Resumen

BOLANOS DIAZ, Rafael  y  CALDERON CAHUA, María. Introduction to traditional meta-analysis. Rev. gastroenterol. Perú [online]. 2014, vol.34, n.1, pp.45-51. ISSN 1022-5129.

Currently there is a steady growth of scientific information in medicine which unable complete knowledge of all the articles published. Meta-analysis are studies that aim to compile all available information, grouping them according to a specific outcome, and evaluating it through methodological quality tools. Its main objective is to estimate a summary effect size after combining the individual results of each study selected under a sufficiently valid statistical analysis. The following article is to describe the basic and fundamental concepts of traditional meta-analysis, taking this information as input for future reviews of “advanced methods in meta-analysis”, such as indirect meta-analysis or network analysis.

Palabras clave : Meta-analysis; Access to information; Scientific and technical publications.

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