| Resuscitation skills | Conventional learning*n = 54 | Flipped learning*n = 54 | U-statistic | p-value |
|---|---|---|---|---|
| Time to first chest compression, second | 29.5 (24.0-41.0) | 34.0 (29.5-45.0) | 1864.0 | 0.01** |
| Total chest compressions, n | 120.0 (92.8-133.8) | 101.0 (90.0-120.0) | 998.5 | 0.005** |
| Hands-off time, second | 33.0 (25.8-38.3) | 34.0 (31.8-37.0) | 1581.0 | 0.45 |
| Correct hand positions, % | 100.0 (62.8-100.0) | 100.0 (69.5-100.0) | 1481.5 | 0.87 |
| Average chest compression depth, mm | 48.50 (42.0-62.0) | 53.0 (41.0-61.0) | 1494.5 | 0.82 |
| Appropriate chest recoil, % | 69.0 (7.0-98.3) | 79.5 (22.3-100.0) | 1630.0 | 0.29 |
| Appropriate chest compression depth, % | 45.0 (7.0-99.0) | 82.0 (2.0-97.3) | 1493.5 | 0.83 |
| Chest compression rate per minute, n | 129.5 (117.0-142.0) | 131.5 (120.0-141.3) | 1526.5 | 0.67 |
| Total ventilation, n | 6.0 (3.8-7.0) | 5.0 (3.0-6.0) | 1280.0 | 0.27 |
| Average ventilation volume, ml | 481.5 (314.0-819.3) | 645.5 (304.0-884.8) | 1521.5 | 0.70 |
| Appropriate ventilation volume, % | 14.0 (0.0-40.8) | 17.0 (0.0-50.0) | 1553.0 | 0.54 |
| Ventilation rate per minute, n | 3.0 (1.8-4.0) | 2.0 (1.0-3.0) | 1193.5 | 0.10 |
| Time from AED arrival to shock, second | 55.0 (45.0-68.0) | 60.0 (53.0-72.8) | 1725.5 | 0.10 |
| Key elements of CPR | ||||
| Safe approach | 47 (87.0) | 53 (98.2) | 0.06 | |
| Check responsiveness | 53 (98.2) | 53 (98.2) | 0.99 | |
| Call 119 (emergency phone number in Japan) | 45 (83.3) | 53 (98.2) | 0.02** | |
| Ask for automatic external defibrillator (AED) | 54 (100) | 54 (100) | 0.99 | |
| Check breathing | 48 (88.9) | 49 (90.7) | 0.99 | |
| Compression: ventilation = 30:2 | 49 (90.7) | 49 (90.7) | 0.99 | |
| Appropriate ventilation | 49 (90.7) | 50 (92.6) | 0.99 | |
| Correct positioning of defibrillator pads | 52 (96.3) | 52 (96.3) | 0.99 | |
| Safe delivery of shock | 42 (77.8) | 41 (75.9) | 0.99 |
*The figures inside the brackets are interquartile range **Statistically significant difference
Int J Med Educ. 2017; 8:430-436; doi: 10.5116/ijme.5a2b.ae56