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Table 1 Rate and depth of chest compressions (mean ± SE)

From: A randomized cross-over study of the quality of cardiopulmonary resuscitation among females performing 30:2 and hands-only cardiopulmonary resuscitation

 

Hands-Only CPR

30:2 CPR

Measures

Early

End

Across time

Early

End

Across time

Compression rate (number per minute)*

90.4 ± 1.2

92 ± 3.5

91.2 ± 2.3

96.8 ± 0.5

98.9 ± 5.7

97.9 ± 3.5

Compression depth (mm)*

42.1 ± 2.7

36.3 ± 3.0

39.2 ± 4.1

43.7 ± 0.9

40.3 ± 2.5

42.0 ± 2.5

Percent of compressions 38 mm or more*

73.2 ± 10.5

46.6 ± 16.8

59.9 ± 19.1

82.3 ± 2.6

62.8 ± 16.4

72.5 ± 14.8

Hands-Only CPR and 30:2 CPR

 

Early

End

All Subjects (across time and CPR type)

Compression rate (number per minute)

93.7 ± 0.8

 

95.5 ± 4.7

94.6 ± 1.8

Compression depth (mm)*

42.9 ± 1.8

 

38.3 ± 2.8

40.7 ± 2.3

Percent compressions 38 mm or more*

77.8 ± 4.0

 

54.7 ± 16.6

66.2 ± 10.4