Assessment of CPR skills at the 6 month follow-up
| CPR only (O) (n=152) | CPR+test and feedback (T) (n=213) | p Value | |
| Checks responsiveness by talking | |||
| 2: Yes | 23 (15) | 53 (25) | 0.024 |
| 1: No | 129 (85) | 160 (75) | |
| Checks responsiveness by shaking | |||
| 3: Yes | 25 (16) | 59 (28) | 0.012 |
| 2: No | 127 (84) | 154 (72) | |
| 3: Potentially dangerous | 0 | 0 | |
| Open airway—chin lift, head tilt | |||
| 5: Perfect | 0 | 1 (1) | NS |
| 4: Acceptable | 2 (1) | 6 (3) | |
| 3: Attempted other | 0 | 0 | |
| 2: Only one element | 8 (5) | 21 (10) | |
| 1: No | 142 (94) | 185 (87) | |
| Checks respiration—see, listen, feel | |||
| 2: Yes | 49 (32) | 97 (46) | 0.011 |
| 1: No | 103 (68) | 116 (54) | |
| Call 112 | |||
| 2: Yes | 80 (53) | 171 (80) | <0.001 |
| 1: No | 72 (47) | 42 (20) | |
| Compression/ventilation ratio | |||
| 4: 30:2 (28–32:2) | 28 (18) | 67 (32) | 0.011 |
| 3: Other ratio | 104 (68) | 129 (61) | |
| 2: Compressions only | 20 (13) | 17 (8) | |
| 1: Ventilations only | 0 | 0 | |
| Hand position during compression | |||
| 4: Correct | 8 (5) | 7 (3) | NS |
| 3: Other wrong | 59 (39) | 107 (50) | |
| 2: Too low | 85 (56) | 99 (46) | |
| 1: Not attempted | 0 | 0 | |
| Average compression depth | |||
| 6: 50–59 mm | 55 (36) | 79 (37) | 0.030 |
| 5: ≥60 mm | 0 | 6 (3) | |
| 4: 35–49 mm | 61 (40) | 97 (46) | |
| 2: 1–34 mm | 36 (24) | 31 (15) | |
| 1: Not attempted | 0 | 0 | |
| Total compression counted | |||
| 6: 140–190 | 52 (34) | 75 (35) | NS |
| 5: ≥191 | 62 (41) | 100 (47) | |
| 4: 121–139 | 11 (7) | 19 (9) | |
| 3: 81–120 | 21 (14) | 14 (7) | |
| 2: 1–80 | 6 (4) | 5 (2) | |
| 1: Not attempted | 0 | 0 | |
| Average ventilation volume | |||
| 5: 500–600 mL | 5 (3) | 7 (3) | <0.001 |
| 4: 1–499 mL | 11 (7) | 21 (10) | |
| 3: ≥601 mL | 27 (18) | 91 (43) | |
| 2: 0 mL | 87 (57) | 77 (36) | |
| 1: Not attempted | 22 (14) | 17 (8) | |
| Total ventilation counted | |||
| 5: 8–12 | 15 (10) | 34 (16) | <0.001 |
| 4: 1–7 | 13 (9) | 44 (21) | |
| 3: ≥13 | 15 (10) | 41 (19) | |
| 2: 0 | 87 (57) | 77 (36) | |
| 1: Not attempted | 22 (14) | 17 (8) | |
| Total hands-off time | |||
| 4: 0–60 s | 55 (36) | 62 (29) | 0.024 |
| 3: 61–90 s | 62 (41) | 120 (56) | |
| 2: 91–135 s | 33 (22) | 30 (14) | |
| 1: 136–180 s | 2 (1) | 1 (1) | |
| Total score | 30 (4.0) | 32 (3.9) | <0.001*† |
Results are presented as n (%) or mean (SD). Differences in proportions between groups were analysed by Pearson's χ2 test. Differences in total score between intervention groups were analysed by mixed models linear test* and unpaired t-test†. p Values <0.05 were considered statistically significant. The table lists the variable's best option at the top. All numbers are rounded to the nearest whole number. CPR, cardiopulmonary resuscitation; NS, not significant.