February 21, 2026 · Annals of emergency medicine · DOI: 10.1016/j.annemergmed.2025.11.018

Association Between Emergency Department Undertriage or Overtriage With Timeliness of Care and Patient Outcomes

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The authors aimed to investigate the relationship between emergency department (ED) mistriage—both undertriage and overtriage—and its impact on the timeliness of care and patient outcomes. Their analysis of over 5 million ED encounters revealed that mistriage was linked to small delays in care, with undertriaged high-acuity patients experiencing an 8-minute delay and overtriaged low-acuity patients facing a 3-minute delay and longer ED stays. The findings highlight the importance of accurate triage to improve patient care and outcomes.

Dana R Sax, E Margaret Warton, Dustin G Mark, Tina J Vitale-McDowell, Daniel D DiLena, Adina S Rauchwerger, Mary E Reed

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