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Table 2 Field triage precision by category of prehospital care before and after introduction of TTA protocol

From: Precision of field triage in patients brought to a trauma centre after introducing trauma team activation guidelines

  Without TTA protocol (1996) With TTA protocol (2001 – 2007)
  Overtriage Undertriage Overtriage Undertriage
All patients 58% 11% 55% 10%
Anaesthetist admitted 44% 6% 35% 2%
Paramedic admitted 67% 17% 66% 17%