Single-reviewer abstract screening missed 13 percent of relevant studies: a crowd-based, randomized controlled trial

ObjectivesTo determine the accuracy of single-reviewer screening in correctly classifying abstracts as relevant or irrelevant for literature reviews.Study Design and SettingWe conducted a crowd-based, parallel-group randomized controlled trial. Using the Cochrane Crowd platform, we randomly assigned eligible participants to 100 abstracts each of a pharmacological or a public health topic. After completing a training exercise, participants...