Neural correlates of visual hallucinations in dementia with Lewy bodies

Table 2 Comparison of cognitive ability between the DLB-hallu and DLB-c groups ( N = 66) ^a

	DLB-hallu ( n = 36)		DLB-c ( n = 30)		P -value
	Tested patients, n (%)	Mean (SD)	Tested patients, n (%)	Mean (SD)	P -value
FAB (18^b)	21 (58)	10.7 (4.49)	19 (63)	10.7 (4.37)	0.967
FCSRT
IR (16^b)	22 (61)	14 (1.72)	15 (60)	13.8 (3.14)	0.637
FR (48^b)	22 (61)	16.7 (7.53)	15 (60)	13.2 (10.11)	0.276
TR (48^b)	22 (61)	39.6 (8.46)	15 (60)	32.7 (14.37)	0.160
CFR (16^b)	20 (56)	6.2 (3.48)	13 (43)	5.3 (3.73)	0.592
CTR (16^b)	20 (56)	13.8 (2.73)	13 (43)	12.9 (3.39)	0.353
TMT A^c	17 (47)	99.5 (51.08)	21 (70)	92.9 (47.34)	0.713
TMT B^c	17 (47)^d	176.2 (89.42)	21 (70)^e	215.1 (104.07)	0.339
Digit span test
Direct	20 (56)	4.8 (1.28)	16 (53)	4.6 (0.89)	0.555
Indirect	19 (53)	3.2 (1.23)	16 (53)	2.8 (0.86)	0.358
Lexical evocation
Formal	21 (58)	10.4 (7.70)	17 (57)	10.7 (7.32)	0.596
Semantic	23 (64)	16.2 (9.96)	17 (57)	14.9 (7.89)	0.784
Rey-Osterrieth Complex Figure Test (36^b)	11 (31)	29 (6.4)	13 (43)	28.7 (8.87)	0.704

^aCFR, Cued free recall; CTR, Cued total recall; DLB-c, Control group of patients with dementia with Lewy bodies who were not having visual hallucinations; DLB-hallu, Study group of patients with dementia with Lewy bodies who were having visual hallucinations; FAB, Frontal assessment battery; FCSRT, Free and Cued Selective Remaining Test; FR, Free recall; IR, Immediate recall; SD, Standard; TMT, Trail Making Test; TR, Total recall. ^bTotal possible score. ^cMeasured in seconds. ^dSeven patients failed to finish this test. ^eNine patients failed to finish this test.

ISSN: 1758-9193