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Real-world treatment patterns and healthcare costs among biologic-naive patients initiating apremilast or biologics for the treatment of psoriasis.

Abstract：

OBJECTIVE:This study compared real-world treatment patterns and healthcare costs among biologic-naive psoriasis patients initiating apremilast or biologics. METHODS:A retrospective cohort study was conducted using the Optum Clinformatics™ claims database. Patients with psoriasis were selected if they had initiated apremilast or biologics between January 1, 2014, and December 31, 2015; had 12 months of pre-index and post-index continuous enrollment in the database; and were biologic-naive. The index date was defined as the date of the first claim for apremilast or biologic, and occurred between January 1, 2014, and December 31, 2015. Treatment persistence was defined as continuous treatment without a > 60-day gap in therapy (discontinuation) or a switch to a different psoriasis treatment during the 12-month post-index period. Adherence was defined as a medication possession ratio (MPR) of ≥ 80% while persistent on the index treatment. Persistence-based MPR was defined as the number of days with the medication on hand measured during the patients' period of treatment persistence divided by the duration of the period of treatment persistence. Because patients were not randomized, apremilast patients were propensity score matched up to 1:2 to biologic patients to adjust for possible selection bias. Treatment persistence/adherence and all-cause healthcare costs were evaluated. Cost differences were determined using Wilcoxon rank-sum tests. RESULTS:In all, 343 biologic-naive patients initiating apremilast were matched to 680 biologic-naive patients initiating biologics. After matching, patient characteristics were similar between cohorts. Twelve-month treatment persistence was similar for biologic-naive patients initiating apremilast vs biologics (32.1% vs 33.2%; p = 0.7079). While persistent on therapy up to 12 months, per-patient per-month (PPPM) total healthcare costs were significantly lower among biologic-naive cohorts initiating apremilast vs biologics ($2,214 vs $5,184; p < 0.0001). Likewise, PPPM costs while persistent on therapy were significantly lower among patients initiating apremilast vs biologics, whether they switched treatments ($2,475 vs $4,422; p < 0.0001), remained persistent ($2,279 vs $3,883; p < 0.0001), or discontinued but did not switch treatments ($2,104 vs $6,294; p < 0.0001). LIMITATIONS:Data were limited to individuals with United Healthcare commercial and Medicare Advantage insurance plans, and may not be generalizable to psoriasis patients with other insurance or without health insurance coverage. CONCLUSION:Biologic-naive patients with similar patient characteristics receiving apremilast vs biologics had significantly lower PPPM costs, even when they switched to biologics during the 12-month post-index period. These results may be useful to payers and providers seeking to optimize psoriasis care while reducing healthcare costs.

journal_name

J Med Econ

journal_title

Journal of medical economics

authors

Wu JJ,Pelletier C,Ung B,Tian M

doi

10.1080/13696998.2019.1571500

subject

Has Abstract

pub_date

2019-04-01 00:00:00

pages

365-371

issue

eissn

1369-6998

issn

1941-837X

journal_volume

pub_type

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Real-world treatment patterns and healthcare costs among biologic-naive patients initiating apremilast or biologics for the treatment of psoriasis.