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Table 5 Patient characteristics and outcomes of propensity-matched patients

From: Who benefits most from mild therapeutic hypothermia in coronary intervention era? A retrospective and propensity-matched study

  Hypothermia-M group (n= 79) Normothermia-M group (n= 79) P value
Age (years) 60 (49 to 72) 61 (50 to 71) 0.62
Male gender 62 (78) 55 (70) 0.20
Pittsburgh overall performance category scale 1 before index cardiac arrest 78 (99) 79 (100) >0.99
Initial rhythm    0.72
   Ventricular fibrillation 23 (29) 25 (32)  
   Pulseless electrical activity 35 (44) 30 (38)  
   Asystole 21 (27) 24 (30)  
Bystander cardiopulmonary resuscitation 42 (53) 37 (47) 0.43
Time interval from collapse to start of cardiopulmonary resuscitation (minutes) 8 (1 to 12) 5 (1 to 10) 0.29
Time interval from collapse to return of spontaneous circulation (minutes) 35 (22 to 49) 39 (14 to 50) 0.86
Hypertension 36 (46) 25 (32) 0.07
Diabetes mellitus 23 (29) 16 (20) 0.20
Previous history of heart disease 31 (39) 20 (25) 0.06
Previous history of myocardial infarction 12 (15) 5 (6) 0.07
Previous history of chronic heart failure 12 (15) 9 (11) 0.48
Cause of cardiac arrest    
   Acute coronary syndrome 35 (44) 20 (25)  
   Old myocardial infarction 8 (10) 7 (9)  
   Cardiomyopathy 8 (10) 4 (5)  
   Spasm of coronary artery 4 (5) 1 (1)  
   Others 18 (23) 14 (21)  
   Unknown 6 (8) 33 (42)  
Emergency coronary angiography 44 (56) 20 (25) <0.01
Primary percutaneous coronary intervention 23 (29) 9 (11) <0.01
Use of intra-aortic balloon pump 44 (56) 15 (19) <0.001
Use of extracorporeal life-support 21 (27) 5 (6) <0.001
Duration of hospital stay (days) 16 (4 to 27) 1 (0 to 11) <0.001
Favorable neurological outcome 24 (30) 23 (29) 0.86
   Good cerebral performance 24 (30) 23 (29)  
   Coma or vegetative state 6 (8) 1 (1)  
   Dead 49 (62) 55 (70)  
Thirty-day survival 32 (41) 23 (29) 0.13
  1. Data presented as median (interquartile range) or n (%).