Presence of undertriage and overtriage in simple triage and rapid treatment.

OBJECTIVE: We evaluated the use of the Simple Triage and Rapid Treatment (START) method by Emergency Medical Services (EMS) and hypothesized that EMS can categorize patients using the START algorithm accurately.

DESIGN: Retrospective Chart Review.

SETTING: Inner-city Tertiary-Care Institutional Emergency Department (ED).

PARTICIPANTS: Patients ≥ 18 years transported by EMS with a START color of Red, Yellow, or Green during the state triage tag exercise, October 9-15, 2011.

INTERVENTIONS: EMS assigned each patient a START triage tag. Chart review of the electronic EMS run sheets was performed by investigators to determine a START color.

MAIN OUTCOME MEASURES: START triage colors were re-categorized as Red = 1, Yellow = 2, and Green = 3. The difference between the investigators' color and EMS color were coded as: 0 for agreement in triage, -1 for undertriage by one category, -2 for undertriage by two categories, 1 for overtriage by one category, 2 for overtriage by two categories.

RESULTS: Of 224 participants, START triage colors were: Red = 7.1 percent, Yellow = 19.2 percent, Green = 73.7 percent. The mean difference in triage categories was 0.228 (95% CI: 0.114-0.311, p<.001). 71.0 percent of patients were triaged to the same category, 5.8 percent undertriaged by one category, 0 percent undertriaged by two categories, 17.9 percent overtriaged by one category, and 5.4 percent overtriaged by two categories.

CONCLUSION: EMS was more likely to overtriage using START. All patients who were overtriaged by two categories were ambulatory at the scene, which implies other findings not in START may affect triage.