1
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Orellano P, Reynoso J, Salomón OD, Vezzani D. Dengue vaccine acceptance and willingness to pay: a systematic review and meta-analysis. Public Health 2023; 224:74-81. [PMID: 37741155 DOI: 10.1016/j.puhe.2023.08.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 06/28/2023] [Accepted: 08/18/2023] [Indexed: 09/25/2023]
Abstract
OBJECTIVE Dengue is the most important human vector-borne disease in terms of disease burden. A first dengue vaccine has recently been licenced, and others are in advanced stages of development. However, to date, none of these vaccines has achieved balanced efficacy and safety for all dengue serotypes. The aim of this systematic review and meta-analysis was to assess the global acceptance and willingness to pay for unspecified dengue vaccines. METHODS This systematic review and meta-analysis included cross-sectional and cohort studies that reported values for vaccine acceptance (percentage) and willingness to pay for currently available or hypothetical vaccines. These values were pooled using random-effects models for the acceptance, while weighted linear regression was chosen for willingness to pay. Heterogeneity between studies was assessed using prediction intervals (PIs), and a domain-based tool was used to assess the risk of bias. Subgroup and sensitivity analyses were performed where appropriate. This study was registered with PROSPERO (CRD42021255784). RESULTS We included 19 studies from the Americas and Asia in the quantitative meta-analysis. The risk of bias was mainly related to the selection of participants and to the assumptions about the safety and efficacy of the vaccines. The percentage of vaccine acceptance was 88.3% (95% CI: 81.0%-93.0%), with some heterogeneity between studies (80% PI: 52.9%-98.1%). Willingness to pay was US$ 46.7 (95% CI: 25.9-67.5) per vaccine recipient. There were differences between continents, with higher acceptance in the Americas. CONCLUSIONS We were able to obtain global estimates of vaccine acceptance and willingness to pay and identify the associated factors that influence these values. This knowledge is relevant for the planning of future vaccination strategies.
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Affiliation(s)
- P Orellano
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Universidad Tecnológica Nacional, Facultad Regional San Nicolás, San Nicolás, Provincia de Buenos Aires, Argentina.
| | - J Reynoso
- Hospital Interzonal General de Agudos "San Felipe", San Nicolás, Provincia de Buenos Aires, Argentina
| | - O D Salomón
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Instituto Nacional de Medicina Tropical (INMeT), Ministerio de Salud de la Nación, Puerto Iguazú, Provincia de Misiones, Argentina
| | - D Vezzani
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina; Instituto Multidisciplinario sobre Ecosistemas y Desarrollo Sustentable, Facultad de Cs Exactas, UNCPBA-CIC, Tandil, Provincia de Buenos Aires, Argentina
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2
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Xiao J, Wu Y, Wang M, Ma Z. Scope Issue in Contingent Valuation Studies of the COVID-19 Vaccine: The Case of China. APPLIED HEALTH ECONOMICS AND HEALTH POLICY 2022; 20:417-429. [PMID: 35001293 PMCID: PMC8743235 DOI: 10.1007/s40258-021-00706-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 11/25/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND Assessing the public's willingness to pay (WTP) for the coronavirus disease 2019 (COVID-19) vaccine by the contingent valuation (CV) method can provide a relevant basis for government pricing. However, the scope issue of the CV method can seriously affect the validity and reliability of the estimation results. AIM To examine whether there are scope issues in respondents' WTP for the COVID-19 vaccine and to further verify the validity and reliability of the CV estimate results. METHOD In this study, nine different CV double-bounded dichotomous choices (DBDC) hypothetical COVID-19 vaccine scenarios were designed using an orthogonal experimental design based on the vaccine's attributes. A total of 2450 samples from 31 provinces in Mainland China were collected to independently estimate the public's WTP in these nine scenarios with logistic, normal, log-logistic and log-normal parameter models. Based on this estimation, several external scope tests were designed to verify the validity and reliability of the CV estimate results. RESULTS In the 20 pairs of COVID-19 vaccine scenarios, 6 pairs of scenarios were classified as negative scope issues, therefore not passing the external scope test. Of the remaining 14 pairs of scenarios, only four pairs of scenarios completely passed the external scope test, and one pair of scenarios partially passed the external scope test. Significant negative scope and scope insensitivity issues were revealed. CONCLUSION In the context of a dynamic pandemic environment, the findings of this study reveal that the CV method may face difficulty in effectively estimating respondents' WTP for the COVID-19 vaccine. We suggest that future studies be cautious in applying the CV method to estimate the public's WTP for the COVID-19 vaccine.
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Affiliation(s)
- Jianhong Xiao
- School of Tourism and Geography Science, Qingdao University, Qingdao, China
| | - Yihui Wu
- School of Tourism and Geography Science, Qingdao University, Qingdao, China
| | - Min Wang
- Business College, Qingdao University, Qingdao, China
| | - Zegang Ma
- Department of Physiology, School of Basic Medicine, Qingdao University, Qingdao, China
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3
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Vo NX, Huyen Nguyen TT, Van Nguyen P, Tran QV, Vo TQ. Using Contingent Valuation Method to Estimate Adults' Willingness to Pay for a Future Coronavirus 2019 Vaccination. Value Health Reg Issues 2021; 24:240-246. [PMID: 33895642 PMCID: PMC8062218 DOI: 10.1016/j.vhri.2021.01.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 01/10/2021] [Accepted: 01/27/2021] [Indexed: 01/30/2023]
Abstract
Objectives Vaccines are recognized as the most effective strategy for long-term prevention of coronavirus disease 2019 (COVID-19) because they can reduce morbidity and mortality. The purpose of the present study was to evaluate willingness to pay (WTP) for a future COVID-19 vaccination among young adults in Southern Vietnam. Methods A cross-sectional, descriptive, and analytic study was undertaken with data collected from a community-based survey in southern Vietnam for 2 weeks in May 2020. The contingent valuation method was used to estimate WTP for COVID-19 vaccine. The average amount that respondents were willing to pay for the vaccine was US$ 85.9 2 ± 69.01. Results We also found the differences in WTP according to sex, living area, monthly income, and the level of self-rated risk of COVID-19. Conclusion Our findings possibly contribute to the implementation of a pricing policy when the COVID-19 vaccine is introduced in Vietnam.
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Affiliation(s)
- Nam Xuan Vo
- Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam
| | - Tram Thi Huyen Nguyen
- Department of Pharmacy, Ear-Nose-Throat Hospital in Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Pol Van Nguyen
- Department of Economic and Administrative Pharmacy, Faculty of Pharmacy, Pham Ngoc Thach University of Medicine, Ho Chi Minh City, Vietnam
| | - Quang Vinh Tran
- Department of Economic and Administrative Pharmacy, Faculty of Pharmacy, Pham Ngoc Thach University of Medicine, Ho Chi Minh City, Vietnam
| | - Trung Quang Vo
- Department of Economic and Administrative Pharmacy, Faculty of Pharmacy, Pham Ngoc Thach University of Medicine, Ho Chi Minh City, Vietnam.
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4
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Harapan H, Wagner AL, Yufika A, Winardi W, Anwar S, Gan AK, Setiawan AM, Rajamoorthy Y, Sofyan H, Vo TQ, Hadisoemarto PF, Müller R, Groneberg DA, Mudatsir M. Willingness-to-pay for a COVID-19 vaccine and its associated determinants in Indonesia. Hum Vaccin Immunother 2020; 16:3074-3080. [PMID: 32991230 DOI: 10.1080/21645515.2020.1819741] [Citation(s) in RCA: 97] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
How countries, particularly low- and middle-income economies, should pay the coronavirus disease 2019 (COVID-19) vaccine is an important and understudied issue. We undertook an online survey to measure the willingness-to-pay (WTP) for a COVID-19 vaccine and its determinants in Indonesia. The WTP was assessed using a simple dichotomous contingent valuation approach and a linear regression model was used to assess its associated determinants. There were 1,359 respondents who completed the survey. In total, 78.3% (1,065) were willing to pay for the COVID-19 vaccine with a mean and median WTP of US$ 57.20 (95%CI: US$ 54.56, US$ 59.85) and US$ 30.94 (95%CI: US$ 30.94, US$ 30.94), respectively. Being a health-care worker, having a high income, and having high perceived risk were associated with higher WTP. These findings suggest that the WTP for a COVID-19 vaccine is relatively high in Indonesia. This WTP information can be used to construct a payment model for a COVID-19 vaccine in the country. Nevertheless, to attain higher vaccine coverage, it may be necessary to partially subsidize the vaccine for those who are less wealthy and to design health promotion materials to increase the perceived risk for COVID-19 in the country.
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Affiliation(s)
- Harapan Harapan
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala , Banda Aceh, Indonesia.,Tropical Disease Centre, School of Medicine, Universitas Syiah Kuala , Banda Aceh, Indonesia.,Department of Microbiology, School of Medicine, Universitas Syiah Kuala , Banda Aceh, Indonesia
| | - Abram L Wagner
- Department of Epidemiology, University of Michigan , Ann Arbor, MI, USA
| | - Amanda Yufika
- Department of Family Medicine, School of Medicine, Universitas Syiah Kuala , Banda Aceh, Indonesia
| | - Wira Winardi
- Department of Pulmonology and Respiratory Medicine, School of Medicine, Universitas Syiah Kuala , Banda Aceh, Indonesia
| | - Samsul Anwar
- Department of Statistics, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala , Banda Aceh, Indonesia
| | - Alex Kurniawan Gan
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala , Banda Aceh, Indonesia
| | - Abdul M Setiawan
- Department of Microbiology, Faculty of Medicine and Health Sciences, Maulana Malik Ibrahim State Islamic University of Malang , Malang, Indonesia
| | - Yogambigai Rajamoorthy
- Department of Economics, Faculty of Accountancy and Management, Universiti Tunku Abdul Rahman , Kajang, Malaysia
| | - Hizir Sofyan
- Department of Statistics, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala , Banda Aceh, Indonesia
| | - Trung Quang Vo
- Department of Economic and Administrative Pharmacy, Faculty of Pharmacy, Pham Ngoc Thach University of Medicine , Ho Chi Minh City, Vietnam
| | | | - Ruth Müller
- Department Biomedical Sciences, Institute of Tropical Medicine , Antwerp, Belgium.,Department of Tropical Medicine and Public Health, The Institute of Occupational, Social and Environmental Medicine, Goethe University , Frankfurt, Germany
| | - David A Groneberg
- Department of Tropical Medicine and Public Health, The Institute of Occupational, Social and Environmental Medicine, Goethe University , Frankfurt, Germany
| | - Mudatsir Mudatsir
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala , Banda Aceh, Indonesia.,Tropical Disease Centre, School of Medicine, Universitas Syiah Kuala , Banda Aceh, Indonesia.,Department of Microbiology, School of Medicine, Universitas Syiah Kuala , Banda Aceh, Indonesia
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5
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Harapan H, Wagner AL, Yufika A, Winardi W, Anwar S, Gan AK, Setiawan AM, Rajamoorthy Y, Sofyan H, Mudatsir M. Acceptance of a COVID-19 Vaccine in Southeast Asia: A Cross-Sectional Study in Indonesia. Front Public Health 2020; 8:381. [PMID: 32760691 PMCID: PMC7372105 DOI: 10.3389/fpubh.2020.00381] [Citation(s) in RCA: 359] [Impact Index Per Article: 89.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 06/30/2020] [Indexed: 12/21/2022] Open
Abstract
Introduction: Several vaccine candidates are being clinically tested in response to the 2019 coronavirus disease (COVID-19) pandemic. This study was conducted to assess the acceptance of a 50 or 95% effective COVID-19 vaccine, when it becomes available in southeast Asia, among the general population in Indonesia. Methods: A cross-sectional online survey was conducted between March 25 and April 6, 2020. Participants were asked if they would accept a free vaccine which was 95 or 50% effective. Using a logistic regression model, we assessed the associations between sociodemographic characteristics, exposure to COVID-19 information, or perceived risk of infection with acceptance of a hypothetical COVID-19 vaccine. Results: Among 1,359 respondents, 93.3% of respondents (1,268/1,359) would like to be vaccinated for a 95% effective vaccine, but this acceptance decreased to 67.0% (911/1,359) for a vaccine with 50% effectiveness. For a 95% effective vaccine, being a healthcare worker and having a higher perceived risk of COVID-19 infection were associated with higher acceptance, adjusted odds ratio (aOR): 2.01; 95%CI: 1.01, 4.00 and aOR: 2.21; 95%CI: 1.07, 4.59, respectively; compared to civil servants, being retired was associated with less acceptance (aOR: 0.15; 95%CI: 0.04, 0.63). For a 50% effective vaccine, being a healthcare worker was also associated with greater acceptance, aOR: 1.57; 95%CI: 1.12, 2.20. Conclusion: Acceptance of a COVID-19 vaccine was highly influenced by the baseline effectiveness of the vaccine. Preparing the general population to accept a vaccine with relatively low effectiveness may be difficult.
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Affiliation(s)
- Harapan Harapan
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
- Tropical Disease Centre, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
- Department of Microbiology, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Abram L. Wagner
- Department of Epidemiology, University of Michigan, Ann Arbor, MI, United States
| | - Amanda Yufika
- Department of Family Medicine, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Wira Winardi
- Department of Pulmonology and Respiratory Medicine, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Samsul Anwar
- Department of Statistics, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Alex Kurniawan Gan
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Abdul Malik Setiawan
- Department of Microbiology, Faculty of Medicine and Health Sciences, Maulana Malik Ibrahim State Islamic University of Malang, Malang, Indonesia
| | - Yogambigai Rajamoorthy
- Department of Economics, Faculty of Accountancy and Management, Universiti Tunku Abdul Rahman, Cheras, Malaysia
| | - Hizir Sofyan
- Department of Statistics, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Mudatsir Mudatsir
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
- Tropical Disease Centre, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
- Department of Microbiology, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
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6
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Harapan H, Wagner AL, Yufika A, Winardi W, Anwar S, Gan AK, Setiawan AM, Rajamoorthy Y, Sofyan H, Mudatsir M. Acceptance of a COVID-19 Vaccine in Southeast Asia: A Cross-Sectional Study in Indonesia. Front Public Health 2020; 8:381. [PMID: 32760691 DOI: 10.3389/fpubh.2020.00381/full] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 06/30/2020] [Indexed: 05/25/2023] Open
Abstract
Introduction: Several vaccine candidates are being clinically tested in response to the 2019 coronavirus disease (COVID-19) pandemic. This study was conducted to assess the acceptance of a 50 or 95% effective COVID-19 vaccine, when it becomes available in southeast Asia, among the general population in Indonesia. Methods: A cross-sectional online survey was conducted between March 25 and April 6, 2020. Participants were asked if they would accept a free vaccine which was 95 or 50% effective. Using a logistic regression model, we assessed the associations between sociodemographic characteristics, exposure to COVID-19 information, or perceived risk of infection with acceptance of a hypothetical COVID-19 vaccine. Results: Among 1,359 respondents, 93.3% of respondents (1,268/1,359) would like to be vaccinated for a 95% effective vaccine, but this acceptance decreased to 67.0% (911/1,359) for a vaccine with 50% effectiveness. For a 95% effective vaccine, being a healthcare worker and having a higher perceived risk of COVID-19 infection were associated with higher acceptance, adjusted odds ratio (aOR): 2.01; 95%CI: 1.01, 4.00 and aOR: 2.21; 95%CI: 1.07, 4.59, respectively; compared to civil servants, being retired was associated with less acceptance (aOR: 0.15; 95%CI: 0.04, 0.63). For a 50% effective vaccine, being a healthcare worker was also associated with greater acceptance, aOR: 1.57; 95%CI: 1.12, 2.20. Conclusion: Acceptance of a COVID-19 vaccine was highly influenced by the baseline effectiveness of the vaccine. Preparing the general population to accept a vaccine with relatively low effectiveness may be difficult.
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Affiliation(s)
- Harapan Harapan
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
- Tropical Disease Centre, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
- Department of Microbiology, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Abram L Wagner
- Department of Epidemiology, University of Michigan, Ann Arbor, MI, United States
| | - Amanda Yufika
- Department of Family Medicine, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Wira Winardi
- Department of Pulmonology and Respiratory Medicine, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Samsul Anwar
- Department of Statistics, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Alex Kurniawan Gan
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Abdul Malik Setiawan
- Department of Microbiology, Faculty of Medicine and Health Sciences, Maulana Malik Ibrahim State Islamic University of Malang, Malang, Indonesia
| | - Yogambigai Rajamoorthy
- Department of Economics, Faculty of Accountancy and Management, Universiti Tunku Abdul Rahman, Cheras, Malaysia
| | - Hizir Sofyan
- Department of Statistics, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Mudatsir Mudatsir
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
- Tropical Disease Centre, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
- Department of Microbiology, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
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7
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Mudatsir M, Anwar S, Fajar JK, Yufika A, Ferdian MN, Salwiyadi S, Imanda AS, Azhars R, Ilham D, Timur AU, Sahputri J, Yordani R, Pramana S, Rajamoorthy Y, Wagner AL, Jamil KF, Harapan H. Willingness-to-pay for a hypothetical Ebola vaccine in Indonesia: A cross-sectional study in Aceh. F1000Res 2019; 8:1441. [PMID: 32399182 PMCID: PMC7194337 DOI: 10.12688/f1000research.20144.2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/29/2020] [Indexed: 11/20/2022] Open
Abstract
Background: Some Ebola vaccines have been developed and tested in phase III clinical trials. However, assessment of whether public have willingness to purchase or not, especially in unaffected areas, is lacking. The aim of this study was to determine willingness to pay (WTP) for a hypothetical Ebola vaccine in Indonesia. Methods: A cross-sectional study was conducted from 1 August to 30 December 2015 in five cities in Aceh province of Indonesia. Patients’ family members who visited outpatient departments were approached and interviewed about their sociodemographic characteristics, knowledge of Ebola, attitude towards vaccination practice and their WTP for a hypothetical Ebola vaccine. A multivariable linear regression model assessed the relationship between these explanatory variables and WTP. Results: During the study, 500 participants were approached and interviewed. There were 424 (84.8%) respondents who completed the interview and 74% (311/424) expressed their acceptance for an Ebola vaccine. There were 288 participants who were willing to pay for an Ebola vaccine (92.6% out of 311). The mean of WTP was US$2.08 (95% CI: 1.75-2.42). The final multivariable model indicated that young age, high educational attainment, working as a private employee, entrepreneur or civil servant (compared to farmers), being unmarried, and residing in a suburb (compared to a city) were associated with higher WTP. Conclusions: Although the proportion of the participants who would accept the Ebola vaccine was relatively high, the amount they were willing to pay for Ebola vaccine was very low. This finding would indicate the need of subsidies for Ebola vaccine in the country.
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Affiliation(s)
- Mudatsir Mudatsir
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia.,Tropical Diseases Centre, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia.,Department of Microbiology, School of Medicine, Universitas Syiah Kuala, Bnada Aceh, Indonesia
| | - Samsul Anwar
- Department of Statistics, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Jonny K Fajar
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Amanda Yufika
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia.,Department of Family Medicine, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Muhammad N Ferdian
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Salwiyadi Salwiyadi
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Aga S Imanda
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Roully Azhars
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Darul Ilham
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Arya U Timur
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Juwita Sahputri
- Department of Microbiology, Faculty of Medicine, Malikussaleh University, Lhokseumawe, Indonesia
| | | | | | - Yogambigai Rajamoorthy
- Department of Economics, Faculty of Accountancy and Management, Universiti Tunku Abdul Rahman, Selangor, Malaysia
| | - Abram L Wagner
- Department of Epidemiology, Department of Epidemiology, University of Michigan, Ann Arbor, USA
| | - Kurnia F Jamil
- Department of Internal Medicine, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Harapan Harapan
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia.,Tropical Diseases Centre, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia.,Department of Microbiology, School of Medicine, Universitas Syiah Kuala, Bnada Aceh, Indonesia
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8
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Mudatsir M, Anwar S, Fajar JK, Yufika A, Ferdian MN, Salwiyadi S, Imanda AS, Azhars R, Ilham D, Timur AU, Sahputri J, Yordani R, Pramana S, Rajamoorthy Y, Wagner AL, Jamil KF, Harapan H. Willingness-to-pay for a hypothetical Ebola vaccine in Indonesia: A cross-sectional study in Aceh. F1000Res 2019; 8:1441. [PMID: 32399182 PMCID: PMC7194337 DOI: 10.12688/f1000research.20144.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/12/2023] [Indexed: 06/24/2023] Open
Abstract
Background: Some Ebola vaccines have been developed and tested in phase III clinical trials. However, assessment of whether public have willingness to purchase or not, especially in unaffected areas, is lacking. The aim of this study was to determine willingness to pay (WTP) for a hypothetical Ebola vaccine in Indonesia. Methods: A cross-sectional study was conducted from 1 August to 30 December 2015 in five cities in Aceh province of Indonesia. Patients' family members who visited outpatient departments were approached and interviewed about their sociodemographic characteristics, knowledge of Ebola, attitude towards vaccination practice and their WTP for a hypothetical Ebola vaccine. A multivariable linear regression model assessed the relationship between these explanatory variables and WTP. Results: During the study, 500 participants were approached and interviewed. There were 424 (84.8%) respondents who completed the interview and 74% (311/424) expressed their acceptance for an Ebola vaccine. There were 288 participants who were willing to pay for an Ebola vaccine (92.6% out of 311). The mean of WTP was US$2.08 (95% CI: 1.75-2.42). The final multivariable model indicated that young age, high educational attainment, working as a private employee, entrepreneur or civil servant (compared to farmers), being unmarried, and residing in a suburb (compared to a city) were associated with higher WTP. Conclusions: Although the proportion of the participants who would accept the Ebola vaccine was relatively high, the amount they were willing to pay for Ebola vaccine was very low. This finding would indicate the need of subsidies for Ebola vaccine in the country.
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Affiliation(s)
- Mudatsir Mudatsir
- Tropical Diseases Centre, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
- Department of Microbiology, School of Medicine, Universitas Syiah Kuala, Bnada Aceh, Indonesia
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Samsul Anwar
- Department of Statistics, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Jonny Karunia Fajar
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Amanda Yufika
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
- Department of Family Medicine, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Muhammad N. Ferdian
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Salwiyadi Salwiyadi
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Aga S. Imanda
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Roully Azhars
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Darul Ilham
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Arya U. Timur
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Juwita Sahputri
- Department of Microbiology, Faculty of Medicine, Malikussaleh University, Lhokseumawe, Indonesia
| | | | | | - Yogambigai Rajamoorthy
- Department of Economics, Faculty of Accountancy and Management, Universiti Tunku Abdul Rahman, Selangor, Malaysia
| | - Abram L. Wagner
- Department of Epidemiology, Department of Epidemiology, University of Michigan, Ann Arbor, USA
| | - Kurnia F. Jamil
- Department of Internal Medicine, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Harapan Harapan
- Tropical Diseases Centre, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
- Department of Microbiology, School of Medicine, Universitas Syiah Kuala, Bnada Aceh, Indonesia
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
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9
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Mudatsir M, Anwar S, Fajar JK, Yufika A, Ferdian MN, Salwiyadi S, Imanda AS, Azhars R, Ilham D, Timur AU, Sahputri J, Yordani R, Pramana S, Rajamoorthy Y, Wagner AL, Jamil KF, Harapan H. Willingness-to-pay for a hypothetical Ebola vaccine in Indonesia: A cross-sectional study in Aceh. F1000Res 2019; 8:1441. [PMID: 32399182 DOI: 10.12688/f1000research.20144.1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/09/2019] [Indexed: 11/20/2022] Open
Abstract
Background: Some Ebola vaccines have been developed and tested in phase III clinical trials. However, assessment of whether public have willingness to purchase or not, especially in unaffected areas, is lacking. The aim of this study was to determine willingness to pay (WTP) for a hypothetical Ebola vaccine in Indonesia. Methods: A cross-sectional study was conducted from 1 August to 30 December 2015 in five cities in Aceh province of Indonesia. Patients' family members who visited outpatient departments were approached and interviewed about their sociodemographic characteristics, knowledge of Ebola, attitude towards vaccination practice and their WTP for a hypothetical Ebola vaccine. A multivariable linear regression model assessed the relationship between these explanatory variables and WTP. Results: During the study, 500 participants were approached and interviewed. There were 424 (84.8%) respondents who completed the interview and 74% (311/424) expressed their acceptance for an Ebola vaccine. There were 288 participants who were willing to pay for an Ebola vaccine (92.6% out of 311). The mean of WTP was US$2.08 (95% CI: 1.75-2.42). The final multivariable model indicated that young age, high educational attainment, working as a private employee, entrepreneur or civil servant (compared to farmers), being unmarried, and residing in a suburb (compared to a city) were associated with higher WTP. Conclusions: Although the proportion of the participants who would accept the Ebola vaccine was relatively high, the amount they were willing to pay for Ebola vaccine was very low. This finding would indicate the need of subsidies for Ebola vaccine in the country.
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Affiliation(s)
- Mudatsir Mudatsir
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia.,Tropical Diseases Centre, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia.,Department of Microbiology, School of Medicine, Universitas Syiah Kuala, Bnada Aceh, Indonesia
| | - Samsul Anwar
- Department of Statistics, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Jonny K Fajar
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Amanda Yufika
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia.,Department of Family Medicine, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Muhammad N Ferdian
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Salwiyadi Salwiyadi
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Aga S Imanda
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Roully Azhars
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Darul Ilham
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Arya U Timur
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Juwita Sahputri
- Department of Microbiology, Faculty of Medicine, Malikussaleh University, Lhokseumawe, Indonesia
| | | | | | - Yogambigai Rajamoorthy
- Department of Economics, Faculty of Accountancy and Management, Universiti Tunku Abdul Rahman, Selangor, Malaysia
| | - Abram L Wagner
- Department of Epidemiology, Department of Epidemiology, University of Michigan, Ann Arbor, USA
| | - Kurnia F Jamil
- Department of Internal Medicine, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia
| | - Harapan Harapan
- Medical Research Unit, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia.,Tropical Diseases Centre, School of Medicine, Universitas Syiah Kuala, Banda Aceh, Indonesia.,Department of Microbiology, School of Medicine, Universitas Syiah Kuala, Bnada Aceh, Indonesia
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