Table 3 Components of compressions by training group
From: A randomized trial of video self-instruction in cardiopulmonary resuscitation for lay persons
Overall (N = 439) | Untrained (N = 135) | Continuous compressions (N = 185) | Compressions and ventilations (N = 119) | |||
|---|---|---|---|---|---|---|
Median (IQR) | Median (IQR) | Comparison to continuous compressions | Median (IQR) | Median (IQR) | Comparison to continuous compressions | |
Proportion Correct Compressions | 20.7 (0.3, 57.8) | 11.3 (0.0, 51.3) | Z = −2.20 p-value = 0.028 | 23.6 (1.0, 57.9) | 30.8 (3.0, 61.6) | Z = −0.91 p-value = 0.36 |
Average Compression Rate, no./min. | 94.0 (72.0, 108.0) | 85.0 (62.0, 102.8) | Z = −1.32 p-value = 0.187 | 93.0 (65.0, 105.5) | 104.0 (90.2, 113.0) | Z = −5.14 p-value < 0.001 |
Compression Depth in mm | 37.0 (26.0, 44.0) | 36.0 (20.0, 44.0) | Z = −0.48 p-value = 0.63 | 37.0 (27.0, 43.0) | 38.5 (29.2, 45.0) | Z = −1.70 p-value = 0.09 |
Proportion Compression Depth > 38 mm | 51.3 (4.2, 93.6) | 55.0 (0.6, 93.1) | Z = −0.60 p-value = 0.55 | 55.7 (5.9, 89.1) | 63.2 (12.9, 96.9) | Z = −1.10 p-value = 0.27 |
Proportion with Correct Hand Placement | 89.2 (58.8, 99.7) | 77.3 (49.0, 97.2) | Z = −3.52 p-value = <0.001 | 93.5 (62.3, 100.0) | 91.8 (71.4, 99.7) | Z = 0.19 p-value = 0.85 |