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Table 1 Performance data according to traffic light category

From: The role of a checklist for assessing the quality of basic life support performance: an observational cohort study

   Average compression rate(min−1) Compressions with complete release(%) Correct compression depth(%)
Average compression rate of 100–120 min−1 and >  60% correct compression depth and >  60% compressions with complete release N 11 11 11
Mean 112.8 94.7 94.0
SD 5.47 12.5 9.7
Mini. 101 60.1 66.7
Max. 120 100.0 100.0
Average compression rate of 100–120 min−1 and >  60% compressions with complete release N 28 28 28
Mean 109.6 98.3 6.7
SD 6.37 6.7 10.7
Min. 100 64.7 0.0
Max. 120 100.0 43.2
> 60% compressions with complete release and >  60% correct compression depth N 24 24 24
Mean 102.8 98.0 85.4
SD 33.5 8.0 13.5
Min. 39 60.4 61.8
Max. 153 100.0 100.0
> 60% compressions with complete release N 77 77 77
Mean 94.8 99.3 10.7
SD 31.1 02.5 16.1
Min. 33 84.5 0.0
Max. 187 100.0 57.7
> 60% correct compression depth N 2 2 2
Mean 139.0 41.6 88.7
SD 14.1 20.2 9.3
Min. 129 27.3 82.1
Max. 149 55.9 95.2
Insufficient CPR performance in all categories N 9 9 9
Mean 61.4 12.9 19.4
SD 73.6 19.4 33.1
Min. 0 0.0 00.0
Max. 160 54.6 95.2
  Total N 151 151 151
Mean 98.7 92.7 29.5
SD 33.4 22.5 37.2
Min. 0 0.0 0.0
Max. 187 100.0 100.0