Table 1.

Baseline characteristics of both patient cohorts

	2008–2011 n = 180	2013–2016 n = 349	P-value
Male gender	131 (73)	266 (76)	0.39
Age (years)	64 (53–76)	64 (53–74)	0.74
Public location	71 (40)	156 (47)	0.12
Bystander witnessed	133 (79)	263 (79)	0.94
Bystander CPR	112 (63)	265 (78)	<0.001
Initial shockable rhythm	132 (74)	250 (74)	0.96
Shocked by EMS	136 (76)	202 (59)	<0.001
If yes, no. of shocks	4 (1–6)	2 (1–5)	0.004
EMS response time (minutes)	8 (6–10)	10 (5–12)	0.45
Amiodarone	61 (39)	86 (26)	0.004
Epinephrine	128 (81)	195 (58)	<0.001
AED attached	41 (23)	158 (46)	<0.001
AED shocked	27 (15)	135 (39)	<0.001

Values are presented as numbers (percentages) or medians (interquartile range)

CPR cardiopulmonary resuscitation, EMS emergency medical services, AED automated external defibrillator