Table 3. Comparison of shunt positivity between the dWMH and dpWMH groups.

Variables		dWMH group (n=27)	dpWMH group (n=12)	p-value
Saline shunt test		22/27 (81.5)	4/12 (33.3)	0.003
	Intracardiac shunt	18/22 (81.8)	2/4 (50.0)
	Extracardiac shunt	4/22 (18.2)	2/4 (50.0)
Shunt grade		1.8±1.2	0.5±0.9	0.003
	0	5 (18.5)	8 (66.7)
	I	4 (14.8)	1 (8.3)
	II	12 (44.4)	3 (25)
	III	4 (14.8)	0 (0)
	IV	2 (7.4)	0 (0)

Values are presented as number (%) or mean ± standard deviation.

dWMH: deep-only WMH pattern in which WMHs are mainly located in the corticomedullary junction or deep white matter, accompanied by little or no periventricular WMH, dpWMH: WMH pattern that is commonly seen in individuals with cerebral small vessel disease, where main periventricular WMH with or without deep WMH is accompanied by one or more lacunes, WMH: white matter hyperintensity.