Table 2.

Outcome measures comparing EEGs with HV and without HV.

	EEG with HV	EEG without HV	p Value
IED-yes, % (n)	65.2% (15/23)	34.8% (8/23)	0.016
during PS, % (n)	21.7% (5/23)	17.4% (4/23)	1
during HV, % (n)	39.1% (9/23)	-
during drowsiness, % (n)	10.0% (2/20)	9.5% (2/21)	1
during sleep, % (n)	6.7% (1/15)	0% (0/14)	1
Number of IEDs/EEG *	1.6 ± 1.8	0.9 ± 1.5	0.073
Number of IED/min × 10−1 *	7.9 ± 9.2	5.5 ± 9.5	0.27

* Expressed as mean ± standard deviation.