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© 2013 Elsevier Editora Ltda. All rights reserved.

REV ASSOC MED BRAS. 2013;59(2):101

ASSOCIAÇÃO MÉDICA BRASILEIRA

REVISTA DA

Volume 58 • Número 6 • Novembro/Dezembro 2012 • ISSN 0104-4230 • ISSN 1806-9282 (On-line)

www.ramb.org.br

ARTIGOS

ARTIGOS ORIGINAIS _____________Qualidade da informação da internet disponível para pacientes em páginas em português ___________________________________________________________645 Acesso a informações de saúde na internet: uma questão de saúde pública? ______650 Maus-tratos contra a criança e o adolescente no Estado de São Paulo, 2009_______659 Obesidade e hipertensão arterial em escolares de Santa Cruz do Sul – RS, Brasil ___666 Bone mineral density in postmenopausal women with and without breast cancer ___673 Prevalence and factors associated with thoracic alterations in infants born prematurely __________________________________________________679 Análise espacial de óbitos por acidentes de trânsito, antes e após a Lei Seca, nas microrregiões do estado de São Paulo ___________________________________685 Sobrevida e complicações em idosos com doenças neurológicas em nutrição enteral ______________________________________________________691 Infliximab reduces cardiac output in rheumatoid arthritis patients without heart failure ______________________________________________________698 Análise dos resultados maternos e fetais dos procedimentos invasivos genéticos fetais: um estudo exploratório em Hospital Universitário _______________703 Frequência dos tipos de cefaleia no centro de atendimento terciário do Hospital das Clínicas da Universidade Federal de Minas Gerais __________________709

ARTIGO DE REVISÃO ______________Influência das variáveis nutricionais e da obesidade sobre a saúde e o metabolismo __714

EDITORIAL

Conclusão: como exibir a cereja do bolo 633

PONTO DE VISTA

Os paradoxos da medicina contemporânea 634

IMAGEM EM MEDICINAObstrução duodenal maligna: tratamento endoscópico paliativo utilizando prótese metálica autoexpansível 636

Gossypiboma 638

DIRETRIZES EM FOCO

Hérnia de disco cervical no adulto: tratamento cirúrgico 639

ACREDITAÇÃOAtualização em perda auditiva: diagnóstico radiológico 644 SEÇÕES ____________________________

www.ramb.org.br

Revista da

ASSOCIAÇÃO MÉDICA BRASILEIRA

Dear Editor,

Nita et al.,1 in the May/June issue of the journal, reported on

the cost‑effectiveness of using saxaglipitin as an additional therapy to metformin in patients with decompensated diabetes mellitus. Although initially the summary called my attention due to its conclusion, I believe that some limitations and doubts are applicable to the study.

In cost‑effectiveness studies, where costs must be detailed, the unit value specification is mandatory, as well as the calculation basis in relation to the drug dose and reference. This should be especially observed in simulations similar to that presented in the abovementioned article, as well as in any cost‑effectiveness analysis of a country’s health networks, using data from other economies and realities from totally different systems. Otherwise, a simple comparison of effectiveness of the standard dose of a drug to the detriment of an initial dose of another would show considerable bias.

Carrying out a simple price analysis, the annual cost for pioglitazone may be only 27.38% of the value reported by the study, and can also vary 257% between the available doses. I also report that the lack of results in relative terms to the economy of the population loss ratio can also lead to

Correspondence

Cost-effectiveness of saxaglipitin in the Brazilian

supplementary health system

Custo-efetividade da saxaglipitina no sistema de saúde suplementar

brasileiro

an inadequate discussion. Thus, I believe that the authors’ conclusions are fragile due to the indicated limitations and doubts, and I suggest that their analysis should be confirmed (or refuted) by a study with a more appropriate method and design.

R E F E R E N C E

1. Nita ME, Eliaschewitz FG, Ribeiro E, Asano E, Barbosa E, Takemoto M, et al. Cost‑effectiveness and budget impact of saxagliptine as additional therapy to metformin for the treatment of diabetes mellitus type 2 in the brazilian private health system. Rev Assoc Med Bras. 2012;58:294–301.

Ítalo Martins de Oliveira Hospital de Messejana Dr. Carlos Alberto Studart Gomes,

Fortaleza, CE, Brazil

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