Table 2.

Predictor Variables for Intracranial Injury

VariableOdds RatioConfidence IntervalPositive Predicted Value, %Negative Predicted Value, %
Headache0.870.38 –2.007.991.0
Progressive headache0.970.12 –7.778.391.4
Dizziness0.940.31 –2.838.291.3
Vomiting1.510.67 –3.3710.992.5
Drowsiness1.440.65 –3.2210.092.9
Seizure2.950.91 –9.5420.092.2
Amnesia1.440.47 –4.4311.491.8
Loss of consciousness (any)1.030.42 –2.539.091.2
Loss of consciousness (>5 min)*3.511.28 –9.6422.292.5
Abrasion1.950.88 –4.3212.193.4
Contusion1.310.58 –2.9210.092.2
Laceration1.400.50 –3.9211.191.8
Hematoma1.820.82 –4.0211.493.4
Skull depression1.800.21 –15.5414.391.5
Signs of basilar fracture*8.841.87 –41.8342.992.2
Altered mental status*4.101.74 –9.6521.793.7
Focal deficit*8.152.14 –30.9440.092.4
Skull fracture*21.456.42 –71.6326.898.3
  • * P < .05.