Table 1

Items extracted or derived from original studies

Study and patient characteristics Results
Publication yearNumber of skull radiographs
Retrospective/prospectiveNumber of CTs
Number of referralsTrue positive number (TP)
Number of patientsTrue negative number (TN)
Age distributionFalse positive number (FP)
Mean ageFalse negative number (FN)
Injury severity (GCS)Number of ICHs
Percentage with LOC and/or PTANumber of interventions
Focal neurologyNumber of deaths
Other injuries
  • LOC=Loss of consciousness, PTA=post-traumatic amnesia.