Table 2.
Values of external chest compression variables for the participants as means over a nine-minute period, for all participants and differentiated by gender.
| Parameter | 15:2 | 30:2 | 15:2 | 15:2 | 30:2 | 30:2 |
|---|---|---|---|---|---|---|
| All (n = 40) | All (n = 40) | Male (n = 30) | Female (n = 10) | Male (n = 30) | Female (n = 10) | |
| Compression rate (n/min) | 110 (104/116) | 108 (102/115) | 107 (100/114) | 120 (109/131)* | 106 (99/112) | 117 (102/133) |
| Compression depth (mm) | 38.3 (35.6/41.0) | 37.4 (34.2/40.6) | 40 (37/43) | 32 (27/38)** | 39 (35/43) | 32 (26/37)** |
| Correct compression depth (%) | 32 (21/43) | 33 (21/45) | 36 (22/48) | 23 (-2/48) | 38 (22/52) | 19 (-1/40) |
| Too shallow (%) | 55 (42/68) | 55 (40/69) | 48 (33/63) | 77 (50/102)** | 46 (25/63) | 80 (60/101)* |
| Too deep (%) | 15 (4/25) | 12 (3/21) | 19 (6/32) | 0.5 (0/1.5) | 16 (5/28) | 0 |
| Decompression depth (mm) | 2.3 (1.8/2.9) | 2.2 (1.8/2.7) | 2.5 (1.8/3.2) | 1.7 (1.2/2.2) | 2.4 (1.9/3.0) | 1.6 (1.1/2.1) |
| No-flow time (sec) | 273 (262/283) | 188 (179/197)*** | 272 (260/285) | 273 (252/295) | 187 (176/198) | 190 (172/208) |
Data are presented as means (± 95% confidence interval). P-values refer to the comparison between female and male participants. *: p < 0.1; **: p < 0.05; ***: p < 0.001 (note: comparing 15:2 vs. 30:2).