insufficient Financial Resources,Socioeconomic Adversity,Adversity, Socioeconomic,Burden, Economic,Burden, Financial,Challenge, Financial,Economic Burdens,Economic Hardships,Financial Burdens,Financial Challenge,Financial Hardships,Financial Pressure,Financial Resource Strains,Financial Resource, Insufficient,Financial Strains,Financial Stresses,Financial Toxicities,Hardship, Economic,Hardship, Financial,Insufficient Financial Resource,Pressure, Financial,Resource Strain, Financial,Resource, Insufficient Financial,Socioeconomic Adversities,Strain, Financial,Strain, Financial Resource,Stress, Financial,Toxicity, Financial
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D012189 Retrospective Studies Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons. Retrospective Study,Studies, Retrospective,Study, Retrospective
D014481 United States A country in NORTH AMERICA between CANADA and MEXICO.

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