Table 2 Electroencephalogram abnormalities with each protocol among 85 patients completing the study.

	n (%)	Sensitivity
Paroxysmal spike and wave	36 (43%)
Yield SD‐EEG	33	0.92
Yield DI‐EEG	21	0.58
Yield r‐EEG	16	0.44
Focal	15 (18%)
Yield SD‐EEG	11	0.73
Yield DI‐EEG	4	0.27
Yield r‐EEG	6	0.40
3 normal EEGs	33 (39%)
Generalised slow waves	1 (1%)
Yield SD‐EEG	1	100.00
Yield DI‐EEG	1	100.00
Yield r‐EEG	0	0.00

DI‐EEG, EEG during drug‐induced sleep, EEG, electroencephalogram; r‐EEG, routine EEG; SD‐EEG, EEG after sleep deprivation.