Table 3. Demographic and clinical characteristics of patients stratified according to SVD burden.

Characteristic	Group 1a (n=27)	Group 2b (n=74)	Group 3c (n=56)	P value
Age, years	61.33 + 6.46	65.18 + 7.39	67.29 + 6.97	0.002*
Male	24 (88.9)	59 (79.7)	44 (78.6)	0.320
Education, years	10.81 + 3.37	10.53 + 2.92	10.38 + 2.66	0.813
Hypertension	18 (66.7)	52 (70.3)	42 (75)	0.407
Diabetes	6 (22.2)	32 (43.2)	17 (30.4)	0.842
Hypercholesterolemia	3 (11.1)	12 (27.3)	10 (17.8)	0.461
Current smoking	18 (66.7)	37 (50.0)	24 (42.9)	0.052
Current drinking	12 (44.4)	15 (20.3)	13 (23.2)	0.097

Values are n (%) or mean + SD. Abbreviations: SD, standard deviation. ^aTotal SVD score = 0 point. ^bTotal SVD score = 1-2 point(s). ^cTotal SVD score = 3-4 points. *P<0.05.