Variables | Overall (n = 43) | Prior training (n = 31) | No prior training (n = 12) | χ2 | p-value |
---|---|---|---|---|---|
Encourage to cough | 1.601 | 0.206 | |||
Yes | 21 (48.8) | 17 (54.8) | 4 (33.3) | ||
No | 22 (51.2) | 14 (45.2) | 8 (66.7) | ||
Give 5 back blows | 12.429 | < 0.001 | |||
Yes | 31 (71.1) | 27 (87.1) | 4 (33.3) | ||
No | 12 (27.9) | 4 (12.9) | 8 (66.7) | ||
Give black blows correctly | n = 31 | n = 27 | n = 4 | 0.005 | 0.945 |
Yes | 16 (51.6) | 14 (51.9) | 2 (50.0) | ||
No | 15 (48.4) | 13 (48.1) | 2 (50.0) | ||
Give 5 abdominal thrusts | 0.509 | 0.476 | |||
Yes | 41 (95.3) | 30 (96.8) | 11 (91.7) | ||
No | 2 (4.7) | 1 (3.2) | 1 (8.3) | ||
Give abdominal thrusts correctly | n = 41 | n = 30 | n = 11 | 3.095 | 0.079 |
Yes | 7 (17.1) | 7 (23.3) | 0 (0.0) | ||
No | 34 (82.9) | 23 (76.7) | 11 (100.0) | ||
Continue to 5 back blows and 5 abdominal thrusts | 3,411 | 0.065 | |||
Yes | 24 (55.8) | 20 (64.5) | 4 (33.3) | ||
No | 19 (44.2) | 11 (35.5) | 8 (66.7) | ||
Continue to 5 back blows and 5 abdominal thrusts correctly | n = 24 | n = 20 | n = 4 | 0.960 | 0.327 |
Yes | 4 (16.7) | 4 (20.0) | 0 | ||
No | 20 (83.3) | 16 (80.0) | 4 (100.0) | ||
Start BLS for unconscious victim | 1.856 | 0.173 | |||
Yes | 25 (58.1) | 20 (64.5) | 5 (41.7) | ||
No | 18 (41.9) | 11 (35.5) | 7 (58.3) | ||
Perform all the steps | 3.237 | 0.072 | |||
Yes | 7 (16.3) | 7 (22.6) | 0 (0.0) | ||
No | 36 (83.7) | 24 (77.4) | 12 (100.0) | ||
Correct compliance ratea | 50.0 (37.5 – 62.5) | 50.0 (50.0–62.5) | 31.3 (12.5–50.0) | - | U = 76,000; p = 0.002b |
Time to back blows (sec) | 13.2 (10.3 – 19.0) | 13.5 (10.5–19.2) | 9.4 (6.3–13.2) | - | U = 26,000; p = 0.107b |
Time to abdominal thrust (sec) | 22.5 (14.2 – 29.1) | 26.1 (19.2–31.0) | 14.1 (9.5–19.8) | - | U = 58,000; p = 0.001b |
Total time (sec) | 54.4 (42.9 – 67.6) | 56.5 (51.9–71.0) | 42.7 (40.7–51.2) | - | U = 77,000; p = 0.002b |