Table 3

Characteristics and outcome among patients with exercise-related OHCA in relation to age

	0–35 years N=53	36–65 years N=327	>65 years N=232	P value
Age (years; mean±SD)	22.0±8.5	54.5±7.5	74.2±5.9
Sex (%) (0,0,0)
Female	9.4	9.8	8.6	0.68
Witnessed status (%) (2, 4, 8)
Crew witnessed	7.8	5.9	5.4	0.58
Bystander witnessed	72.6	79.3	78.1	0.77
Non witnessed	19.6	14.8	16.4	0.99
Aetiology (%) (3, 16, 12)
Cardiac	42.0	78.1	84.1	<0.0001
Initial rhythm (%) (3, 13, 12)
Ventricular fibrillation	66.0	70.1	51.8	0.0001
Early CPR
(A) CPR before dispatched unit? (24, 155, 100)
Yes	86.2	87.8	87.1	0.97
If yes, was a defibrillator attached? (3, 2, 1)
Yes	13.6	34.2	43.9	0.01
If yes, was the patient defibrillated before arrival of the dispatched unit? (1, 1, 1)
Yes	100	70.0	73.5	0.90
(B) CPR by fire brigade/police before EMS arrival? (26, 159, 104)
Yes	18.5	23.2	20.3	0.12
If yes, was a defibrillator attached? (0, 2, 0)
Yes	100	91.9	69.2	0.01
If yes, was the patient defibrillated before EMS arrival? (0, 0, 0)
Yes	80.0	76.5	61.1	0.24
Delay time (median, min)
From collapse–call (n=30, 208, 126)	2	2	2	0.02
From collapse–CPR (n=32, 222, 149)	1.5	1	1	0.39
From collapse–defibrill. (n=27, 149, 78)	11	11	10.5	0.71
From dispatch–arrival on scene (n=39, 268, 172)	8	10	8	0.48
Outcome (%)
ROSC at any time (0, 3, 5)
Yes	69.8	54.9	57.3	0.53
ROSC on arrival in hospital (2, 31, 16)
Yes	60.8	54.4	56.0	0.89
Alive at 30 days (1, 3, 6)
Yes	59.6	46.0	40.4	0.01

Numbers presented in parenthesis is the frequency of patients with missing information.
CPR, cardiopulmonary resuscitation; EMS, emergency medical service; OHCA, out-of-hospital cardiac arrest; ROSC, return of spontaneous circulation.