Table 1. Demographic characteristics between controls and moyamoya patients.

Characteristic	Control (n = 243)	Moyamoya(n = 107)	P *	Ischemicmoyamoya(n = 92)	Hemorrhagic moyamoya(n = 15)	P *
Number of subjects
<18 years	102 (42.0)	56 (52.3)		54 (58.7)	2 (13.3)
≥18 years	141 (58.0)	51 (47.7)		38 (41.3)	13 (86.7)
Age (means±SD)
<18 years	7.71±4.05	7.98±4.13	0.920	8.11±4.12	4.50±3.54	NA
≥18 years	36.72±10.05	34.98±11.29	0.248	34.63±11.45	36.00±11.21	0.689
Sex [male, n(%)]
<18 years	54 (52.9)	22 (39.3)	0.100	21 (38.9)	1 (50.0)	1.000†
≥18 years	51 (21.0)	14 (27.5)	0.260	12 (31.6)	2 (15.4)	0.472†
Collateral vessel formation score (n = 64)
0	–	2
1	–	22
2	–	40

^* P values were calculated using the Mann-Whitney test for continuous data and χ²-test for categorical data.

^†Fisher's exact test. NA; not applicable.