Scientific methodology: study design

[摘要] This paper aims to explain how to prepare a study project starting from literature evaluation and its critical analysis, how to choose study type as well as rating in levels according to Guidelines by AMB (Associação Médica Brasileira - Brazilian Medical Association) and CFM (Conselho Federal de Medicina - Brazilian Medical Council) approved and adopted by Education Ministry; also evaluates and comments each of these study types. Comments how to establish the question the study should answer and its importance in preparing all project items. Finally comments about the need of more studies performed with correct methodology being published in Brazil, in order to reach an international level.

[关键词] Methodology;Research;Health;Metodologia;Pesquisa;Saúde