Table 4.

Road-traffic injury-Related head injury (HI) from Nigeria: brain and systemic trauma severity categorization.

Brain/injury severity	Proportion
Severity of HI using the GCS
Mild (GCS 13–15)	415 (49.8)
Moderate (GCS 9–12)	230 (27.6)
Severe (GCS 3–8)	188 (22.6)
AIS_Head
1–3	221 (26.5)
>3	612 (73.5)
Brain CT Rotterdam score (N = 584)
1–2	288 (49.3)
≥3	296 (50.7)
Injury Severity Score (ISS)
Median	26.0 (IQR 17–34)
ISS 1–25	412 (49.5)
ISS > 25	421 (50.5)

Numbers in parentheses are % unless otherwise stated.

AIS, Abbreviated Injury Scale (version 1990); CT, computed tomography; GCS, Glasgow Coma Scale; HI, head injury; IQR, interquartile range.