Table 2 Characteristics according to age-group in persons with out-of-hospital cardiac arrest in Denmark from 2016 to 2019
Characteristic |  > 1 year (Infants) (N = 52) | 1–5 years (Preschool) (N = 41) | 6–12 years (School) (N = 33) | 13–16 years (Teenagers) (N = 47) | P-value |
|---|---|---|---|---|---|
Age, years | 0.1 (0.0, 0.3) | 2.6 (1.8, 4.2) | 9.8 (8.6, 11.3) | 15.0 (14.4, 16.1) |  < 0.001 |
Sex, male | 22 (42.3%) | 32 (78.0%) | 20 (60.6%) | 34 (72.3%) | 0.002 |
Response time (minutes) | 7.0 (4.0, 9.0) | 7.5 (4.8, 11.0) | 7.0 (5.0, 9.0) | 7.0 (5.0, 10.0) | 0.719 |
Location |  |  |  |  |  < 0.001 |
 Private home | 51 (98.1%) | 27 (65.9%) | 14 (42.4%) | 20 (42.6%) |  |
 Nature area | 0 (0.0%) | 2 (4.9%) | 3 (9.1%) | 6 (12.8%) |  |
 Traffic area | 1 (1.9%) | 1 (2.4%) | 5 (15.2%) | 14 (29.8%) |  |
 Other | 0 (0.0%) | 11 (26.8%) | 11 (33.3%) | 7 (14.9%) |  |
Witnessed by EMS | 1 (1.9%) | 3 (7.3%) | 1 (3.0%) | 3 (6.4%) | 0.583 |
CPR by EMS | 45 (86.5%) | 32 (78.0%) | 25 (75.8%) | 40 (85.1%) | 0.504 |
Defibrillation by EMS | 3 (5.8%) | 4 (9.8%) | 6 (18.2%) | 12 (25.5%) | 0.030 |
Witnessed by bystander | 24 (46.2%) | 18 (43.9%) | 21 (63.6%) | 21 (44.7%) | 0.288 |
CPR by bystander | 44 (84.6%) | 35 (85.4%) | 30 (90.9%) | 39 (83.0%) | 0.828 |
Defibrillation by bystander | 0 (0%) | 1 (2.4%) | 6 (18.2%) | 6 (12.8%) | 0.002 |
Medical doctor present | 49 (94.2%) | 38 (92.7%) | 33 (100%) | 44 (93.6%) | 0.519 |
Initial rhythm shockable | 11 (21.2%) | 8 (19.5%) | 6 (18.2%) | 15 (31.9%) | 0.406 |
ROSC before arrival at hospital | 20 (38.5%) | 29 (70.7%) | 18 (54.5%) | 29 (61.7%) | 0.013 |
State at arrival to hospital | Â | Â | Â | Â | 0.145 |
 Dead | 20 (38.5%) | 7 (17.1%) | 10 (30.3%) | 16 (34.0%) |  |
 Continuous CPR | 13 (25.0%) | 7 (17.1%) | 6 (18.2%) | 5 (10.6%) |  |
 ROSC, GCS < 8 | 11 (21.2%) | 13 (31.7%) | 10 (30.3%) | 18 (38.3%) |  |
 ROSC, GCS >  = 8 | 8 (15.4%) | 14 (34.1%) | 7 (21.2%) | 8 (17.0%) |  |
Thirty-day survival | 14 (26.9%) | 20 (48.8%) | 17 (51.5%) | 19 (40.4%) | 0.081 |