Study design and population
This study was a retrospective observational cohort study of patients discharged after an emergency visit with an EAI prescription from either of two affiliated pediatric EDs, an academic urban pediatric ED with an annual census of 90,000 patient visits and a satellite urban free-standing pediatric ED with an additional 30,000 annual patient visits. We included data from patients that presented over a 22-month period from January 1,2018 to October 31, 2019. Patients were excluded if they were not prescribed an EAI or if we could not determine their prescription fill status. EAI prescription fill status could be indeterminate because the patient received a handwritten prescription, had a prescription called into the pharmacy by phone or used a pharmacy that did not participate inSureScriptse-prescribing during the study period. The Institutional Review Board approved this study.