Table 1.

Baseline clinical characteristics of the dementia subjects with and without WMH volume results

Variable	n(excl):n(incl)	Excluded	Included	p value
Age, years	157:77	75.8 (7.7)	75.2 (7.2)	0.546
Education, years	145:77	9.7 (3.1)	9.1 (2.4)	0.375
Sex, male:female	158:77	70:87	27:50	0.298a
MMSE	154:77	23.6 (2.8)	24.0 (2.3)	0.387
CVLT-II	158:75	19.9 (8.4)	19.9 (7.5)	0.849
Verbal fluency	161:76	11.3 (4.4)	11.9 (4.4)	0.640
HIS	141:76	4.0 (2.4)	3.0 (2.0)	0.001
APOE ɛ4, yes:no	100:51	62:38	31:20	0.885b
CDR-SOB	139:74	5.8 (2.7)	4.5 (2.1)	0.001
CIRS	135:73	0.16 (0.51)	0.16 (0.41)	0.477

Values in parentheses are standard deviations. Mann-Whitney U test was used, except if otherwise indicated. n(excl) = Number of patients in the excluded group; n(incl) = number of patients in the included group. APOE ɛ4 yes means subject has at least one APOE ɛ4 allele.

^aPearson's χ² = 2.423;

^bPearson's χ² = 0.021.