Baseline characteristics of 1667 young children (< 2 yr) with minor head trauma
| Characteristic | Study cohort; no. (%) of patients* | |
|---|---|---|
| Derivation cohort n = 811 | Validation cohort n = 856 | |
| Age, mo, median (IQR) | 8 (5–12) | 8 (5–12) |
| Sex, male | 426 (52.5) | 463 (54.1) |
| Study site† | ||
| Hospital A | 586 (72.3) | 610 (71.3) |
| Hospital B | 225 (27.7) | 210 (24.5) |
| Hospital C | 0 | 40 (4.7) |
| Trauma due to a fall | 711 (87.7) | 756 (88.3) |
| Fall from arms of a parent | 75 (9.2) | 82 (9.6) |
| Fall in the stairs | 83 (10.2) | 109 (12.7) |
| Radiologic evaluation | 291 (35.9) | 354 (41.4) |
| Skull fracture | 49 (6.0) | 44 (5.1) |
| Simple | 41 | 35 |
| Diastasis > 4 mm | 5 | 1 |
| Displaced fracture | 3 | 7 |
| Ping-pong fracture | 0 | 1 |