Table 1 Demographics of the sample.

From: Functional network structure supports resilience to memory deficits in cognitively normal older adults with amyloid-β pathology

 

Total Sample

Aβ-

Aβ+ 

Aβ- vs. Aβ+ 

M ± SD or N (%)

M ± SD or N (%)

M ± SD or N (%)

t or X2

p

Age

72.3 ± 6.2

71.3 ± 5.7

74.4 ± 6.8

-1.92

0.06

Sex (Female)

43 (66.2%)

18 (40.9%)

17 (81.0%)

8.91

0.003

Education (Years)

16.2 ± 2.3

16.3 ± 2.5

16.1 ± 2.0

0.36

0.72

Race (White)

52 (80%)

33 (75%)

19 (90.5%)

2.13

0.15

Ethnicity (Non-Hispanic)

63 (96.9%)

43 (97.7%)

20 (95.2%)

0.30

0.59

MMSE

28.3 ± 1.4

28.3 ± 1.4

28.5 ± 1.4

-0.55

0.59

RAVLT Immediate

12.7 ± 2.0

12.6 ± 2.2

13.0 ± 1.7

-0.67

0.51

FBP Mean SUVR

1.10 ± 0.18

1.00 ± 0.07

1.32 ± 0.15

-12.31

 < 0.001

Aβ+ 

21 (32.3%)

–

–

–

–

  1. Aβ, amyloid-β,; MMSE, Mini Mental State Exam; RAVLT, Rey Auditory Verbal Learning Task; FBP, 18F-florbetapir-PET; SUVR, standardized uptake value ratio; M, mean; SD, standard deviation; N, number.
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