Table 4.

Alternative analysis^a of total accuracy in priority level using Medical Index and RETTS-A (n = 1278)

	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%)

p = 0.000

^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)