Table 2.

Characteristics of included studies.

Author	Year	Group	CPR pretreatment (sec)	Compression to ventilation ratio	No. of consecutive shocks
Jost	2010	Defi -first		Cardio-pump*	3
		Compr.-first	60	Cardio-pump*	1
Baker	2008	Defi -first			3
		Compr.-first	180	15:2	3
Jacobs	2005	Defi -first			3
		Compr.-first	90	5:1	3
Wik	2003	Defi -first			3
		Compr.-first	180	5:1	3

* Trademark (manufacturer: Ambu, Denmark). Compr-first: chest compressions before defibrillation;

Defi.-first: immediate defibrillation before chest compressions; sec: seconds