Table 3

Performance of individual patients with either vascular dementia or probable Alzheimer’s disease on all cognitive domains, using impairment on the two most sensitive tasks in each domain as a measure of impairment in that domain

Group	Subject	MMSE	Episodic memory	Semantic memory	Executive/attentional function	Visuospatial function
The tasks used are as follows: episodic memory – Rey delayed recall, recognition memory test for words; semantic memory – category fluency, camel and cactus test; executive/attentional function – Wisconsin card sorting, STROOP; visuospatial function – Rey copy, dot counting.
Although the table seems to show that three VaD patients (KE, VP, DB) and one DAT patient (PS) had no impairment in any cognitive domain, all four patients showed deficits on other tasks not included in the table.
DAT, dementia of Alzheimer type; VaD, vascular dementia; +, impaired.
VaD	SE	30	–	+	+	+
VaD	RB	29	+	–	+	+
VaD	RD	29	+	+	+	+
VaD	KE	29	–	–	–	–
VaD	VP	29	–	–	–	–
VaD	DB	28	–	–	–	–
VaD	EJ	27	+	+	+	+
VaD	PR	27	+	+	+	–
VaD	LW	27	+	+	+	+
VaD	PH	26	+	+	–	+
VaD	SM	26	+	+	+	+
VaD	RY	26	+	+	+	–
VaD	CG	24	+	+	+	+
VaD	HP	24	+	+	–	+
VaD	HG	22	+	+	+	+
VaD	IB	20	+	+	+	+
VaD	MW	20	+	+	+	+
VaD	RS	19	+	+	+	+
VaD	HK	18	+	+	+	+
% VaD patients impaired:			78.9	78.9	73.7	73.7
DAT	PS	30	–	–	–	–
DAT	AA	29	–	+	+	–
DAT	IHe	28	–	–	+	–
DAT	DJ	27	+	–	–	–
DAT	MR	27	+	–	–	–
DAT	BK	26	+	–	–	–
DAT	EL	26	+	–	–	–
DAT	JP	26	+	–	–	+
DAT	JS	26	+	–	–	–
DAT	MU	25	+	+	+	+
DAT	AD	24	+	–	+	+
DAT	JW	24	+	+	+	+
DAT	BC	23	+	–	+	+
DAT	RG	22	+	–	+	+
DAT	IW	21	+	–	+	–
DAT	PB	20	+	–	+	–
DAT	IHu	20	+	+	–	+
DAT	JA	18	+	+	+	–
DAT	VM	17	+	+	+	+
% DAT patients impaired:			84.2	31.6	57.9	42.1