摘要

<正>原文出处GUYATT G,OXMAN A D,SULTAN S,et al. GRADE guidelines:11.Making an overall rating of confidence in effect estimates for a single outcome and for all outcomes. J Clin Epidemiol,2013,66(2):151-157.原文通讯作者GUYATT G,email:guyatt@mcmaster.ca说明本文解读者根据对原文理解做解读,可能不完全反映原文的思想。1主要内容介绍GRADE证据体中对疗效可信度评估的5个降级因素(偏倚风险[1]、不精确性[2]、