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. 2017 Dec;4(4):187-198.
doi: 10.1007/s40801-017-0119-4.

Economic Burden of Herpes Zoster and Post-Herpetic Neuralgia in Adults 60 Years of Age or Older: Results from a Prospective, Physician Practice-Based Cohort Study in Kushiro, Japan

Hiroyuki Nakamura  1 , Akiko Mizukami  2 , Koichi Adachi  3 , Sean Matthews  4 , Katsiaryna Holl  5   4 , Kazuhiro Asano  6 , Akihiro Watanabe  7 , Riri Adachi  8 , Mariko Kiuchi  9 , Keiju Kobayashi  10 , Keiko Sato  5 , Taizo Matsuki  5 , Toshihiko Kaise  5 , Desmond Curran  4
Affiliations

Economic Burden of Herpes Zoster and Post-Herpetic Neuralgia in Adults 60 Years of Age or Older: Results from a Prospective, Physician Practice-Based Cohort Study in Kushiro, Japan

Hiroyuki Nakamura et al. Drugs Real World Outcomes. 2017 Dec.

Abstract

Background and objective: Herpes zoster has a high incidence rate among people aged ≥ 60 years and can lead to serious complications such as post-herpetic neuralgia. There are currently no data on the economic burden of herpes zoster and post-herpetic neuralgia in Japan, and the objective of this study was to address this gap.

Methods: A total of 412 patients aged ≥ 60 years diagnosed with herpes zoster were recruited. Demographic, clinical, and healthcare resource utilization data on patients with herpes zoster or post-herpetic neuralgia collected via case report forms were used to estimate direct medical cost. Data obtained from a questionnaire survey among patients with herpes zoster/post-herpetic neuralgia were used to estimate transportation cost and productivity loss.

Results: The mean number of outpatient visits was 5.7. Prescription medications were the main cost driver accounting for 60% of the direct medical cost. The mean direct medical and total herpes zoster-related costs per patient were ¥43,925 and ¥57,112, respectively, and were higher in patients with post-herpetic neuralgia than in those with herpes zoster without complications. Direct medical cost represented 77%, productivity loss 19%, and transportation cost 4% of the total.

Conclusions: This is the first study of the economic burden of herpes zoster and post-herpetic neuralgia in Japan and it demonstrated substantial direct medical cost as a result of the multiple outpatient visits and prescription medications required. These findings provide baseline data for possible future economic evaluations of new herpes zoster/post-herpetic neuralgia interventions.

Trial registration: This cost analysis is part of a prospective, physician practice-based cohort study conducted between June 2013 and February 2015 in Kushiro, Japan (Clinicaltrials.gov identifier NCT01873365, registered on 6 June, 2013).

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Conflict of interest statement

Funding

GlaxoSmithKline Biologicals SA funded the study and was involved in all study activities and overall data management (collection, analysis, and interpretation), and funded all costs associated with developing and publishing this article. All authors had full access to the data, and the corresponding author was responsible for submission of the publication.

Conflict of interest

K. Adachi and K. Asano reported a study grant and personal fees for medical advice from the GSK group of companies during the conduct of the study and personal fees for lectures from the GSK group of companies outside the submitted work. RA and MK reported a study grant and personal fees for medical advice from the GSK group of companies during the conduct of the study. HN reported a study grant, personal fees for medical advice, and travel support to a congress presentation from the GSK group of companies during the conduct of the study. KK reported a study grant from the GSK group of companies during the conduct of the study. AW reported a study grant from the GSK group of companies during the conduct of the study and personal fees for lectures from the GSK group of companies outside the submitted work. KH, DC, KS, and TK are employees of the GSK group of companies and hold stock options or restricted shares. TM and AM are employees of the GSK group of companies. SM is a freelance consultant working on behalf of the GSK group of companies. KS, TK, TM, and AM received funding from Japan Vaccine Co. Ltd. (a 50%/50% Joint Venture of GSK/Daiichi Sankyo Company, Ltd.) for the conduct of the study.

Consent to participate

Informed consent was obtained from all individual participants included in the study.

Ethics approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study was reviewed by the Ethics Committee of Kushiro City General Hospital, Kushiro Red Cross Hospital, or Clinical Research Hospital Tokyo.

Data availability

The cost data were collected as part of an observational, prospective, physician practice-based cohort study of people 60 years of age or older conducted in Kushiro, Japan between June 2013 and February 2015. The details of the study are published elsewhere.

Trademark

Neurotropin® is a trademark of the Nippon Zoki Pharmaceutical Co. Ltd, Japan.

Figures

Fig. 1
Fig. 1
Breakdown of direct medical costs by a age group and b herpes zoster (HZ) status. PHN post-herpetic neuralgia
Fig. 2
Fig. 2
Indirect cost (productivity loss) by age group. N number of patients
Fig. 3
Fig. 3
Total costs by age group. N number of patients
See this image and copyright information in PMC

References

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