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Our results demonstrate that more precise emergency medical dispatching, measured as dispatch priority, accuracy, and medical condition, was not obtained when an EMD had the support of an RN. EMDs working without an RN dispatched most of the calls with the two highest priorities, while when supported by an RN, the proportion of Priority 1 calls was substantially lower. Concordance in the assessment of priority was higher between the EMD and ambulance when the calls were assessed by the EMD alone. Undertriage was observed more often in calls assessed by an EMD with support from an RN…
