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Comparison of health care resource utilization and costs among patients with GERD on once-daily or twice-daily proton pump inhibitor therapy



Original Research

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Authors: Mody R, Eisenberg D, Hou L, Kamat S, Singer J, Gerson LB

Published Date April 2013 Volume 2013:5 Pages 161 - 169
DOI: http://dx.doi.org/10.2147/CEOR.S41189

Reema Mody,1 Debra Eisenberg,2 Likun Hou,2 Siddhesh Kamat,2 Joseph Singer,2 Lauren B Gerson3

1Takeda Pharmaceuticals International Inc, Deerfield, IL, 2HealthCore Inc, Wilmington, DE, 3Stanford University School of Medicine, Stanford, CA, USA

Background: The purpose of this study was to assess differences in health care resource utilization and costs associated with once-daily and twice-daily proton pump inhibitor (PPI) therapy. Most patients with gastroesophageal reflux disease (GERD) achieve symptom control on once-daily PPI therapy, but approximately 20%–30% require twice-daily dosing.
Methods: Patients were ≥18 years of age with at least one medical claim for GERD and at least two PPI claims from HealthCore's Integrated Research Database (HIRDSM) during 2004–2009. Patients were continuously eligible for 12 months before and after the index date (date of first PPI claim). Based on PPI dosing throughout the post-index period (quantity of medication dispensed/number of days supply), patients were classified as once-daily (dose ≤ 1.5 pills per day) or twice-daily (≥1.5) PPI users.
Results: The study cohort included 248,386 patients with GERD (mean age 52.8 ± 13.93 years, 56% females) of whom 90% were once-daily and 10% were twice-daily PPI users. The Deyo-Charlson Comorbidity Index for once-daily and twice-daily PPI users was 0.70 ± 1.37 and 0.89 ± 1.54, respectively (P < 0.05). More once-daily patients had claims for Barrett's esophagus (5% versus 2%, P < 0.0001) than twice-daily patients. Post-index, higher proportions of twice-daily patients had at least one GERD-related inpatient visit (7% versus 5%), outpatient visit (60% versus 49%), and office visit (48% versus 38%) versus once-daily patients (P < 0.0001). Mean total GERD-related health care costs were $2065 ± $6636 versus $3749 ± $11,081 for once-daily and twice-daily PPI users, respectively (P < 0.0001).
Conclusion: Patients receiving twice-daily PPI therapy were likely to have more comorbid conditions and greater health care utilization and overall costs compared with patients using once-daily PPI therapy.

Keywords: gastroesophageal reflux disease, proton pump inhibitors, health care resource utilization, database analysis



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