Objective: To describe patient characteristics, concordance with recommended postdischarge care, and risk of repeat events within a cohort of children discharged from an emergency department (ED) or hospital for food-induced anaphylaxis in the US.
Study design: Children (aged <18 years) with an ED visit/hospitalization for food-induced anaphylaxis were identified from the 2002-2008 Truven Health MarketScan databases using an expanded International Classification of Diseases, Ninth Revision, Clinical Modification diagnosis code algorithm. The initial identified ED visit/hospitalization was the index event. Claims data for the children with continuous medical and prescription coverage for ≥1 year before and after the index event were evaluated. Analyses included the rates of 1-year postdischarge epinephrine autoinjector (EAI) prescription fills, allergist/immunologist visits, and repeat events.
Results: The study cohort comprised 1009 patients with an average age of 7 years, including 58% males, 27% with a history of asthma, and 90% discharged from an ED. Within 1 year postdischarge, 83% had an EAI prescription fill (69% within 1 week postdischarge), 43% had a specialist visit (51% within 4 weeks postdischarge), and 6.4% had evidence of another anaphylaxis-related ED visit/hospitalization.
Conclusion: Among children with food-induced anaphylaxis, within 1 year postdischarge from the ED or hospital, concordance was higher for EAI prescription fills than for allergist/immunologist visits. Subsequent ED visits/hospital stays for anaphylactic events were low. More research is needed to identify barriers between recommendations and physician/patient behaviors, as well as the impact of not following the recommendations on patient outcomes and healthcare costs.
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