Table 3. Lay resuscitation rates and setting of cardiac arrest classified by age group.

Age	N	Lay CPRa		ROSCb		Home environment		Cardiac arrest observed
		Absolute	Percentage	Absolute	Percentage	Absolute	Percentage	Absolute	Percentage
Total	1206	360	29.9%	551	45.7%	849	70.4%	657	54.5%
Up to 35 y	63	25	39.7%	30	47.6%	26	41.3%	28	44.4%
36–64 y	365	152	39.5%	177	48.5%	208	57.0%	190	52.1%
65–74 y	250	74	30.4%	128	51.2%	173	69.2%	159	63.6%
Over 74 y	528	115	21.8%	216	40.9%	442	83.7%	280	53.0%

The data presented here, taken from a total of 1361 out-of-hospital resuscitations, show that there is an association between increasing patient age and a declining rate of lay resuscitation

^aCPR cardiopulmonary resuscitation;

^bROSC return of spontaneous circulation.