O que é, para que serve e como se faz uma meta-análise?

Abstract

Esse trabalho apresenta uma breve introdução à técnica de meta-análise. Nosso público-alvo são estudantes de graduação e pós-graduação em Ciência Política. Metodologicamente, descrevemos o passo a passo do planejamento de um desenho de pesquisa meta-analítico e apresentamos dois exemplos aplicados sobre como fazer revisões sistemáticas. Com esse artigo, esperamos facilitar não só a compreensão, mas também a utilização da meta-análise. Em termos substantivos, esperamos contribuir para que as revisões de literatura sejam realizadas de forma sistemática, favorecendo a acumulação do conhecimento científico.

Body, gender and sexuality in teacher training: a meta-analysis

“…The metaanalysis has helped researchers advance in the production of knowledge in a systematic way, from the establishment of procedures that guide the results of the studies produced in an area of knowledge (FIGUEIREDO FILHO et al, 2014). In this sense, a metaanalysis can " [...] place different studies together in one database and use analytical and statistical methodolo gies to explain the variance of the results using common factors to the studies" (ROSCOE;JENKINS, 2005, p. 54), and a methodological procedure "[...] syn thesizes a certain amount of findings at a specific field" (FIGUEIREDO FILHO et al, 2014, p. 209).…”

“…The increase in the production of knowledge depends on how we accumu late information on a specific subject, this being the main inability of researchers to gather, process and synthesize different research results (GLASS;MCGAW;SMITH, 1981;FIGUEIREDO FILHO et al, 2014). In this perspective, the scientific researches of literature review are marked by the absence of a system that guarantees objectivity and the increase of the researched sources.…”

“…Methodologically, a systematic review with metaanalysis may have different strategies, from some specific features, such as area of knowledge, the place of research and what you want to search. However, in this study, we chose to use the planning developed by Cooper (2010) used in political science (FIGUEIREDO FILHO et al, 2014) in seven stages: identification and formulation of the research problem; collection of literature (books, articles, theses, papers, unpublished articles, etc. ); collection of information from each study; assessing the quality of studies; analysis and synthesis of the studies' results; interpretation of the collected data; presentation of search results.…”

“…Specifically, Small N Studies are the ones that have analyzed less than 20 participants and Large N Studies are the ones that had more than 50 participants. As for the Case Studies, it was not necessary to reclassify the category, since it refers to an intensive study of a specific reality, which affects the applicability of this category in other qualitative research, pointing out the casualties to generalize for categories of analysis (FIGUEIREDO FILHO et al, 2014). The use of historicalorganizational case studies (TRIVIÑOS, 1987;YIN, 2005) in some of the cases is justified based on the understanding of the themes of body, gender and sexuality at the microlevel (in the particularities of the researched educational institutions) in order to relate it to the macrolevel (policies and regional, national and international educational strategies).…”

<b>Profile of publications about functional foods in Brazilian journals: a scientometric analysis from 2000 to 2015 and an overview of Brazilian legislation

“…For science progress, the collection and organization of available information are essential, as well as a better explanation and/or development of reliable collection methods that guide future work in a certain direction (Wolf, 1986, Figueiredo Filho, Paranhos, Silva Junior, Rocha, & Alves, 2014. Functional foods have been used as marketing in the last decades due to increased concern between food/nutrition and the health maintenance (LopezVarela, Gonzalez-Gross, & Marcos, 2002, Siró, Kápolna, Kápolna, & Lugasi, 2008, Bandyopadhyay & Mandal, 2014.…”