Mostrando entradas con la etiqueta Systematic reviews. Mostrar todas las entradas
Mostrando entradas con la etiqueta Systematic reviews. Mostrar todas las entradas

lunes, 30 de octubre de 2017

Revisiones sistemáticas en anestesia /Systematic reviews in anesthesia

Octubre 30, 2017. No. 2897

  


Heterogeneidad de los estudios en revisiones sistemáticas de anestesiología: revisión metaepidemiológica y propuesta de mapeo de evidencia.
Heterogeneity of studies in anesthesiology systematic reviews: a meta-epidemiological reviewand proposal for evidence mapping.
Br J Anaesth. 2017 Nov 1;119(5):874-884. doi: 10.1093/bja/aex251.
Abstract
Heterogeneity among the primary studies included in a systematic review (SR) is one of the most challenging considerations for systematic reviewers. Current practices in anaesthesiology SRs have not been evaluated, but traditional methods may not provide sufficient information to evaluate the true nature of these differences. We address these issues by examining the practices for evaluating heterogeneity in anesthesiology reviews. Also, we propose a mapping method for presenting heterogeneous aspects of the primary studies in SRs.We evaluated heterogeneity practices reported in SRs published in highly ranked anesthesiology journals and Cochrane reviews. Elements extracted from the SRs included heterogeneity tests, models used, analyses conducted, plots used, and I2 values. Additionally, we selected a SR to develop an evidence map in order to display clinical heterogeneity.Our statistical analysis showed 150/207 SRs reporting a test for statistical heterogeneity. Plots were used in 138 reviews to display heterogeneity. Subgroup analyses were the most commonly reported analysis (54%). Meta-regression and sensitivity analyses were used sparingly (25%; 23% respectively). A random effects model was most commonly reported (33%). Heterogeneity statistics across meta-analyses suggested that, in our sample, the majority (55%) did not present sufficient heterogeneity to be of great concern. Cochrane reviews (n=58) were also analysed. Plots were used in 88% of Cochrane reviews. Subgroup analysis was used in 59% Cochrane reviews, while sensitivity analysis was used in 62%.Many reviews did not provide sufficient detail regarding heterogeneity. We are calling for improvement to reporting practices.

XXVII Congreso Peruano de Anestesiología
Lima, Noviembre 2-4, 2017
LI Congreso Mexicano de Anestesiología
Mérida Yucatán, Noviembre 21-25, 2017
Like us on Facebook   Follow us on Twitter   Find us on Google+   View our videos on YouTube 
Anestesiología y Medicina del Dolor

52 664 6848905