Table 2 . Comparison of compression depth, percentage of comparison depth, and subject heart-rate increase .
Variable |
Compression rate |
p value |
|
100 times/minute group (N = 35) |
120 times/minute group (N = 35) |
||
Compression depth, cm |
5.2 ± 0.3 |
5.4 ± 0.3 |
0.007 |
Percentage of compression depth, % |
37.1 ± 10.2 |
18.7 ± 7.2 |
0.0001 |
The difference in subject heart-rate increase |
22.7 ± 9.7 |
32.4 ± 8.8 |
0.0001 |