Abstract
Objectives: To evaluate the economic burden of herpes zoster (HZ) on the US healthcare system among an immunocompetent population.Methods: Claims data from the MarketScan Research databases for 2008–2011 were extracted to determine the incremental healthcare resource utilization (RU) and direct medical costs associated with HZ. Immunocompetent HZ-patients were identified and directly matched 1:1 with immunocompetent non-HZ controls using demographic and clinical variables. Analysis was limited to claims 21 days prior to through the first year following HZ diagnosis. Cases with post-herpetic neuralgia (PHN) were analyzed separately.Results: A total of 98,916 HZ-patients were matched to controls. HZ-patients had a mean age of 50.4 (SD = 18.8) years and 56.6% were females. HZ-cases had significantly higher RU (0.016 inpatient visits, 0.153 ER visits, 2.116 outpatient office visits, and 3.730 other outpatient services) compared to controls (p < 0.001). Differences increased substantially in the presence of PHN. Total mean incremental healthcare costs for HZ-cases were $1308 and quadrupled to $5463 in those with PHN (both p < 0.001). Overall, primary cost drivers were outpatient prescriptions and other outpatient services. For those with PHN, inpatient services also played a significant role.Limitations: This study was limited to only those individuals with US commercial health coverage or private Medicare supplemental coverage; therefore, results of this analysis may not be generalizable to HZ patients outside of the US, with other health insurance or without coverage.Conclusions: HZ presents a significant economic and resource burden on the US healthcare system among immunocompetent patients of nearly all ages, particularly when complicated by PHN.
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