Table 5.

Comparison of adjusted means (SD) from composite scores of neuropsychological tests among subjects with possible and probable AD and with 0 to 5 risk factors

# of risk factors	Memory performance	Abstract/visuospatial performance	Language performance
0	24.3 (1.9)	40.3 (2.4)	70.4 (4.1)
1	26.4 (0.9)	40.0 (1.2)	78.0 (1.8)
2	24.6 (0.7)	41.1 (0.9)	77.8 (1.5)
3	25.9 (1.2)	44.0 (1.8)	79.8 (2.5)
4	25.0 (2.7)	42.2 (4.6)	82.1 (5.7)
p-value	0.555	0.467	0.350

All models adjusted for age, gender, education, ethnicity and APOEε4 allele.