Vocabulary Is an Appropriate Measure of Premorbid Intelligence in a Sample with Heterogeneous Educational Level in Brazil

Table 1

Demographic characteristics of the sample divided into diagnostic groups.

	NC (𝑛=61)				aMCI (𝑛=38)				AD (𝑛=45)				P
	Mean	SD	Min	Max	Mean	SD	Min	Max	Mean	SD	Min	Max
Gender (F/M)	35/26				24/14				26/19				0.83
Age	70.66	(6.55)	60	91	72.32	(7.94)	61	89	75.80	(4.81)	65	86	<0.01^a
Education	8.72	(5.44)	1	21	7.03	(4.87)	0	16	6.96	(4.57)	1	19	0.13

Note. P value for gender comparisons refers to the chi-square test, and, for age and education, it refers to the Kruskal-Wallis test; ^aNC differ from AD; aMCI differs from AD. F: female; M: male; SD: standard deviation; NC: normal controls; aMCI: amnestic mild cognitive impairment; AD: Alzheimer’s disease; Min: minimum value; Max: maximum value.