. 2021 Sep 30;44(1):195–209. doi: 10.1007/s11357-021-00450-x

Table 1.

Demographic information at baseline and 48-month timepoints. Means and standard deviations (in parentheses) are detailed for quantitative variables, while gender data are represented by means of absolute frequency ratios (male/female) and percentage of male/female individuals (in parentheses). Importantly, no significant between-group differences were found at any of the evaluation timepoints

	APOE4 − _Aβ-	APOE4 + _Aβ-	APOE4 − _Aβ +	APOE4 + _Aβ +
Age
Baseline	71.570 (7.049)	70.013 (5.071)	74.160 (4.519)	73.660 (6.708)
48-months	74.150 (5.901)	71.259 (5.541)	74.841 (4.078)	73.980 (5.907)
Education
Baseline	16.833 (2.214)	15.866 (2.515)	15.400 (2.268)	16.533 (2.501)
48-months	16.72 (2.270)	15.76 (2.538)	15.00 (1.904)	16.27 (3.011)
Gender (male/female)
Baseline	16/14 (53.3/46.7)	10/20 (33.3/66.7)	9/21 (30.0/70.0)	11/19 (36.7/63.3)
48-months	12/6 (66.7/33.3)	6/11 (35.3/64.7)	4/13 (23.5/76.5)	8/7 (53.3/46.7)

APOE4 − _Aβ-

APOE4 + _Aβ-

APOE4 − _Aβ +

APOE4 + _Aβ +

Age

Baseline

71.570

(7.049)

70.013

(5.071)

74.160

(4.519)

73.660

(6.708)

48-months

74.150

(5.901)

71.259

(5.541)

74.841

(4.078)

73.980

(5.907)

Education

Baseline

16.833

(2.214)

15.866

(2.515)

15.400

(2.268)

16.533

(2.501)

48-months

16.72

(2.270)

15.76

(2.538)

15.00

(1.904)

16.27

(3.011)

Gender (male/female)

Baseline

16/14

(53.3/46.7)

10/20

(33.3/66.7)

9/21

(30.0/70.0)

11/19

(36.7/63.3)

48-months

12/6

(66.7/33.3)

6/11

(35.3/64.7)

4/13

(23.5/76.5)

8/7

(53.3/46.7)