Table 1

Baseline characteristics in derivation and validation datasets.

Derivation dataset N=1306Validation dataset N=1287
Age, years (median IQR)42 (28,63)42 (27,59)
Age≥65 years (%)276 (21)276 (21)
Male (%)930 (71)905 (70)
English (%)1000 (77)988 (77)
Married (%)436 (33)397 (31)
Medical comorbidity (%)153 (12)168 (13)
Mental health (%)350 (27)319 (25)
GCS 14–15 (%)1078 (83)1062 (83)
SBP (mean, sd) mm Hg130 (22)129 (22)
RR (mean, sd) bpm19 (5)19 (5)
PR (mean, sd) bpm87 (19)86 (19)
Normal vital signs (%)988 (76)1015 (79)
ISS (median, IQR)5 (4,17)5 (4,17)
ISS≤8 (%)789 (60)817 (63)
Penetrating (%)144 (11)123 (10)
Falls432 (33)439 (34)
MVC (%)176 (13)200 (16)
MBC (%)127 (10)109 (8)
Cyclist (%)79 (6)73 (6)
Pedestrian (%)178 (14)172 (13)
ICU admission (%)361 (28)332 (26)
Inhospital mortality (%)39 (3)42 (3)
Length of stay (median, IQR) days4 (2,10)4 (2,10)
Short stay admission (%)387 (30)389 (30)
  • English, preferred language spoken at home; GCS, Glasgow coma score; ICU, intensive care unit; ISS, injury severity score; Married, married and living with spouse; MBC, motor bike crash; MVC, motor-vehicle crash; SBP, systolic blood pressure; PR, pulse rate; RR, respiratory rate; Short stay admission, length of stay ≤2 days and survived and not requiring ICU.