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Table 4 Alternative analysisa of total accuracy in priority level using Medical Index and RETTS-A (n = 1278)

From: A comparison of two emergency medical dispatch protocols with respect to accuracy

  Dispatch protocol
Medical Index (n = 634) RETTS-A (n = 644)
Calls assigned correct priority 349 (55%) 423 (66%)
Calls assigned wrong priority 285 (45%) 221 (34%)
  1. p = 0.000
  2. aIn the alternative analysis RETTS-A was converted from a four graded to a three graded priority protocol. The conversion was made by merging the two highest priority levels in to one single priority level (red + orange)