| Resuscitation skills | Conventional learning*n = 50 | Flipped learning*n = 45 | U-statistic | p-value |
|---|---|---|---|---|
| Time to first chest compression, second | 33.0 (24.0-42.0) | 31.0 (25.0-41.0) | 1171.0 | 0.73 |
| Total chest compressions, n | 101.5 (90.8-124.0) | 104.0 (91.0-121.0) | 1083.0 | 0.75 |
| Hands-off time, second | 34.5 (27.0-38.0) | 34.0 (29.5-38.5) | 1171.5 | 0.73 |
| Correct hand positions, % | 100.0 (98.8-100.0) | 100.0 (72.5-100.0) | 995.0 | 0.25 |
| Average chest compression depth, mm | 51.50 (43.5-57.0) | 50.0 (38.5-58.5) | 1018.5 | 0.43 |
| Appropriate chest recoil, % | 90.0 (53.8-100.0) | 80.0 (32.0-99.5) | 964.0 | 0.23 |
| Appropriate chest compression depth, % | 71.5 (9.8-97.3) | 52.0 (0.0-98.0) | 1053.0 | 0.59 |
| Chest compression rate per minute, n | 120.0 (111.0-132.5) | 124.0 (118.0-131.5) | 1329.0 | 0.13 |
| Total ventilation, n | 4.0 (2.0-6.0) | 3.0 (0.0-6.0) | 951.0 | 0.19 |
| Average ventilation volume, ml | 491.0 (279.5-777.8) | 329.0 (0.0-509.5) | 770.0 | 0.008** |
| Appropriate ventilation volume, % | 12.5 (0.0-50.0) | 0.0 (0.0-65.0) | 1175.0 | 0.69 |
| Ventilation rate per minute, n | 2.0 (1.0-3.0) | 1.0 (0.0-3.0) | 968.0 | 0.23 |
| Time from AED arrival to shock, second | 57.5 (50.0-63.0) | 57.0 (51.0-65.5) | 1148.0 | 0.86 |
| Key elements of CPR | ||||
| Safe approach | 37 (74.0) | 36 (80.0) | 0.63 | |
| Check responsiveness | 49 (98.0) | 44 (97.8) | 0.99 | |
| Call 119 (emergency phone number in Japan) | 28 (56.0) | 26 (57.8) | 0.99 | |
| Ask for automatic external defibrillator (AED) | 49 (98.0) | 44 (97.8) | 0.99 | |
| Check breathing | 42 (84.0) | 37 (82.2) | 0.99 | |
| Compression: ventilation = 30:2 | 47 (94.0) | 41 (91.1) | 0.70 | |
| Appropriate ventilation | 48 (96.0) | 45 (100.0) | 0.50 | |
| Correct positioning of defibrillator pads | 50 (100.0) | 42 (93.3) | 0.99 | |
| Safe delivery of shock | 31 (62.0) | 29 (64.4) | 0.83 |
*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