Table 2. Differences in CPR performance based on instruction method (N = 24).
|
Audio instruction |
Video instruction | P-valuea | ||
|---|---|---|---|---|
| Chest compressions |
Score (%) | 76.67 ± 32.55 | 86.58 ± 16.09 | .621 |
| Frequency | 96.92 ± 12.33 | 121.42 ± 17.23 | .002 | |
| Average depth (mm) | 52.17 ± 12.10 | 53.67 ± 5.30 | .487 | |
| Relaxation rate (%) | 71.67 ± 34.55 | 90.83 ± 16.39 | .063 | |
| Implementation rate (%) | 47.08 ± 7.79 | 62.67 ± 12.75 | .001 | |
| Hand position accuracy (5) | 86.25 ± 28.56 | 98.42 ± 5.49 | .074 | |
| Compression speed (times/min) | 108.58 ± 3.60 | 104.50 ± 7.19 | .099 | |
| Hands-off time | 17.08 ± 2.71 | 10.83 ± 2.92 | .000 | |
| Artificial respiration |
Score (%) | 57.42 ± 37.59 | 73.58 ± 33.04 | .505 |
| Total respiration (times) | 3.50 ± 2.20 | 5.50 ± 2.75 | .048 | |
| Total average amount (ml) | 370.75 ± 193.67 | 430.50 ± 147.10 | .435 | |
| Breathing at the appropriate volume (%) | 57.75 ± 45.63 | 72.42 ± 31.03 | .929 | |
| Speed (times/min) | 1.58 ± 1.17 | 5.58 ± 1.44 | .081 | |
| Total score | 19.25 ± 11.85 | 63.17 ± 24.10 | .000 | |
Notes.
a
Statistical significance was measured by the Mann–Whitney U-test.