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Table 1 Backgrounds, characteristics and outcomes of OHCAs with reference to relation of bystander to victim

From: Don't stop your heart in front of your family: family as a bystander is associated with poor outcome of bystander-witnessed, bystander-CPR-performed out-of-hospital cardiac arrest

  Relation of bystander to victim  
Background, characteristics and outcome Family
(n= 25,119)
Friends, colleagues and passers-by (n= 5,191) Others
(n= 14,938)
Pvalue
Patient's age, median (25 to 75%) 77 (66 to 84) 61 (50 to 73) 84 (75 to 90) <0.001
Sex - male (%) 61.6 76.8 44.7 <0.001
CPR following telephone CPR (%) 75.1 42.7 36.1 <0.001
Initial rhythm shockable (%) 16.3 33.4 9.8 <0.001
Tune intervals, minutes, median (25 to 75%)     
   Collapse-call 2 (0 to 5) 2 (0 to 4) 2 (0 to 5) <0.001
   Collapse-bystander CPR 3 (1 to 6) 1 (0 to 4) 0 (0 to 2) <0.001
   Call arrival at patient 8 (6 to 11) 8 (6 to 11) 8 (6 to 10) <0.001
Outcomes     
   1-month survival (%) 8.1 17.2 9.2 <0.001
   1-month survival with favorable 4.0 11.9 4.8 <0.001
   neurological outcomes (%)