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Table 3 Logistic regression analyses for 1-month outcomes for bystander-witnessed OHCAs and those with initial cardiac VF

From: Collaborative effects of bystander-initiated cardiopulmonary resuscitation and prehospital advanced cardiac life support by physicians on survival of out-of-hospital cardiac arrest: a nationwide population-based observational study

 

1-month survival

Good performance at 1 month

Vegetative status or de facto brain death at 1 month

 

OR

95% CI

P

OR

95% CI

P

OR

95% CI

P

All bystander-witnessed OHCAs

         

   Age (10-year increase)

0.87

0.86 to 0.89

< 0.001

0.78

0.76 to 0.79

< 0.001

0.96

0.95 to 0.98

< 0.001

   Sex

         

Male

Ref.

  

Ref.

  

Ref.

  

Female

1.04

0.99 to 1.10

0.109

0.93

0.84 to 1.01

0.094

1.12

1.04 to 1.21

0.004

   Call to EMS response (minutes)

0.90

0.89 to 0.91

< 0.001

0.87

0.86 to 0.89

< 0.001

0.93

0.92 to 0.94

< 0.001

   Causes of arrest

         

Noncardiac origin

Ref.

  

Ref.

  

Ref.

  

Cardiac origin with initial non-VF

0.65

0.62 to 0.69

< 0.001

1.12

1.00 to 1.25

0.050

0.54

0.49 to 0.59

< 0.001

Cardiac origin with initial VF

3.57

3.37 to 3.79

< 0.001

6.41

5.82 to 7.07

< 0.001

1.66

1.51 to 1.82

< 0.001

   Combination of BCPR and ACLS

         

ACLS by ELSTs without BCPR

Ref.

  

Ref.

  

Ref.

  

ACLS by ELSTs with BCPR

1.51

1.43 to 1.59

< 0.001

2.23

2.05 to 2.42

< 0.001

1.09

1.02 to 1.18

0.018

ACLS by physicians without BCPR

1.63

1.39 to 1.92

< 0.001

1.18

0.86 to 1.61

0.317

1.87

1.52 to 2.32

< 0.001

ACLS by physicians with BCPR

2.17

1.89 to 2.49

< 0.001

2.80

2.28 to 3.43

< 0.001

1.45

1.17 to 1.80

0.001

Bystander-witnessed OHCAs with initial VF of cardiac origin

         

   Age (10-year increase)

0.85

0.83 to 0.86

< 0.001

0.79

0.77 to 0.81

< 0.001

0.99

0.95 to 1.03

0.669

   Sex

         

Male

Ref.

  

Ref.

  

Ref.

  

Female

1.17

1.07 to 1.27

< 0.001

1.09

0.97 to 1.22

0.137

1.14

0.99 to 1.32

0.076

   Call to EMS response (minutes)

0.90

0.89 to 0.91

< 0.001

0.90

0.88 to 0.92

< 0.001

0.93

0.91 to 0.95

< 0.001

   Combination of BCPR and ACLS

         

ACLS by ELSTs without BCPR

Ref.

  

Ref.

  

Ref.

  

ACLS by ELSTs with BCPR

1.18

1.09 to 1.26

< 0.001

1.30

1.18 to 1.43

< 0.001

1.00

0.88 to 1.14

0.993

ACLS by physicians without BCPR

1.87

1.49 to 2.34

< 0.001

1.60

1.20 to 2.14

0.002

1.56

1.09 to 2.24

0.016

ACLS by physicians with BCPR

2.10

1.72 to 2.56

< 0.001

2.06

1.62 to 2.63

< 0.001

1.28

0.90 to 1.83

0.167

  1. Logistic regression analyses for 1-month outcomes for all the bystander-witnessed out-of-hospital cardiac arrests (OHCAs) (n = 95,072) and those with initial ventricular fibrillation (VF) of cardiac origin (n = 11,970). ACLS, advanced cardiac life support; BCPR, bystander-initiated cardiopulmonary resuscitation; CI, confidence interval; ELST, emergency life-saving technician; EMS, emergency medical service; OR, odds ratio; Ref., reference.
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