Abstract
Introduction
Comparative data on the burden of atopic dermatitis (AD) in adults relative to the general population are limited. We performed a large-scale evaluation of the burden of disease among US adults with AD relative to matched non-AD controls, encompassing comorbidities, healthcare resource utilization (HCRU), and costs, using healthcare claims data. The impact of AD disease severity on these outcomes was also evaluated.
Methods
Adult AD patients in the Commercial (n = 83,106), Medicare (n = 31,060), and Medi-Cal (n = 5550) databases were matched (1:1) to non-AD controls by demographic characteristics. AD patients were stratified by disease severity (higher, lower) using treatment as a surrogate measure of severity. The comorbidity burden, HCRU, and costs were evaluated during a 12-month follow-up period.
Results
In the Commercial, Medicare, and Medi-Cal populations, patients with AD had a significantly higher overall comorbidity burden (P < 0.0001), an increased risk of asthma and allergic rhinitis (both P < 0.0001), higher HCRU (P < 0.05), and higher mean total per patient costs (Commercial: US$10,461 versus US$7187; Medicare: US$16,914 versus US$13,714; Medi-Cal; US$19,462 versus US$10,408; all P < 0.0001), compared with matched non-AD controls. Higher disease severity was associated with an increased comorbidity burden (P < 0.0001), HCRU (P < 0.05), and total costs (Commercial: US$14,580 versus US$7192; Medicare: US$21,779 versus US$12,490; Medi-Cal; US$22,123 versus US$16,639; all P < 0.0001) relative to lower severity disease.
Conclusion
In this large-scale, healthcare claims database analysis, AD patients had a significantly higher comorbidity burden, HCRU, and costs compared with matched non-AD controls. Higher disease severity was associated with an even greater comorbidity and economic burden.
Funding
Sanofi and Regeneron Pharmaceuticals, Inc.
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