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Table 2 Chest compression force (Newton; 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
  Younger Older All
Early 510.1 ± 7.6 416.2 ± 8.9 463.1 ± 5.7
End 440.0 ± 7.6 342.3 ± 8.9 391.1 ± 5.7
Across time 475.0 ± 14.0 379.3 ± 15.8  
30:2 CPR
Early 498.1 ± 7.6 446.0 ± 9.3 472.1 ± 5.9
End 464.9 ± 7.6 390.1 ± 9.3 427.5 ± 5.9
Across time 481.5 ± 14.0 418.1 ± 17.1  
Hands-Only CPR and 30:2 CPR
Early 504.1 ± 8.5 431.1 ± 10.0 467.6 ± 6.4
End 452.4 ± 8.5 366.2 ± 10.0 409.3 ± 6.4
Across time and type of CPR 478.3 ± 27.9 398.7 ± 32.8