Table 2.

Correlation of Bifrontal Index Rate with demographic factors, disease severity and the duration of symptoms in the two groups.

	BFI
	Patients with Alzheimer's disease			Patients with frontotemporal dementia
	Spearman's correlation (rs)	p value		Spearman's correlation (rs)	p value
Age, y	0.282	0.216‡		0.214	0.326‡
Dementia duration,y	0.029	0.902‡		0.079	0.722‡
MMSE score	-0.491	0.024*		-0.647	0.001†
FAQ	0.495	0.023*		0.375	0.078‡
Education, y	-0.246	0.282‡		0.068	0.759‡
CDR	0.315	0.164‡		0.395	0.062‡

^*Denotes p value of <0.05;

^†Denotes p value of <0.001;

^‡Differences of modalities not significant (p>0.05); MMSE, Mini-Mental State Examination; CDR, Clinical Dementia Rating; BFI, Bifrontal Index; EPSs, Extrapyramidal Signs; FAQ, Pfeffer-Functional Activities Questionnaire