Table 1

Results from a linear mixed model for cardiopulmonary resuscitation performance

VariableControlFlashlightDifference (control–flashlight)p Value
SequencePeriodGroup
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)0.430.77>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)0.390.540.33
Mean compression rate120.4 (117.0 to 123.7)100.7 (97.4 to 104.1)19.63 (14.98 to 24.28)0.350.33<0. 01
Mean compression rate/min120.7 (117.4 to 124.1)100.8 (97.5 to 104.2)19.90 (15.30 to 24.50)0.350.31<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)0.500.410.06
Correctly released compression (%)97.5 (93.8 to 101.2)96.6 (92.9 to 100.3)0.97 (−1.57 to 3.51)0.520.300.44
Rescuer fatigue (VAS)6.2 (5.6 to 6.9)4.8 (4.2 to 5.4)1.42 (0.52 to 2.31)0.950.51<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).