Table 3.

Intercept and slope parameters (β-estimates) for each cognitive test for base mixed-effects models comparing ε4-carriers and non-carriers.

	Trails B	Category Fluency	Buschke Total Recall	MMSE
Intercept	109.51 ***	19.54 ***	44.81 ***	27.29 ***
Age	−21.62 ***	−0.11	1.36	1.04 ***
Age Squared	13.02 ***	−0.42 ***	−1.46 ***	−0.41 ***
Retest	−1.62	-	-	0.58 ***
Sex	−6.97	2.01 ***	−3.88 ***	0.41 *
Education	2.95	1.51 *	0.49	0.06
ε4	−23.31 *	2.33 *	1.12	0.80
Age × Sex	−2.21	−0.42 *	−0.16	−0.29 ***
Age × Education	−5.13 *	−0.23	0.44	0.15
Age × ε4	17.21 ***	−1.12 **	−0.70	−0.34
Sex × ε4	−1.99	−0.92	−1.61	−0.45 *
Education × ε4	25.51 *	−1.22	0.56	−0.74
Age × Education × ε4	−14.97 **	0.88	0.28	0.32

^*p < 0.05,

^**p < 0.01,

^***p < 0.001.

The intercept shows the modeled score of a 50 year old; the age term is the modeled change in score per ten-year increase in age over age 50.