Characteristics | Development data set (n=946) n (column %) | Validation data set (n=284) n (column %) | P value |
Demographic | |||
Age (years) | |||
Median (IQR) | 30 (21–41) | 30 (22–40) | 0.999 |
Male | 823 (87.0) | 248 (87.3) | 0.886 |
Clinical | |||
Motor score | |||
No motor response (1) | 124 (13.1) | 30 (10.6) | 0.467 |
Extension to pain (2) | 191 (20.2) | 54 (19.0) | |
Flexion to pain (3) | 70 (7.4) | 29 (10.2) | |
Withdrawal from pain (4) | 145 (15.3) | 42 (14.8) | |
Localising pain/obeys commands (5/6) | 416 (44.0) | 129 (45.4) | |
Pupil reactivity | |||
Both pupils reacted | 668 (70.6) | 195 (68.7) | 0.742 |
One pupil reacted | 96 (10.2) | 33 (11.6) | |
No pupil reacted | 182 (19.2) | 56 (19.7) | |
Limb movement | 0.103 | ||
Bilateral well | 671 (70.9) | 204 (71.8) | |
Unequal | 156 (16.5) | 56 (19.7) | |
Bilateral Absent | 119 (12.6) | 24 (8.5) | |
Major extracranial Injury (yes) | 277 (29.3) | 58 (20.4) | 0.003 |
Secondary insult | |||
Hypotension (yes) | 260 (27.5) | 87 (30.6) | 0.301 |
Various CT findings | |||
Midline shift (>5 mm) (yes) | 389 (41.1) | 138 (48.6) | 0.026 |
SDH (yes) | 450 (47.6) | 137 (48.2) | 0.843 |
EDH (yes) | 159 (16.8) | 38 (13.4) | 0.167 |
Basal cistern effaced (yes) | 171 (18.1) | 59 (20.8) | 0.306 |
tSAH/IVH (yes) | 381 (40.3) | 81 (28.5) | 0.001 |
Outcome(s) | |||
In-hospital mortality (yes) | 374 (39.5) | 98 (34.5) | 0.127 |
(n=682) | (n=192) | ||
Unfavourable outcome (yes) | 482 (70.7) | 133 (69.3) | 0.707 |
EDH, epidural haematoma; IVH, intraventricular haemorrhage; SDH, Subdural haematom; tSAH, traumatic subarachnoid haemorrhage.