Total (n = 785,591)

Cardiac origin (n = 435,064)

Non-cardiac origin (n = 350,527)

Age, years.

72 ± 18

75 ± 16^*

69 ± 21

Male, n (%)

458,105 (58.3)

251,554 (57.8)^*

206,551 (58.9)

ROSC, n (%)

52,955 (6.7)

29,214 (6.7)

23,741 (6.8)

1-month survival, n (%)

37,912 (4.8)

23,553 (5.4)^*

14,359 (4.1)

CPC1 or 2, n (%)

17,410 (2.2)

13,230 (3.0)^*

4180 (1.2)

OPC1 or 2, n (%)

17,223 (2.2)

13,109 (3.0)^*

4114 (1.2)

Initial rhythm

VF

55,192 (7.0)

47,606 (10.9)^*

7586 (2.2)

pulseless VT

1862 (0.2)

1219 (0.3)^*

643 (0.2)

PEA

166,976 (21.3)

87,158 (20.0)^*

79,818 (22.8)

Asystole

528,193 (67.2)

282,336 (64.9)^*

245,857 (70.1)