Table 2.

Results of sudden cardiac arrest main indices and their disparities among city types, 2006-2016

Index	City type		2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016
Rate of CPR performed by layperson (%)	Local districts of Seoul metropolitan city		-	-	3.1a)	5.5a)	7.3a)	12.3a)	17.4a)	19.8a)	26.2a)	23.6a)	29.6a)
	Local districts of Metropolitan cityb)		-	-	1.9	2.8	3.5	5.0	6.4	8.8	12.8	15.2	17.7
	Cities with less than 300,000 people		-	-	1.7	1.1c)	1.7	2.3	4.3	5.5	10.4	11.4	15.9
	Urban rural consolidated cities		-	-	1.3	1.5	2.0	2.7	3.4	5.4	7.3	9.0	10.2
	Counties		-	-	1.1c)	1.2	1.4c)	1.8c)	2.8c)	4.4c)	6.4c)	7.7c)	9.5c)
	Disparity (max-min)		-	-	2.0	4.4	5.9	10.5	14.6	15.4	19.8	15.9	20.1
ROSC before hospital arrival (%)	Local districts of Seoul metropolitan city		1.2a)	1.3	1.5a)	2.6a)	2.0	2.8	4.1a)	4.5a)	5.0a)	6.2a)	7.7
	Local districts of Metropolitan cityb)		0.9	1.0	1.3	1.9	1.9	3.4a)	3.6	4.1	4.5	5.5	8.2a)
	Cities with less than 300,000 people		0.9	1.5a)	0.9c)	1.8	2.1a)	2.2c)	3.7	3.0	4.2	5.6	6.1
	Urban rural consolidated cities		0.9	1.0c)	1.0	1.7	1.6	2.9	2.9c)	2.9	3.4	3.9	4.9
	Counties		0.7c)	1.0c)	0.9c)	1.6c)	1.2c)	3.0	3.0	2.8c)	3.1c)	3.6c)	4.7c)
	Disparity (max-min)		0.5	0.5	0.6	1.0	0.9	1.2	1.2	1.7	1.9	2.6	3.5
Survival rate (%)	Local districts of Seoul metropolitan city	CR	3.9a)	5.0a)	4.9a)	6.4a)	6.3a)	8.3a)	8.8a)	9.2a)	8.6a)	9.8a)	11.4a)
		Std	4.0a)	5.0a)	4.9a)	6.5a)	6.5a)	8.5a)	9.3a)	9.9a)	9.8a)	11.2a)	12.9a)
	Local districts of Metropolitan cityb)	CR	2.9	3.0	2.9	3.8	3.8	4.6	5.0	5.7	5.6	6.8	8.4
		Std	2.8	2.9	2.9	3.8	3.9	4.7	5.2	6.0	6.1	7.5	9.2
	Cities with less than 300,000 people	CR	1.3	1.7	2.3	3.6	3.1	3.8	3.4	3.9	4.2	6.8	7.4
		Std	1.3	1.6	2.4	3.6	2.9	3.7	3.5	4.1	4.6	8.6	8.5
	Urban rural consolidated cities	CR	1.0	1.1	1.4	1.6	1.6	1.8	2.2	2.1	2.2	4.3	5.5
		Std	1.0	1.1	1.4	1.7	1.6	2.0	2.4	2.3	2.4	5.1	6.6
	Counties	CR	0.3c)	0.6c)	0.5c)	0.7c)	0.7c)	1.4c)	1.3c)	1.3c)	1.3c)	3.0c)	3.9c)
		Std	0.3c)	0.6c)	0.5c)	0.8c)	0.8c)	1.6c)	1.4c)	1.6c)	1.5c)	3.7c)	4.6c)
	Disparity (max-min)		3.6	4.4	4.4	5.7	5.6	6.9	7.5	7.9	7.3	6.8	7.5
Neurological recovery rate (%)	Local districts of Seoul metropolitan city	CR	0.8a)	1.6a)	1.5a)	1.7a)	1.6a)	2.9a)	3.3a)	3.9a)	4.9a)	5.8a)	6.0a)
		Std	0.9a)	1.6a)	1.6a)	1.7a)	1.6a)	3.0a)	3.5a)	4.4a)	5.9a)	6.8a)	7.1a)
	Local districts of Metropolitan city	CR	0.7	0.8	0.8	1.1	1.1	1.8	2.2	2.8	3.2	4.0	4.9
		Std	0.7	0.8	0.8	1.1	1.1	1.9	2.4	3.0	3.4	4.5	5.5
	Cities with less than 300,000 people	CR	0.7	0.6	1.2	1.1	1.1	1.3	1.2	1.8	1.8	3.3	3.2
		Std	0.8	0.5	1.3	1.1	1.0	1.2	1.2	1.9	2.1	4.6	4.0
	Urban rural consolidated cities	CR	0.3	0.3	0.4	0.6	0.6	0.7	1.0	1.1	1.3	2.2	2.7
		Std	0.4	0.3	0.4	0.7	0.6	0.8	1.2	1.3	1.5	2.6	3.5
	Counties	CR	0.1c)	0.1c)	0.2c)	0.3c)	0.3c)	0.6c)	0.5c)	0.8c)	0.8c)	1.9c)	2.1c)
		Std	0.1c)	0.1c)	0.2c)	0.4c)	0.4c)	0.7c)	0.6c)	1.0c)	1.1c)	2.5c)	2.6c)
	Disparity (max-min)		0.7	1.5	1.3	1.4	1.3	2.3	2.8	3.1	4.1	3.9	3.9

CPR, cardiopulmonary resuscitation; ROSC, return of spontaneous circulation; -, null value; CR, crude rate; Std, standardized rate.

^a)Region with the highest values in the year.

^b)Local districts of Metropolitan cities, cites with more than 300,000 population, or local districts of cities with more than 500,000 population or ‘Gu’ of ‘Si’ with more than 500,000 population.

^c)Region with the lowest values in the year.