Table 3

 Relative risk ratios

Relative risk (95% CI)
GCS ⩽14 v GCS 15 (n = 3834 v 12893)*ISS ⩾25 v ISS <25 (n = 2004 v 17534)ISS ⩾42 v ISS <42 (n = 244 v 19294)Head injury v no head injury (n = 5717 v 13821)Chest injury v no chest injury (n = 1032 v 18506)Abdo injury v no abdo injury (n = 711 v 18827)Limb injury v no limb injury (n = 11391 v 8147)
*Missing data excluded.
GCS, Glasgow Coma Score; ISS, Injury Severity Score.
Spine fracture or dislocation without cord injury v no fracture or dislocation0.98 (0.79 to 1.22)1.59 (1.26 to 2.00)2.80 (1.78 to 4.40)0.80 (0.66 to 0.97)2.30 (1.77 to 2.99)1.37 (0.93 to 2.02)0.19 (0.16 to 0.23)
p = 0.86p < 0.001p < 0.001p = 0.02p < 0.001p = 0.11p < 0.001
Cord injury v no cord injury3.12 (2.02 to 4.82)15.70 (10.64 to 23.17)35.85 (24.39 to 52.68)2.37 (1.63 to 3.45)6.20 (4.05 to 9.48)0.49 (0.12 to 2.00)0.06 (0.03 to 0.12)
p < 0.001p < 0.001p < 0.001p < 0.01p < 0.001p = 0.31p < 0.001