Table 1.

Demographic characteristics of the overall MRI sample classified according to the severity of BG-PVS.

	Mild BG-PVS group	Severe BG-PVS group	Statistical test	P value
Number	316 (77.83%)	90 (22.17%)
Mean age at MRI (SD)	68.27 (7.45)	73.57 (8.03)	Student's t	<0.001***
Male (%)	120 (37.97)	49 (54.44)	χ2	0.005**
MMSE score	28.84 (1.06)	28.77 (1.02)	Mann-Whitney U	0.466

BG-PVS, basal ganglia perivascular spaces; MMSE, Mini-Mental State Exam; SD, standard deviation.

^* P < 0.05;

^** P < 0.01;

^***P < 0.001.