Table 2 Key factors associated with survival in different age groups

Age (years)

56.4 ± 12.4

58.4 ± 12.1

0.006

82.5 ± 4.8

84.1 ± 5.3

< 0.001

Male sex

238

1584

0.823

48

841

0.074

EMS response time (min)

6.1 ± 2.3

7.2 ± 3.8

< 0.001

5.8 ± 2.0

6.7 ± 3.2

0.006

Cardiac arrest location (public)

140

513

< 0.001

24

125

< 0.001

Bystander CPR

165

904

0.002

51

648

0.268

Bystander keep airway

40

189

0.034

19

153

0.011

Attended by EMT-Paramedic

130

630

< 0.001

55

401

< 0.001

Shockable rhythm

41

130

< 0.001

3

29

0.861

Prehospital defibrillation by AED

156

487

< 0.001

19

152

0.01

Intubation by EMT

7

39

0.647

5

26

0.028

Hypertension

97

676

0.676

43

698

0.294

Diabetes

77

512

0.932

32

438

0.757

Old stroke

20

133

0.969

8

163

0.305

Liver disease

10

89

0.386

3

39

0.866

Respiratory disease

14

59

0.109

7

110

0.811

Renal disease

29

211

0.668

11

138

0.651