Table 1.

Patient characteristics by seizure category.

Variable	Total N	No Seizures N (%)	Electrographic Seizures N (%)	Electrographic Status Epilepticus N (%)	p-value
Total N=200	200	116 (58%)	41 (20.5%)	43 (21.5%)
Age in Years Median [Interquartile Range]		4.3 [1, 11.7]	1.3 [0.4, 3.9]	5.4 [0.6, 10]	0.005
Sex	200
Male	112	64 (57%)	21 (19%)	27 (24%)	0.54
Female	88	52 (59%)	20 (21%)	16 (18%)
Pediatric Risk of Mortality (PRISM) III Score at 24 hours	154	12 [5,22]	8 [2,15]	8 [5,16]	0.16
Acute Neurologic Disorder Category					0.12
Epilepsy with altered mental status following a seizure	41	18 (44%)	13 (32%)	10 (24%)
Hypoxic Ischemic Encephalopathy	50	32 (64%)	10 (20%)	8 (16%)
Encephalitis	22	12 (55%)	2 (9%)	8 (36%)
Traumatic Brain Injury	19	13 (68%)	1 (5%)	5 (26%)
Stroke	13	5 (38%)	4 (31%)	4 (31%)
Sepsis	8	6 (75%)	0 (0%)	2 (25%)
Posterior Reversible Leukoencephalopathy Syndrome	4	1 (25%)	1 (25%)	2 (50%)
Neurosurgical Procedure	12	7 (58%)	3 (25%)	2 (17%)
Provoked Seizure	14	11 (79%)	1 (7%)	2 (14%)
Systemic/Metabolic	17	11 (65%)	6 (35%)	0 (0%)
Prior Normal Neurodevelopment	124	70 (57%)	25 (20%)	29 (23%)	0.7
EEG Background Category					<0.001
Normal or Sedated-Sleep	30	29 (97%)	1 (3%)	0 (0%)
Slow and Disorganized	136	68 (50%)	35(26%)	33 (24%)
Discontinuous or Burst-Suppression	23	9 (39%)	4 (17%)	10 (44%)
Attenuated and Featureless	11	10 (91%)	1 (9%)	0 (0%)
PICU Length of Stay (days)	200	6.5 [3,18]	9 [3,22]	7 [3,16]	0.54
Hospital Length of Stay (days)	200	12.5 [4.5, 33]	17 [7, 35]	16 [7,28]	0.28
Indication for EEG Monitoring	200				<0.001
Acute encephalopathy with prior convulsion	99	43 (43%)	27 (27%)	31 (31%)
Acute encephalopathy without prior convulsion	100	73 (73%)	14 (14%)	12 (12%)
Abnormal movements or vital sign fluctuations	200				0.313
Yes	172	97 (57%)	35 (20%)	40 (23%)
No	28	19 (68%)	6 (21%)	3 (11%)