RESUMO
En este artículo, el cuarto de una serie de cinco sobre revisiones sistemáticas, se muestra cómo recopilar y resumir los resultados de los estudios incluidos en una revisión. La síntesis de los datos extraídos consiste en tabular las características y la calidad de los estudios incluidos, y resumir los efectos y la magnitud de las asociaciones encontradas. Opcionalmente pueden utilizarse métodos estadísticos para explorar la heterogeneidad y sus fuentes. La magnitud de la heterogeneidad puede plantear la duda de si es viable realizar un metaanálisis general o es preferible hacerlo en subgrupos. Por último, se proporcionan recursos para evaluar las razones clínicas y metodológicas de la heterogeneidad (AU)
This fourth in a series of five articles on systematic reviews demonstrates how to compile and summarize the results of the studies included in a review. The synthesis of the extracted data consists of tabulating the characteristics, and the quality of the included studies, with the effects or the magnitude of the associations found in them. Statistical methods can be used to explore the differences between studies and the reasons for the inconsistencies. The magnitude of this heterogeneity influences whether it is feasible to perform an overall or subgroup meta-analysis. Finally, information is provided both to assessment of clinical and methodological reasons for heterogeneity (AU)
Assuntos
Humanos , Revisões Sistemáticas como Assunto , Metanálise como Assunto , Controle de QualidadeRESUMO
This fourth in a series of five articles on systematic reviews demonstrates how to compile and summarize the results of the studies included in a review. The synthesis of the extracted data consists of tabulating the characteristics, and the quality of the included studies, with the effects or the magnitude of the associations found in them. Statistical methods can be used to explore the differences between studies and the reasons for the inconsistencies. The magnitude of this heterogeneity influences whether it is feasible to perform an overall or subgroup meta-analysis. Finally, information is provided both to assessment of clinical and methodological reasons for heterogeneity.
