A clinical prediction model to identify children at risk for revisits with serious illness to the emergency department: A prospective multicentre observational study.

Background: To develop a clinical prediction model to identify children at risk for revisits with serious illness to the emergency department.

Methods And Findings: A secondary analysis of a prospective multicentre observational study in five European EDs (the TRIAGE study), including consecutive children aged <16 years who were discharged following their initial ED visit ('index' visit), in 2012-2015. Standardised data on patient characteristics, Manchester Triage System urgency classification, vital signs, clinical interventions and procedures were collected.