Cost-effectiveness of the third-agent class in treatment-naive human immunodeficiency virus-infected patients in Portugal.

<h4>Introduction</h4>Current Portuguese HIV treatment guidelines recommend initiating antiretroviral therapy with a regimen composed of two Nucleoside Reverse Transcriptase Inhibitors plus one Non-nucleoside Reverse Transcriptase Inhibitor (2NRTI+NNRTI) or two Nucleoside Reverse Transcri...

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Autores principales:	Filipa Aragão, José Vera, Inês Vaz Pinto
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b8f12f066a9a4ab9807a71fbb7652ce0
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spelling	oai:doaj.org-article:b8f12f066a9a4ab9807a71fbb7652ce02021-11-18T07:05:24ZCost-effectiveness of the third-agent class in treatment-naive human immunodeficiency virus-infected patients in Portugal.1932-620310.1371/journal.pone.0044774https://doaj.org/article/b8f12f066a9a4ab9807a71fbb7652ce02012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23028618/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Introduction</h4>Current Portuguese HIV treatment guidelines recommend initiating antiretroviral therapy with a regimen composed of two Nucleoside Reverse Transcriptase Inhibitors plus one Non-nucleoside Reverse Transcriptase Inhibitor (2NRTI+NNRTI) or two Nucleoside Reverse Transcriptase Inhibitors plus one boosted protease inhibitor (2NRTI+PI/r). Given the lower daily cost of NNRTI as the third agent when compared to the average daily costs of PI/r, it is relevant to estimate the long term impact of each treatment option in the Portuguese context.<h4>Methods</h4>We developed a microsimulation discrete events model for cost-effectiveness analysis of HIV treatment, simulating individual paths from ART initiation to death. Four driving forces determine the course of events: CD4+ cell count, viral load, resistance and adherence. Distributions of time to event are conditional to individuals' characteristics and past history. Time to event was modeled using parametric survival analysis using Stata 11®. Disease progression was structured according to therapy lines and the model was parameterized with cohort Portuguese observational data. All resources were valued at 2009 prices. The National Health Service's perspective was assumed considering a lifetime horizon and a 5% annual discount rate.<h4>Results</h4>In this analysis, initiating therapy with two Nucleoside Reverse Transcriptase Inhibitors plus one Non-nucleoside Reverse Transcriptase Inhibitor reduces the average number of switches by 17%, saves 19.573€ per individual and increases life expectancy by 1.7 months showing to be a dominant strategy in 57% of the simulations when compared to two Nucleoside Reverse Transcriptase Inhibitors plus one boosted protease inhibitor.<h4>Conclusion</h4>This study suggests that, when clinically valid, initiating therapy with two Nucleoside Reverse Transcriptase Inhibitors plus one Non-nucleoside Reverse Transcriptase Inhibitor is a cost-saving strategy and equally effective when compared to two Nucleoside Reverse Transcriptase Inhibitors plus one boosted protease inhibitor as the first regimen.Filipa AragãoJosé VeraInês Vaz PintoPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 9, p e44774 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Filipa Aragão José Vera Inês Vaz Pinto Cost-effectiveness of the third-agent class in treatment-naive human immunodeficiency virus-infected patients in Portugal.
description	<h4>Introduction</h4>Current Portuguese HIV treatment guidelines recommend initiating antiretroviral therapy with a regimen composed of two Nucleoside Reverse Transcriptase Inhibitors plus one Non-nucleoside Reverse Transcriptase Inhibitor (2NRTI+NNRTI) or two Nucleoside Reverse Transcriptase Inhibitors plus one boosted protease inhibitor (2NRTI+PI/r). Given the lower daily cost of NNRTI as the third agent when compared to the average daily costs of PI/r, it is relevant to estimate the long term impact of each treatment option in the Portuguese context.<h4>Methods</h4>We developed a microsimulation discrete events model for cost-effectiveness analysis of HIV treatment, simulating individual paths from ART initiation to death. Four driving forces determine the course of events: CD4+ cell count, viral load, resistance and adherence. Distributions of time to event are conditional to individuals' characteristics and past history. Time to event was modeled using parametric survival analysis using Stata 11®. Disease progression was structured according to therapy lines and the model was parameterized with cohort Portuguese observational data. All resources were valued at 2009 prices. The National Health Service's perspective was assumed considering a lifetime horizon and a 5% annual discount rate.<h4>Results</h4>In this analysis, initiating therapy with two Nucleoside Reverse Transcriptase Inhibitors plus one Non-nucleoside Reverse Transcriptase Inhibitor reduces the average number of switches by 17%, saves 19.573€ per individual and increases life expectancy by 1.7 months showing to be a dominant strategy in 57% of the simulations when compared to two Nucleoside Reverse Transcriptase Inhibitors plus one boosted protease inhibitor.<h4>Conclusion</h4>This study suggests that, when clinically valid, initiating therapy with two Nucleoside Reverse Transcriptase Inhibitors plus one Non-nucleoside Reverse Transcriptase Inhibitor is a cost-saving strategy and equally effective when compared to two Nucleoside Reverse Transcriptase Inhibitors plus one boosted protease inhibitor as the first regimen.
format	article
author	Filipa Aragão José Vera Inês Vaz Pinto
author_facet	Filipa Aragão José Vera Inês Vaz Pinto
author_sort	Filipa Aragão
title	Cost-effectiveness of the third-agent class in treatment-naive human immunodeficiency virus-infected patients in Portugal.
title_short	Cost-effectiveness of the third-agent class in treatment-naive human immunodeficiency virus-infected patients in Portugal.
title_full	Cost-effectiveness of the third-agent class in treatment-naive human immunodeficiency virus-infected patients in Portugal.
title_fullStr	Cost-effectiveness of the third-agent class in treatment-naive human immunodeficiency virus-infected patients in Portugal.
title_full_unstemmed	Cost-effectiveness of the third-agent class in treatment-naive human immunodeficiency virus-infected patients in Portugal.
title_sort	cost-effectiveness of the third-agent class in treatment-naive human immunodeficiency virus-infected patients in portugal.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/b8f12f066a9a4ab9807a71fbb7652ce0
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Cost-effectiveness of the third-agent class in treatment-naive human immunodeficiency virus-infected patients in Portugal.

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