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Table 2 Performance of chest compressions for laypeople

From: Comparison of the quality of chest compressions on a dressed versus an undressed manikin: A controlled, randomised, cross-over simulation study

  Mean percentage of correct actions
Variable* Undressed chest
(95% CI)
Dressed chest
(95% CI)
Mean group Difference
(95% CI)
p value
Correct hand positioning 84% (71;96) 80% (67;94) 4 (-7;14) 0.46
Complete release
(≤ 10 mm)
99% (98;100) 100% (99;100) 0 (-1;0) 0.33
Correct compressions depth
(range 40-50 mm)
25% (13;37) 34% (20;48) -9 (-23;4) 0.16
Compressions correct in all aspects 21% (10;32) 31% (17;45) -10 (-23;4) 0.15
  1. *All variables are means per group in the studied cycle of performed CPR given as percentage.
  2. Laypeople. Group means and differences for performance of chest compressions for the variables: Correct hand positioning, complete release (≤ 10 mm), correct compressions depth (range 40-50 mm) and compressions correct in all aspects, performed on an undressed and dressed chest.