Maria Pisu1, Joshua Richman2, Jerzy P Szaflarski3, Ellen Funkhouser1, Chen Dai4, Lucia Juarez1, Edward Faught5, Roy C Martin3. 1. Division of Preventive Medicine, University of Alabama at Birmingham, Birmingham, Alabama. 2. Department of Surgery, University of Alabama at Birmingham, Birmingham, Alabama. 3. Department of Neurology, University of Alabama at Birmingham, Birmingham, Alabama. 4. Center for Health Service Research, University of Kentucky, Lexington, Kentucky. 5. Department of Neurology, Emory University, Atlanta, Georgia.
Abstract
OBJECTIVE: To examine health care costs in diverse older Medicare beneficiaries with epilepsy. METHODS: Using 2008-2010 claims data, we conducted a longitudinal cohort study of a random sample of Medicare beneficiaries augmented for minority representation. Epilepsy cases (n = 36 912) had ≥1 International Classification of Diseases, Ninth Edition (ICD-9) 345.x or ≥2 ICD-9 780.3x claims, and ≥1 antiepileptic drug (AED) in 2009; new cases (n = 3706) had no seizure/epilepsy claims nor AEDs in the previous 365 days. Costs were measured by reimbursements for all care received. High cost was defined as follow-up 1-year cost ≥ 75th percentile. Logistic regressions examined association of high cost with race/ethnicity, adjusting for demographic, clinical, economic, and treatment quality factors. In cases with continuous 2-year data, we obtained costs in two 6-month periods before and two after the index event. RESULTS: Cohort was ~62% African Americans (AAs), 11% Hispanics, 5% Asians, and 2% American Indian/Alaska Natives. Mean costs in the follow-up were ~$30 000 (median = $11 547; new cases, mean = $44 642; median = $25 008). About 19% white compared to 27% AA cases had high cost. AA had higher odds of high cost in adjusted analyses (odds ratio [OR] = 1.20, 95% confidence interval [CI] = 1.11-1.29), although this was only marginally significant when adjusting for AED adherence (OR = 1.09, 95% CI = 1.01-1.18, P = 0.03). Factors associated with high cost included ≥1 comorbidity, neurological care, and low AED adherence. Costs were highest at ~$17 000 in the 6 months immediately before and after the index event (>$29 000 for new cases). SIGNIFICANCE: The financial sequelae of epilepsy among older Americans disproportionally affect minorities. Studies should examine contributors to high costs. Wiley Periodicals, Inc.
OBJECTIVE: To examine health care costs in diverse older Medicare beneficiaries with epilepsy. METHODS: Using 2008-2010 claims data, we conducted a longitudinal cohort study of a random sample of Medicare beneficiaries augmented for minority representation. Epilepsy cases (n = 36 912) had ≥1 International Classification of Diseases, Ninth Edition (ICD-9) 345.x or ≥2 ICD-9 780.3x claims, and ≥1 antiepileptic drug (AED) in 2009; new cases (n = 3706) had no seizure/epilepsy claims nor AEDs in the previous 365 days. Costs were measured by reimbursements for all care received. High cost was defined as follow-up 1-year cost ≥ 75th percentile. Logistic regressions examined association of high cost with race/ethnicity, adjusting for demographic, clinical, economic, and treatment quality factors. In cases with continuous 2-year data, we obtained costs in two 6-month periods before and two after the index event. RESULTS: Cohort was ~62% African Americans (AAs), 11% Hispanics, 5% Asians, and 2% American Indian/Alaska Natives. Mean costs in the follow-up were ~$30 000 (median = $11 547; new cases, mean = $44 642; median = $25 008). About 19% white compared to 27% AA cases had high cost. AA had higher odds of high cost in adjusted analyses (odds ratio [OR] = 1.20, 95% confidence interval [CI] = 1.11-1.29), although this was only marginally significant when adjusting for AED adherence (OR = 1.09, 95% CI = 1.01-1.18, P = 0.03). Factors associated with high cost included ≥1 comorbidity, neurological care, and low AED adherence. Costs were highest at ~$17 000 in the 6 months immediately before and after the index event (>$29 000 for new cases). SIGNIFICANCE: The financial sequelae of epilepsy among older Americans disproportionally affect minorities. Studies should examine contributors to high costs. Wiley Periodicals, Inc.
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