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Table 2 The rate of chest compressions per minute according to each compression depth

From: Comparison of CPR quality and rescuer fatigue between standard 30:2 CPR and chest compression-only CPR: a randomized crossover manikin trial

  Rate of chest compressions per minute with a depth of more than 5 cm (mean ± SD, %) Rate of chest compressions per minute with a depth of more than 4 cm (mean ± SD, %)
Time (minute) ST-CPR CO-CPR p-value ST-CPR CO-CPR p-value
1 68 ± 39 60 ± 39 0.136 91 ± 21 89 ± 27 0.572
2 52 ± 45 41 ± 43 0.015 84 ± 28 74 ± 38 0.093
3 49 ± 46 32 ± 41 0.003 80 ± 34 65 ± 42 0.019
4 41 ± 42 25 ± 40 0.004 75 ± 36 59 ± 44 0.009
5 42 ± 23 23 ± 37 0.001 74 ± 36 54 ± 44 0.002
6 41 ± 44 21 ± 37 0.001 70 ± 41 49 ± 46 0.002
7 38 ± 42 18 ± 35 0.001 70 ± 41 44 ± 46 <0.001
8 38 ± 44 18 ± 35 0.001 68 ± 40 41 ± 45 <0.001