Cost-effectiveness analysis of anti-influenza drugs in adult outpatient settings in Japan

Naoto Nakagawa (), Satoru Harada, Kiyohito Morita, Akimasa Morikawa, Yukinori Kanazawa and Leanne Lai
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Naoto Nakagawa: Ohu University
Satoru Harada: Ohu University
Kiyohito Morita: Ohu University
Akimasa Morikawa: Pharma Brie
Yukinori Kanazawa: Pharma Brie
Leanne Lai: Nova Southeastern University

SN Business & Economics, 2023, vol. 3, issue 12, 1-16

Abstract: Abstract The loss of productivity due to influenza virus (flu) infections (3 to 5 million cases globally), which can sometimes amount to as much as five working days, is a major socioeconomic issue. This study compares baloxavir marboxil’s cost-effectiveness with that of oseltamivir for influenza treatment in adult outpatient settings in Japan from the healthcare-payer perspective. A decision tree model was constructed with probabilities from CAPSTONE 1 for low-risk patients and CAPSTONE 2 for high-risk patients. Direct costs included medical costs and drug prices. Medical costs were obtained from the Japanese Medical fee index (2019 version). Effectiveness outcomes (quality-adjusted life-year [QALY]) were measured using the EQ-5D-5L questionnaire for adult patients who previously experienced flu infection. The time horizon was 14 days. Deterministic and probabilistic sensitivity analyses were performed to examine the robustness of the results. The base case analysis revealed oseltamivir dominated baloxavir marboxil for low-risk patients. However, the incremental cost-effectiveness ratio (ICER) for high-risk patients with body weight

Keywords: Baloxavir marboxil; Influenza virus infection; Cost-effectiveness analysis; QALY; Japan (search for similar items in EconPapers)
JEL-codes: I19 (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1007/s43546-023-00580-8

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