[Introduction to traditional meta-analysis].
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.
Unidad de Análisis y Generaciónde Evidencias en Salud Pública (UNAGESP), Instituto Nacional de Salud. Lima, Perú; OrganizaciónMédica para el Desarrollo de la Salud (ODDS PERU). Lima, Perú.
Rafael
R
Bolaños Díaz
OrganizaciónMédica para el Desarrollo de la Salud (ODDS PERU). Lima, Perú; Universidad Peruana Cayetano Heredia (UPCH). Lima, Perú.
María
M
Calderón Cahua
D003627:Data Interpretation, Statistical; D015201:Meta-Analysis as Topic