The CROWN initiative: Journal editors invite researchers to develop core outcomes in women's health

摘要

Clinical trials, systematic reviews and guidelines compare beneficial and nonbeneficial outcomes following interventions. Often, however, various studies on a particular topic do not address the same outcomes, making it difficult to draw clinically useful conclusions when a group of studies is looked at as a whole [1], This problem was recently thrown into sharp focus by a systematic review of interventions for preterm birth prevention, which found that among 103 randomised trials, no fewer than 72 different outcomes were reported [2]. There is a growing recognition among clinical researchers that this variability undermines consistent synthesis of the evidence, and that what is needed is an agreed standardised collection of outcomes-a "core outcomes set"-for all trials in a specific clinical area [1].