. Author manuscript; available in PMC: 2025 Mar 1.

Published in final edited form as: Ann Child Neurol Soc. 2024 Jan 10;2(1):60–72. doi: 10.1002/cns3.20058

Table 2. Comparison between Seizure Onset by 2 Years and Sturge-Weber Extent.

		Seizure Onset Before 2		No Seizure Onset Before 2
Sturge-Weber Extent	Extent of Involvement	n	%	n	%	Median Age of Seizure Onset (days)	P-value
Brain involvement	Unilateral	53	75.5	17	77.3	199.0	.006
Brain involvement	Bilateral	17	24.3	5	22.7	112.0	.006
Skin involvement	None	10	14.3	0	0	228.0	.005
	Unilateral	33	47.1	15	68.2	261.0
	Bilateral	27	38.6	7	31.8	123.0
Eye Involvement	None	34	48.6	13	59.1	198.0	.272
	Unilateral	23	32.9	6	27.3	180.0
	Bilateral	13	18.6	3	13.6	110.0
Total SWS involvement	1	10	14.3	0	0	228.0	.057
	2	14	20.0	11	50.0	267.5
	3	19	27.1	2	9.1	180.0
	4	16	22.9	7	31.8	140.5
	5	3	4.3	0	0	62.0
	6	8	11.4	2	9.1	84.5