Table 2. Cardiopulmonary resuscitation performance and subjective feedback (NRS) in three groups.
| 2FT | 2TT | CTT | P-value | ||
|---|---|---|---|---|---|
| (n = 31) | (n = 31) | (n = 31) | |||
| CPR performance | Compression depth (mm) | 40 (39–41) a | 42 (41–43)b | 42 (41–43)b | <0.05 |
| Compression rate (bpm) | 106 (104–112) | 109 (105–114) | 107 (103–114) | 0.667 | |
| Chest recoil (%) | 100 (99–100) | 99 (95–100) | 99 (92–100) | 0.057 | |
| Adequate ventilation (%) | 56 (38–80) | 50 (20–70) | 63 (38–78) | 0.260 | |
| Total simulation time (sec) | 116.0 (109–122)a | 119 (114–123)a | 122 (118–128)b | <0.05 | |
| Hands-off time per cycle (sec) | 6 (6–6)a | 7 (6–8)b | 7 (6–8)b | <0.05 | |
| Chest compression fraction (%) | 73.9 (72.2–75.6)a | 71.2 (67.2–72.2)b | 71.3 (67.7–74.1)b | <0.05 | |
| Correct location (%) | 99 (86–97) | 100 (97–100) | 100 (99–100) | 0.058 | |
| Questionnaires | Difficulty level | 3 (1–5) | 3 (2–6) | 2 (2–4) | 0.554 |
| Fatigue | 7 (6–8) a | 5 (3–7) b | 4 (2–6) b | <0.05 | |
| Pain | 7 (6–8) a | 5 (3–6) b | 5 (3–6) b | <0.05 |
The different letters indicate significantly different groups on the basis of the Kruskal-Wallis test with multiple comparisons with the Bonferroni correction method. Data show as median (interquartile range).
2FT, Two finger technique; 2TT, Two thumb encircling technique; CTT, Cross thumb technique; CPR, Cardiopulmonary resuscitation; bpm, Beat per minutes; NRS, Numeric rating scale.