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Human papillomavirus vaccine introduction in low-income and middle-income countries: guidance on the use of cost-effectiveness models
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Human papillomavirus vaccine introduction in low-income and middle-income countries: guidance on the use of cost-effectiveness models
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Journal Article
Human papillomavirus vaccine introduction in low-income and middle-income countries: guidance on the use of cost-effectiveness models
2011
Overview
Background
The World Health Organization (WHO) recommends that the cost effectiveness of introducing human papillomavirus (HPV) vaccination is considered before such a strategy is implemented. However, developing countries often lack the technical capacity to perform and interpret results of economic appraisals of vaccines. To provide information about the feasibility of using such models in a developing country setting, we evaluated models of HPV vaccination in terms of their capacity, requirements, limitations and comparability.
Methods
A literature review identified six HPV vaccination models suitable for low-income and middle-income country use and representative of the literature in terms of provenance and model structure. Each model was adapted by its developers using standardised data sets representative of two hypothetical developing countries (a low-income country with no screening and a middle-income country with limited screening). Model predictions before and after vaccination of adolescent girls were compared in terms of HPV prevalence and cervical cancer incidence, as was the incremental cost-effectiveness ratio of vaccination under different scenarios.
Results
None of the models perfectly reproduced the standardised data set provided to the model developers. However, they agreed that large decreases in type 16/18 HPV prevalence and cervical cancer incidence are likely to occur following vaccination. Apart from the Thai model (in which vaccine and non-vaccine HPV types were combined), vaccine-type HPV prevalence dropped by 75% to 100%, and vaccine-type cervical cancer incidence dropped by 80% to 100% across the models (averaging over age groups). The most influential factors affecting cost effectiveness were the discount rate, duration of vaccine protection, vaccine price and HPV prevalence. Demographic change, access to treatment and data resolution were found to be key issues to consider for models in developing countries.
Conclusions
The results indicated the usefulness of considering results from several models and sets of modelling assumptions in decision making. Modelling groups were prepared to share their models and expertise to work with stakeholders in developing countries.
Please see related article:
http://www.biomedcentral.com/1741-7007/9/55
Publisher
BioMed Central,BioMed Central Ltd,BMC
Subject
/ Female
/ Humans
/ Medicine
/ Papillomavirus Infections - economics
/ Papillomavirus Infections - epidemiology
/ Papillomavirus Infections - prevention & control
/ Papillomavirus Vaccines - economics
/ Papillomavirus Vaccines - immunology
/ Uterine Cervical Neoplasms - economics
