Figure 2

Subgroup analysis for favorable neurologic outcome, ISS < 9, ISS ≥ 9, age ≥ 65, age < 65, adjusted multivariable logistic regression. aOR adjusted odds ratio, SI spinal injury. *All subgroups except RTS < 7 were adjusted by country, age, sex, scene-to-hospital time, mechanism, prehospital fluid management, cervical spinal injury, thoracic spinal injury, lumbar spinal injury, torso injury, revised trauma score, ISS, received spine operation, and received other operations. **Due to the small subgroup size, multivariable logistic regression was not applicable.