Longitudinal Changes in the Government-Certified Index Stage and Requisite Costs for Long-Term Care Insurance System among the Community-Dwelling Demented Elderly in Japan

Table 2

Demographic variables of AD and VaD patients.

	AD (𝑁=110)	VaD (𝑁=48)	𝑃 value
Mean age (at 2000)	85.8±7.0	82.2±5.9	0.002 (𝑡 test)
Sex (M : F)	15 : 95	15 : 33	0 .009 (𝜒^2 test)
CDR grade (1 : 2 : 3 at 2000)	35 : 40 : 35	23 : 15 : 10	0.134 (𝜒^2 test)
MMSE score (at 2000)	15.7±5.0	14.8±5.5	0.413 (𝑡 test)
N-ADL score (at 2000)	32.7±12.3	28.6±14.5	0.124 (𝑡 test)
Coexisting physical; diseases (any/nothing at 2000) (%)	71 : 39	44 : 4	0.000 (𝜒^2 test)
	64%	92%
Survival ratio; (alive/dead at 2007)	39 : 79	9 : 31	0.210 (𝜒^2 test)
Total duration of certified until 2007; (month)	50.9±31.6	57.3±30.3	0.260 (Mann-Whitney 𝑈 test)

AD: Alzheimer’s disease; VaD: vascular dementia.