Table 1

Demographic, injury characteristics, and outcome at 1 year of the study patients. Percentages quoted are relative frequencies, not survival proportions

VariableDetails
AgeMean 42 (SD 21)
SexMale289 (78%)
Female 83 (22%)
Cause of injuryVehicle accident117 (31%)
Pedestrian/cyclist 57 (15%)
Fall/jump103 (28%)
Other 95 (26%)
Injury severity scoreMean 22 (SD 11)
Glasgow coma scale total3–5 83 (22%)
6–8 82 (22%)
9–12111 (30%)
13–15 93 (25%)
Unknown  3 (1%)
Pupil reactivityEqual and reacting193 (52%)
Unequal and reacting 18 (5%)
Only one reacting 30 (8%)
Neither reacting 29 (8%)
Unknown102 (27%)
CT diagnosisVisible haematoma147 (40%)
No visible haematoma151 (41%)
Unknown 74 (20%)
Alcohol consumed?No172 (46%)
Yes138 (37%)
Unknown 62 (17%)
Outcome at 1 yearAlive278 (75%)
Dead 87 (23%)
Lost to follow up  7 (2%)