Table 1
Witnessed arrest correlation to survival and bystander CPR
ER survival
Witnessed
No
Yes
Total
Ļ
2
Pearson correction (pā=ā0.0009); odds ratio 2.5 (0.231/0.0938)
No
288
27
315
%
(91.4)
(8.6)
(43.9)
Yes
326
76
402
%
(81.1)
(18.9)
(56.1)
Total
618
103
717
%
(85.6)
(14.4)
(100.0)