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Table 1 Baseline characteristics of the study population (n = 205)

From: 2-year survival of patients undergoing mild hypothermia treatment after ventricular fibrillation cardiac arrest is significantly improved compared to historical controls

Variable Control (n = 98) Hypothermia (n = 107) p-Value
Age (years) 64.5 (59.61-64.90) 60.5 (57.40-62.22) 0.13
Female sex-no./total no.(%) 26/98 (26.5) 26/107 (24.3) 0.71
APACHE Score 26 (24-27) 29 (27-29.) 0.02
Location of cardiac arrest    
Out-of-hospital no./total-no. (%) 81 (82.7) 89 (83.2) 0.92
In-hospital no./total-no. (%) 17 (17.3) 18 (16.8)  
Cause of cardiac arrest    
AMI-no./total no. (%) 76 (77.6) 77 (72) 0.71
Primary arrhythmia-no./total-no. (%) 16 (16.3) 24 (22.4)  
Respiratory-no./total-no. (%) 2 (2) 2 (1.9)  
Other-no./total no.(%) 4 (4.1) 1 (0.9)  
Time to ROSC (min) 22 (18-30) 19 (12-27.75) < 0.01
Total epinephrine dose (mg) 3 (2-6) 2.2 (0-5) < 0.01
Bystander CPR* 19 (24.3) 44 (99) 0.02
Length of ICU stay (days) 16 (13-21) 12 (9-16) 0.04
Time on ventilator (hours) 217 (180-313) 204 (145-243) 0.20
  1. Data are presented as medians (25th and 75th percentiles) or as absolute numbers (relative frequencies). AMI - acute myocardial infarction, APACHE - acute physiology and chronic health evaluation, ROSC - return of spontaneous circulation. * Bystander CPR; data are available from n = 78 in the control group and n = 106 in the hypothermia group.