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Table 1 Return of spontaneous circulation for different patient subgroups

From: External validation of the ROSC after cardiac arrest (RACA) score in a physician staffed emergency medical service system

  All patients (N = 680) ROSC (N = 340) P-value
Demographics
 Age, yrs
  Median 62 (53–73) 62 (55–73) 0.80
   < 40 70 (10%) 31 (44%) 0.85
  40–49 63 (9%) 30 (48%)  
  50–59 128 (19%) 65 (51%)
  60–69 196 (29%) 106 (54%)
  70–79 123 (18%) 59 (48%)
  80–89 81 (12%) 40 (49%)
  90+ 19 (3%) 9 (47%)
Gender 0.132
 Female 204 (30%) 111 (54%)
 Male 476 (70%) 229 (48%)
Initial rhythm <.001
 VF 264 (39%) 175 (66%)
 VT 11 (2%) 9 (82%)
 Asystole 152 (22%) 35 (23%)
 PEA 247 (36%) 115 (47%)
 Unknown 6 (1%) 6 (100%)
Witnessed 0.045
 None 104 (15%) 41 (39%)
 Lay person 421 (62%) 214 (51%)
 Professional 155 (23%) 85 (55%)
Bystander CPR 341 (50%) 186 (55%) 0.017
339 (50%) 154 (45%)
Location <.001
 Home 344 (51%) 147 (43%)
 Ambulance 24 (4%) 15 (63%)
 Workplace 21 (3%) 16 (76%)
 Doctors office 8 (1%) 7 (88%)
 Medical institution 13 (2%) 8 (62%)
 Nursing Home 13 (2%) 5 (38%)
 Public place 257 (38%) 142 (55%)
Aetiology <.001
 Cardial 405 (60%) 228 (56%)
 Trauma 15 (2%) 8 (53%)
 Hypoxia 55 (8%) 33 (60%)
 Intoxication 32 (5%) 15 (47%)
 Other 173 (25%) 56 (32%)
  1. Categorical data are shown as counts with percentages in parenthesis and continuous data as medians with 25th and 75th interquartile range points in parenthesis
  2. VF ventricular fibrillation, VT ventricular tachycardia, PEA pulseless electrical activity, CPR cardiopulmonary resuscitation