Table 3 Correlation between the IQCODE, the MMSE, and the RAVLT immediate and delayed recall scores with sociodemographic and clinical features of patients with MCI (n = 45).

		IQCODE		MMSE		Immediate recall		Delayed recall
IQCODE		1.0		–		–		–
MMSE		−0.39*		1.0		–		–
Immediate recall		−0.45*		0.24		1.0		–
Delayed recall		−0.59*		0.45*		0.70*		1.0
Age		0.55*		−0.15		−0.39*		−0.39*
Education		−0.25		0.30		0.23		0.17
Disease duration		−0.01		−0.22		0.00		−0.03

Pearson's r coefficients. *p<0.05. MMSE, Mini Mental State Examination; IQCODE, Informant Questionnaire on Cognitive Decline in the Elderly