Rethinking costs of psoriasis: 10% of patients account for nearly 40% of healthcare expenditures among enrollees with psoriasis in a U.S. health plan.

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Rethinking costs of psoriasis: 10% of patients account for nearly 40% of healthcare expenditures among enrollees with psoriasis in a U.S. health plan.

J Dermatolog Treat. 2017 Mar 20;:1-10

Authors: Armstrong AW, Zhao Y, Herrera V, Li Y, Bancroft T, Hull M, Altan A

Abstract
OBJECTIVE: To examine characteristics, healthcare utilization and costs among patients with psoriasis who have high medical costs.
METHODS: This is a retrospective study of patients with psoriasis with continuous enrollment from 1 January 2011 to 31 December 2013 in a large US health plan. Total paid 2012 healthcare costs excluding biologics (to identify costliest not due to biologic costs) were used to create cohorts representing the top 10% (T10) and bottom 90% (B90) of expenditures. Demographics, comorbidities, prescriptions, all-cause and psoriasis-related healthcare utilization and costs were compared between cohorts. Logistic regression identified demographic and clinical characteristics associated with the 2012 T10 cohort status.
RESULTS: 18,653 patients (mean age 48 years; 49% female) were included. Patients in the T10 group accounted for 26% (2011), 39% (2012) and 26% (2013) of all-cause costs including biologics and 13% (2011), 18% (2012) and 11% (2013) of psoriasis-related costs. Mean 2012 total costs were $58,030 for T10 vs. $10,295 for B90 (all-cause) and $10,475 vs. $5301 (psoriasis-related). T10 patients in 2012 filled more prescriptions and were more likely to use corticosteroids (57% vs. 31%); however, biologic use and costs were similar (any use: 23% vs. 24%; prescriptions: 1.5 vs. 1.7, biologic costs: $4959 vs. $5095). Compared with B90 patients, T10 patients were more likely to have hospitalizations (all-cause: 45% vs. 3%; psoriasis-related: 14% vs. 1%) and ER visits (all-cause: 53% vs. 21%; psoriasis-related: 3% vs. 1%), and more likely to have renal disease (odds ratio (OR) = 2.05), depression (OR =1.96), cardiovascular disease (OR =1.88), psoriatic arthritis (OR =1.57) and diabetes (OR =1.50) (all p < .05).
CONCLUSIONS: The T10 patient cohort in 2012 accounted for nearly 40% of overall healthcare expenditures. However, cost differences between the T10 and B90 patients were not attributable to psoriasis-related biologic treatment utilization and costs. The T10 patients had significantly more inpatient and emergency utilization, and comorbid medical conditions.

PMID: 28320213 [PubMed - as supplied by publisher]

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