A registry-based observational study comparing emergency calls assessed by emergency medical dispatchers with and without support by registered nurses

Table 4 Proportion of calls dispatched with a priority in concordance with the ambulance personnel’s assessment, and proportions of over/undertriage

	n (%)*	Ambulance priority level, RETTS				Dispatched priority in concordance with ambulance personnel's assessment	Overtriage	Undertriage
	n (%)*	Red	Orange	Yellow	Green		Overtriage	Undertriage
Dispatched priority level, Swedish Index
1
EMD	9502 (42.5)	1809	3659	3005	1029	5468	4034	X
EMD + RN	231 (19.9)	38	76	86	31	114	117	X
2
EMD	11,640 (52.1)	860	3379	5531	1870	5531	1870	4239
EMD + RN	734 (63.4)	35	192	318	189	318	189	227
3
EMD	1203 (5.4)	58	247	578	320	320	X	883
EMD + RN	193 (16.7)	10	34	100	49	49	X	144
Total n (%)
EMD	22,345 (100%)					11,319 (50.7%)	5904 (26.4%)	5122 (22.9%)
EMD + RN	1158 (100%)					481 (41.5%)	306 (26.4%)	371 (32.0%)

The proportion of calls dispatched with a priority in concordance with the ambulance personnel's assessment was calculated based on the defined corresponding priorities in Swedish Index and RETTS: Priority 1 corresponding to RETTS Red/Orange, Priority 2 corresponding to RETTS Yellow, Priority 3 corresponding to RETTS Green. Over- and undertriage were defined as the dispatched priority being higher or lower respectively than the priority as assessed by the ambulance personnel
Swedish Index, The Swedish Index to Emergency Medical Assistance; RETTS, The Rapid Emergency Triage and Treatment System; EMD, Emergency medical dispatcher; RN, Registered nurse
*(%) refers to the proportion of all calls dispatched by EMD (n = 22,345) and EMD + RN (n = 1158) respectively

ISSN: 1757-7241