CT imaging performed to evaluate brain injuries
| Brain CT performed in patients | ||||
|---|---|---|---|---|
| ISS | Brain CT | BAC−, n (%) N=1399 | BAC+, n (%) N=793 | p Value |
| Total | 0.594 | |||
| Yes | 891 (63.7) | 496 (62.5) | ||
| No | 508 (36.3) | 297 (37.5) | ||
| <16 | 0.435 | |||
| Yes | 427 (50.4) | 283 (52.5) | ||
| No | 421 (49.6) | 256 (47.5) | ||
| 16–24 | 0.837 | |||
| Yes | 307 (83.9) | 148 (84.6) | ||
| No | 59 (16.1) | 27 (15.4) | ||
| ≥25 | 0.599 | |||
| Yes | 157 (84.9) | 65 (82.3) | ||
| No | 28 (15.1) | 14 (17.7) | ||
| Finding in the patients receiving brain CT examination | ||||
|---|---|---|---|---|
| ISS | Positive finding | BAC−, n (%) N=891 | BAC+, n (%) N=496 | p Value |
| Total | 0.000 | |||
| Yes | 389 (43.7) | 164 (33.1) | ||
| No | 502 (56.3) | 332 (66.9) | ||
| <16 | 0.001 | |||
| Yes | 123 (28.8) | 51 (18.0) | ||
| No | 304 (71.2) | 232 (82.0) | ||
| 16–24 | 0.228 | |||
| Yes | 174 (56.7) | 75 (50.7) | ||
| No | 133 (43.3) | 73 (49.3) | ||
| ≥25 | 0.985 | |||
| Yes | 92 (58.6) | 38 (58.5) | ||
| No | 65 (41.4) | 27 (41.5) | ||
| Positive finding in the brain | |||
|---|---|---|---|
| Diagnosis | BAC−, n (%) N=389 | BAC+, n (%) N=164 | p Value |
| Subarachnoid haemorrhage | 196 (50.4) | 79 (48.2) | 0.634 |
| Subdural haemorrhage | 186 (47.8) | 80 (48.8) | 0.836 |
| Epidural haemorrhage | 46 (11.8) | 18 (11.0) | 0.775 |
| Intracranial haemorrhage | 63 (16.2) | 19 (11.6) | 0.164 |
BAC, blood alcohol concentration; ISS, Injury Severity Score.