Table 1 Baseline characteristics and outcomes of the study patients ^a

Number of patients

5,379 (100%)

3,693 (68.7%)

1,686 (31.3%)

Age, yr

1 (0 to 11)

1 (0 to 10)

2 (0 to 13)

  <1 yr^b

2,328 (43.3%)

1,713 (46.4%)

615 (36.5%)

Boys

3,261 (60.6%)

2,222 (60.2%)

1,039 (61.6%)

Witnessed arrest

1,764 (32.8%)

1,182 (32.0%)

582 (34.5%)

  Family member

835 (15.5%)

554 (15.0%)

281 (16.7%)

  EMS personnel

370 (6.9%)

246 (6.7%)

124 (7.4%)

Bystander CPR^c

2,740 (50.9%)

1,845 (50.0%)

895 (53.1%)

Presumed cardiac etiology^d

1,792 (33.3%)

1,283 (34.7%)

509 (30.2%)

Shockable initial cardiac rhythm

261 (4.9%)

192 (5.2%)

69 (4.1%)

Prehospital AED administration^e

315 (5.9%)

233 (6.3%)

82 (4.9%)

Call-to-response time (min), n = 5,360 (99.6%)^f

7 (5 to 8)

7 (5 to 8)

7 (5 to 9)

Call-to-hospital arrival time (min), n = 5,326 (99.0%)^g

27 (21 to 35)

27 (21 to 35)

28 (21 to 37)

Prehospital ROSC

358 (6.7%)

228 (6.2%)

130 (7.7%)

1-month outcome after cardiac arrest

  Survival

581 (10.8%)

380 (10.3%)

201 (11.9%)

  Favorable neurological outcome (CPC = 1 or 2)

205 (3.8%)

129 (3.5%)

76 (4.5%)