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Table 1 Comparison of survival between OHCAs without bystander CPR and bystander CPR in bystander-witnessed OHCAs

From: CPR initiated after telephone-assisted instruction produces a better outcome of bystander-witnessed out-of-hospital cardiac arrests than no bystander CPR but is less effective than CPR on the bystander's own initiative

Factor

Adjusted odds ratio

95% CI

Type of CPR

  

   No bystander CPR

Reference

 

   CC-only CPR following telephone-CPR

1.66

1.49 to 1.84

   Conventional CPR following telephone-CPR

1.67

1.48 to 1.89

   CC-only CPR on bystander's own initiative

2.22

1.99 to 2.49

   Conventional CPR on bystander's own initiative

2.36

2.10 to 2.66

Aetiology

  

   Presumed cardiac

2.44

2.27 to 2.63

   Noncardiac

Reference

 

Time intervals

  

   Witness-call

0.98

0.97 to 0.98

   Witness-first CPR performed either by

0.97

0.96 to 0.98

   citizens or by EMTs

  

   Call-arrival at patients

0.93

0.92 to 0.94

  1. Comparisons of 1-month survival with favourable neurological outcomes between OHCAs without bystander CPR and with four types of bystander CPR in bystander-witnessed OHCAs (multiple logistic regression analysis).
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Critical Care

ISSN: 1364-8535