Table 1 Baseline Characteristics for Children under Age 2 who Received a CT Scan
Categorical Feature | No. (%) | |
|---|---|---|
Gender | Boy | 765 (53.53%) |
| Â | Girl | 664 (46.47%) |
Post-traumatic seizure | Yes | 43 (3.01%) |
| Â | No | 1386 (96.99%) |
Acting normally according to caregiver | Yes | 962 (67.32%) |
| Â | No | 467 (32.68%) |
Altered mental status according to healthcare provider | Yes | 416 (29.11%) |
| Â | No | 1013 (70.89%) |
Injury mechanism | Motor vehicle collision | 31 (2.17%) |
| Â | Pedestrian struck by moving vehicle | 12 (0.83%) |
| Â | Bike rider struck by automobile | 1 (0.07%) |
| Â | Bike collision or fall from bike | 2 (0.14%) |
| Â | Other wheeled transport crash | 11 (0.77%) |
| Â | Fall from standing/walking/running | 97 (6.79%) |
| Â | Walked or ran into stationary object | 42 (2.94%) |
| Â | Fall from an elevation | 858 (60.04%) |
| Â | Fall down stairs | 188 (13.16%) |
| Â | Sports | 0 (0.00%) |
| Â | Assault | 15 (1.05%) |
| Â | Object struck head - accidental | 72 (5.04%) |
| Â | Other | 100 (7.00%) |
Duration of post-traumatic seizure | \(<1\) min | 20 (1.40%) |
| Â | \(1-<5\) min | 20 (1.40%) |
| Â | \(5-15\) min | 3 (0.21%) |
| Â | \(>15\) min | 0 (0.00%) |
| Â | Not applicable | 1386 (96.99%) |
Hematoma or swelling location | Frontal | 350 (24.49%) |
| Â | Occipital | 94 (6.58%) |
| Â | Parietal/Temporal | 266 (18.62%) |
| Â | Not applicable | 719 (50.31%) |
Size of hematoma or swelling | Small | 120 (8.40%) |
| Â | Medium | 391 (27.36%) |
| Â | Large | 199 (13.93%) |
| Â | Not applicable | 719 (50.31%) |
Trauma above clavicles: scalp-frontal | Yes | 341 (23.86%) |
| Â | No | 488 (34.15%) |
| Â | Not applicable | 600 (41.99%) |
Trauma above clavicles: scalp-parietal | Yes | 157 (10.99%) |
| Â | No | 672 (47.02%) |
| Â | Not applicable | 600 (41.99%) |
Continuous Feature | Mean (SD) | |
Age (in month) | 9.30 (6.75) | |