Table 2 Compression times and compression quality

Compression frequency (bpm)

112(105/125)

125(104.5/133) (p = 0,17)

118(97/120)

114(102/128) (p = 0.525)

Compression depth (mm)

43.9 ± 1.8

42.8 ± 1.9 (p = 0.558)

44.3 ± 8

43.9 ± 11 (p = 0.880)

Hands-off time (%)

24.0(23.0/26.7)

28.3(24.3/31.7) (p = 0.007)

23.7(19.3/26.6)

31.0(25.0/33.7) (p = 0.006)

Sufficient compressions (%)

42.9 ± 34

41.2 ± 33 (p = 0.984)

41.5 ± 31

45.1 ± 37 (p = 0.928)

Sufficient compressions in a row

13.5(1.9/27.7)

8.0(1.3/14.8) (p = 0.37)

9.7(3.6/21.1)

8.6(3.6/25.1) (p = 0.99)

Time to first sufficient compression (sec.)

41.2(33.0/53.5)

32.6(21.4/77.7) (p = 0.12)

41.2(33.8/57.0)

38.4(31.6/120.7) (p = 0.85)

Time to first 10 sufficient compressions (sec.)

52.3(39.3/72.8)

109.6(42.6/158.2) (p = 0.03)

46.9(40.6/103.5)

43.0(34.5/59.8) (p = 0.52)