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Table 1 Prognostic factors being investigated

From: A protocol for the development of a prediction model in mild traumatic brain injury with CT scan abnormality: which patients are safe for discharge?

Factors from systematic review Type of data Factors from NICE guidelines Type of data Factors from TARN TBI/trauma model Type of data
Age Continuous 1st neurological examination in ED Categorical Admission Hb Continuous
Sex Categorical Equal pupils 1st examination Categorical Admission platelets Continuous
Pre-injury anti-coagulant use Categorical Both pupils reactive 1st examination Categorical Charlson Trauma Modified Comorbidity Index Continuous
Pre-injury anti-platelet use Categorical SIGN of skull fracture 1st examination Categorical Admission BM Continuous
GCS on arrival to ED Categorical Seizures in ED Categorical Frailty score Continuous
BP on arrival ED Continuous Vomiting in ED Categorical   
HAIS Continuous An occupant ejected from a motor vehicle Categorical   
Marshall Classification Categorical Mechanism of injury Categorical   
Single injury Categorical Amnesia Categorical   
Comment on midline shift Categorical Intoxicated EToH time of injury Categorical   
Comment on size of bleed   Seizures before arrival ED Categorical   
Additional injuries Categorical Vomiting before arrival ED Categorical   
Sats on arrival ED Continuous A pedestrian or cyclist struck by a motor vehicle Categorical   
   A fall from height of > 1 m or 5 stairs Categorical   
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Diagnostic and Prognostic Research

ISSN: 2397-7523

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