Variable | Control | Flashlight | Difference (control–flashlight) | p Value | ||
Sequence | Period | Group | ||||
Mean compression depth (mm) | 54.7 (52.9 to 56.5) | 54.7 (52.9 to 56.5) | <−0.001 (−0.92 to 0.92) | 0.43 | 0.77 | >0.99 |
Correct compression depth (%)* | 82.1 (71.9 to 92.3) | 84.7 (74.5 to 94.97) | −2.63 (−8.05 to 2.78) | 0.39 | 0.54 | 0.33 |
Mean compression rate | 120.4 (117.0 to 123.7) | 100.7 (97.4 to 104.1) | 19.63 (14.98 to 24.28) | 0.35 | 0.33 | <0. 01 |
Mean compression rate/min | 120.7 (117.4 to 124.1) | 100.8 (97.5 to 104.2) | 19.90 (15.30 to 24.50) | 0.35 | 0.31 | <0.01 |
Correct hand position (%) | 87.6 (80.7 to 94.5) | 84.2 (77.3 to 91.1) | 3.40 (−0.23 to 7.03) | 0.50 | 0.41 | 0.06 |
Correctly released compression (%) | 97.5 (93.8 to 101.2) | 96.6 (92.9 to 100.3) | 0.97 (−1.57 to 3.51) | 0.52 | 0.30 | 0.44 |
Rescuer fatigue (VAS) | 6.2 (5.6 to 6.9) | 4.8 (4.2 to 5.4) | 1.42 (0.52 to 2.31) | 0.95 | 0.51 | <0.01 |
Values are estimated mean (95% CI).
↵* Correct compression depth is >50 mm.
VAS, visual analogue scale of 0–10 (0, extremely easy; 10, extremely difficult).