Association of TBI and Other Clinical Characteristics With History of LOC and/or Amnesia
| Variable | No LOC and/or Amnesia n = 1115 | History of LOC and/or Amnesia n = 801 | Difference | 95% CI |
|---|---|---|---|---|
| Mean age | 7.0 y | 10.6 y | 3.6 y | 3.1, 4.0 |
| Mean GCS | 14.8 | 14.1 | 0.7 | 0.6, 1.0 |
| TBI identified on CT | 11/414 (2.7%) | 70/745 (9.4%) | 6.7% | 4.1, 9.3 |
| TBI requiring acute intervention | 11/1115 (1.0%) | 77/801 (9.6%) | 8.6% | 6.5, 10.7 |
For those with an isolated history of LOC and/or amnesia, 0 of 142 (0%; 95% CI: 0%, 2.1%) had TBI on CT, and 0 of 164 (0%; 95% CI: 0%, 1.8%) had TBI in need of acute intervention. See “Materials and Methods” for definitions of outcome variables, TBI identified on CT, and TBI requiring acute intervention. Note that percentages were calculated only for patients who had known presence or absence of a history of LOC and/or amnesia