Table 2

Demographic and clinical characteristics of out-of-hospital cardiac arrest patients

Characteristics
Epinephrine group (n = 452)
Vasopressin group (n = 146)

Males/femalesa
301/151
95/51
Age in yearsb
62.2 ± 17.8
60.8 ± 15.9
Bystander CPR, number (percentage)a
99/452 (22%)
31/146 (21%)
Time to initiation of CPR in minutesb
8.6 ± 5.3
7.8 ± 5.1
Average dose of epinephrine in milligramsb,c
7.6 ± 4.2
4.5 ± 2.7
Bicarbonate, number (percentage)a,c
172/452 (38%)
31/146 (21%)
Atropine, number (percentage)a,c
186/452 (41%)
42/146 (29%)
Dopamine, dobutamine, and norepinephrine, number (percentage)a,c
98/452 (22%)
15/146 (10%)
Resuscitation by medical team in minutesb,c
29.3 ± 9.4
18.7 ± 7.8

aBy Fisher exact test; bby Wilcoxon rank sum test; cp < 0.05. CPR, cardiopulmonary resuscitation.

Mally et al. Critical Care 2007 11:R39   doi:10.1186/cc5726