Skip to main content

Table 1 Characteristics of the sample

From: Nonlinear changes in delayed functional network topology in Alzheimer’s disease: relationship with amyloid and tau pathology

 

CN Aβ − (n = 81)

CN Aβ + (n = 36)

MCI Aβ + (n = 31)

AD Aβ + (n = 18)

p-values

Age

75.5 (32.5)

78.0 (27.8)

79.5 (30.1)

84.5 (29.3)

 < 0.001

Sex (M/F)

34/47

19/17

16/15

9/9

0.654

Education

18.0 (10.0)

16.0 (8.0)

16.0 (12.0)

15.0 (7.0)

0.017

APOE ε4

63/17/1

19/16/1

14/10/7

11/6/1

 < 0.001

Global Aβ SUVR

1.0 (0.2)

1.3 (0.6)

1.4 (1.2)

1.4 (0.8)

 < 0.001

Braak I–II SUVR

1.1 (0.5)

1.1 (0.6)

1.3 (1.0)

1.5 (1.9)

 < 0.001

Braak III–IV SUVR

1.1 (0.5)

1.2 (0.4)

1.2 (0.9)

1.4 (2.0)

 < 0.001

Braak V–VI SUVR

1.0 (0.4)

1.0 (0.4)

1.1 (0.9)

1.1 (1.2)

 < 0.001

ADAS 13

12.0 (21.7)

13.3 (27.3)

19.3 (27.0)

32.3 (26.7)

 < 0.001

ADAS Q4

2.0 (6.0)

3.0 (7.0)

5.0 (7.0)

8.0 (5.0)

 < 0.001

mPACC

1.5 (15.5)

 − 0.4 (19.0)

 − 3.9 (16. 9)

 − 14.9 (26.4)

 < 0.001

CF

22 (28)

22 (22)

16 (20)

13.5 (14)

 < 0.001

Trail A

30 (48)

32 (37)

39 (50)

51.5 (129)

 < 0.001

Trail B

2 (6)

3 (7)

5 (7)

8 (5)

 < 0.001

  1. Medians for each group are followed by range of values in parenthesis, except for sex. APOE ε4 values show the number of ε4 copies (zero/one/two). Comparisons between groups were performed using Kruskal–Wallis tests for continuous variables and with chi-squared tests for binary variables. CN, cognitively normal; MCI, mild cognitive impairment; AD, Alzheimer’s disease; Aβ, amyloid-β; APOE ε4, apolipoprotein E ε4; ADAS 13, 13-item Alzheimer’s Disease Assessment Scale–Cognitive Subscale; ADAS Q4, delayed word recall item of the Alzheimer’s Disease Assessment Scale–Cognitive Subscale; mPACC, Modified Preclinical Alzheimer Cognitive Composite; CF, Category verbal fluency; Trail A and Trail B, Trail Making Test Parts A and B respectively; SUVR, standardized uptake value ratio