Table 1.
Demographics, outcomes and physiology
| All trapped and not trapped | Only trapped | |||||||||||
| Total | Female | Male | P value | Female | Male | P value | ||||||
| Number (%) | 70 027 | 18 175 | (26.0) | 51 852 | (74.0) | <0.0001 | 2879 | (37.1) | 4875 | (62.9) | <0.0001 | |
| Age (mean, SD) | 46.2 | (20.1) | 52.4 | (22.0) | 44.1 | (18.9) | <0.0001 | 50.1 | (21.8) | 42.9 | (19.7) | <0.0001 |
| ISS (median, IQR) | 13 | (9–22) | 13 | (9–22) | 13 | (9–24) | <0.0001 | 17 | (9–27) | 19 | (10–29) | <0.0001 |
| Driver of vehicle (%) | 16 600 | 5132 | (30.9) | 11 468 | (69.1) | <0.0001 | 1623 | (31.9) | 3471 | (68.1) | <0.0001 | |
| Systolic blood pressure (mean, SD) | 133.3 | (28.0) | 133.1 | (30.2) | 133.4 | (27.2) | 0.361 | 128.7 | (30.7) | 129.5 | (30.9) | 0.309 |
| Heart rate (mean, SD) | 86.7 | (22.2) | 87.9 | (21.9) | 86.2 | (22.3) | <0.001 | 91.2 | (24.2) | 92.1 | (26.3) | 0.185 |
| Respiratory rate (mean, SD) | 20.3 | (6.9) | 20.3 | (6.7) | 20.3 | (7.0) | 0.833 | 21.3 | (7.3) | 21.5 | (8.2) | 0.207 |
| Oxygen saturation (mean, SD) | 96.1 | (7.9) | 96.2 | (7.3) | 96.0 | (8.0) | 0.001 | 97.4 | (5.9) | 97.3 | (5.9) | 0.544 |
| GCS (median, IQR) | 15 | (15–15) | 15 | (15–15) | 15 | (15–15) | n/a | 15 | (1415) | 15 | (14–15) | n/a |
| Alive at 30 days (n,%) | 66 159 | (94.5) | 17 084 | (94.0) | 49 075 | (94.6) | 0.001 | 2657 | (92.3) | 4396 | (90.0) | 0.01 |
GCS, Glasgow Coma Scale; IQR, Interquartile range; ISS, injury severity score; SD, Standard Deviation.