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Table 2 Showed median times of CPR outcomes between an online medical command versus on-scene medical command

From: The CPR outcomes of online medical video instruction versus on-scene medical instruction using simulated cardiac arrest stations

Outcomes Median time, seconds HR p*
Online medical command On-scene medical command
Time from start to chest compression 102 (95 % CI 56, 132) 36 (95 % CI: 27, 50) 3.98 (95 % CI: 1.61, 9.87) 0.002
Time from start to VT/VF detection 187 (95 % CI: 106, 239) 99 (95 % CI: 77, 128) 9.64 (95 % CI: 2.58, 35.99) <0.001
Time from VT/VF detection to the first defibrillation 57 (95 % CI: 35, 107) 28 (95 % CI: 15, 39) 2.84 (95%CI: 1.15, 7.01) 0.017
Time from start to adrenaline injection 282 (95 % CI: 226, 390) 165 (95 % CI: 136, 238) 9.81 (95 % CI 2.7, 35,66) <0.001
  1. Note. CPR, cardiopulmonary resuscitation, HR hazard ratio by the Cox regression analysis; VT ventricular tachycardia, VF ventricular fibrillation
  2. *p value of log rank test