Serious conditions among conveyed and non-conveyed patients presenting with nonspecific chief complaints to the ambulance service

Table 1 Baseline characteristics for patients presenting with NSCs to the EMS grouped as conveyed or non-conveyed

de		Conveyed									Non-conveyed
		All conveyed			Serious condition present			Serious condition not present			All non-conveyed			Serious condition present			Serious condition not present
		n = 3780			n = 1334 (35.3%)			n = 2446			n = 964			n = 64 (6.6%)			n = 900
		n	Md (IQR)	(%)	n	Md (IQR)	(%)	n	Md (IQR)	(%)	n	Md (IQR)	(%)	n	Md (IQR)	(%)	n	Md (IQR)	(%)
Sex	Female	2033		53.8	682		51.1	1351		55.2	531		55.1	34		53.1	497		55.2
Sex	Male	1747		46.2	652		48.9	1095		44.8	433		44.9	30		46.9	403		44.8
Age			77 (62–87)			83 (74–89)			72 (53–84)			69 (47–84)			83 (69–87)			67 (44–84)
Time of day	07.00-14.59	1885		50.2	746		56.3	1139		46.9	312		32.7	29		45.3	283		31.8
	15.00-22.59	1319		35.1	461		34.8	858		35.3	367		38.4	22		34.4	345		38.7
	23.00-06.59	552		14.7	118		8.9	434		17.9	276		28.9	13		20.3	263		29.5
Priority Outbound	1	1423		37.6	463		34.7	960		39.2	413		42.8	22		34.4	391		43.4
	2	1870		49.5	675		50.6	1195		48.9	437		45.3	34		53.1	403		44.8
	3	487		12.9	196		14.7	291		11.9	114		11.8	8		12.5	106		11.8
Priority Inbound	1	412		10.9	235		17.6	177		7.2	-		-	-		-	-		-
	2	1804		47.7	644		48.3	1160		47.4	-		-	-		-	-		-
	3	1564		41.4	455		34.1	1109		45.3	-		-	-		-	-		-
CCI	Md		1			2			1			1			2			1
Admitted	Yes	2557		67.6	1334		100	1223		50	-		-	-		-	-		-
Admitted	No	1223		32.4	0		0	1223		50	-		-	-		-	-		-
24 h mortality		42		1.1	26		1.9	16		0.7	5		0.5	1		1.6	4		0.4
30 day mortality		372		9.8	269		20.2	103		4.2	32		3.3	11		17.2	21		2.3

NSC: non-specific chief complaint; EMS: emergency medical service; Md: median; IQR: interquartile range; CCI: Charlson comorbidity index

ISSN: 1471-227X