Risk factors for delusion of theft in patients with Alzheimer's disease showing mild Dementia in Japan

Figures & data

Table 1. Age, years of education, MMSE and HDS-R scores of the AD patients.

	Mean (SD)
	D-group (n = 14)	Non-D-group (n = 42)	p-score
Age (years old)	77.2 (6.1)	78.6 (4.9)	0.434
Years of education (years)	11.4 (2.6)	10.1 (2.3)	0.307
MMSE	20.6 (3.0)	19.8 (2.2)	0.531
HDS-R	17.7 (2.8)	18.2 (2.7)	0.359
Note: D-group: patients showing delusion theft; non-D-group: patients not showing delusion of theft. MMSE: Mini Mental State Examination; HDS-R: Hasegawa's dementia scale-Revised. Statistical analysis was conducted using the t-test.

Table 2. Qualitative data on the AD patients.

		D-group (n = 14)	Non-D-group (n = 42)	Total (n = 56)
Gender	Female	13 (33.3)	26 (66.7)	39 (100.0)*
	Male	1 (5.9)	16 (94.1)	17 (100.0)
Presence of cohabiting family members
Any family member	Presence	6 (13.6)	38 (86.4)	44 (100.0)*
	Absence	8 (66.7)	4 (33.3)	12 (100.0)
Only spouse	Presence	2 (11.1)	16 (88.9)	18 (100.0)*
	Absence	10 (40.0)	15 (60.0)	25 (100.0)
Only children	Presence	4 (26.7)	11 (73.3)	15 (100.0)
	Absence	10 (33.3)	20 (66.7)	30 (100.0)
Both spouse and children	Presence	0 (0.0)	11 (100.0)	11 (100.0)*
Absence	14 (31.1)	31 (68.9)	45 (100.0)
Premorbid personality traits
Neurotic personality	Presence	13 (35.1)	24 (64.9)	37 (100.0)*
	Absence	1 (5.3)	18 (94.7)	19 (100.0)
Extravert personality	Presence	10 (30.3)	23 (69.7)	33 (100.0)
	Absence	4 (17.4)	19 (82.6)	23 (100.0)
‘Speech sample’ of COGNISTAT	Understand	12 (38.7)	19 (61.3)	31 (100.0)*
the relation between two boys	Not understand	3 (12.0)	22 (88.0)	25 (100.0)
Note: D-group: patients showing delusion theft; non-D-group: patients not showing delusion of theft. Numerals in parentheses represent percentages. Statistical analysis was conducted using the Fisher's exact probability test; *p < 0.05.

Table 3. Sub-item scores on COGNISTAT.

	Mean (SD)
	D-group (n = 14)	Non-D-group (n = 42)
Orientation	5.5 (3.5)	6.2 (3.2)
Attention	9.1 (2.6)	8.9 (2.8)
Comprehension	8.5 (1.6)	7.3 (2.5)
Repetation	9.9 (1.3)	9.8 (1.6)
Naming	8.5 (1.5)	7.7 (2.4)
Construction	7.0 (1.8)	7.7 (1.8)
Memory	5.9 (1.3)	6.0 (1.6)
Calculation	9.6 (1.6)	8.3 (2.5)
Similarities	8.9 (1.1)	8.7 (1.0)
Judgement	9.8 (1.3)	9.6 (1.5)
Note: D-group: patients showing delusion theft; non-D-group: patients not showing delusion of theft. Statistical analysis was conducted using the t-test.