Table 1.

Characteristics of the enrolled patients (n:259).

Variables	n	% (95% CI)
Age	259	60 (45,76)*
Female gender	139/259	54% (48–60)
Presenting Symptom
Confusion	106/259	41% (36–46)
Lethargy	67/259	26% (21–30)
Coma/unresponsive	63/259	24% (20–29)
Agitation	33/259	13% (10–17)
Delirium	9/259	3% (2–6)
Unexpected psychosis	8/259	3% (2–5)
Acute Head Injury	24/259	10% (7–13)
History of seizure	104/259	40% (34–46)
Seizure activity in the field	82/259	32% (26–38)
Seizure activity in the ED	61/259	24% (19–29)
Anticonvulsive medication in the field	19/259	7% (5–11)
Anticonvulsive medication in the ED**	169/259	65% (59–71)
Abnormal Neurological examination (other than AMS)	73/259	28% (22–33)
Acute head CT findings	47/232	20% (15–26)
Hospital admission (overall)	221/259	84% (79–88)
ICU admission	55/259	21% (16–26)

^*Median and quartiles

^**Includes cases where benzodiazepines were given for sedation.

Abbreviations: CI, confidence interval; ED, emergency department; CT, computerized tomography scan; ICU, intensive care unit