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Table 3 CC quality data of pairs

From: Are two or four hands needed for elderly female bystanders to achieve the required chest compression depth during dispatcher-assisted CPR: a randomized controlled trial

Variable All control group pairs All intervention group pairs p Female control group pairs Female intervention group pairs p Male control group pairs Male intervention group pairs p
(N-15) (N-21) (N-12a) (N-11) (N-3) (N-10a)
Chest compression fraction, % 85.6(7.2) 86(6.8) 0.882 84.6(7.5) 84.4(7.4) 0.956 89.5(5.3) 89.2(4.6) 0.930
Hands-off time, sec. 69.1(34.6) 67.2(32.6) 0.882 73.8(35.9) 74.8(35.5) 0.956 50.3(25.4) 52(22.2) 0.930
Average CC duty cycle, % 40.8(5.4) 44(3.3) 0.083 40.4(5.8) 44(3.6) 0.138 42.3(3.2) 44(3.4) 0.538
  1. Data are presented as the mean (SD)
  2. Data are presented as the median and interquartile range (IQR)
  3. aThere was 1 female pair from the control group and 2 male pairs from the intervention group with both members performing only every fourth CC whose results were not analyzed