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Table 1 Demographic data and group comparison in participants at three time points

From: The effect of amyloid deposition on longitudinal resting-state functional connectivity in cognitively normal older adults

 

Baseline

Visit 1

Visit 2

Variable

(N = 59)

(N = 40)

(N = 7)

Age at enrollment, mean (SD)

75.9 (6.2)

75.1 (6.4)

77.8 (5.5)

Male, no. (%)

19 (32.2%)

15 (37.5%)

2 (28.6%)

Years of education, mean (SD)

14.6 (2.4)

14.7 (2.6)

14.6(2.8)

Mini-Mental State Examination, mean (SD)

28.7 (1.4)

28.7 (1.5)

28.4 (1.5)

Race/ethnicity, no. (%)

 White

49 (83.1%)

32 (80.0%)

5 (71.4%)

 Black

9 (15.3%)

7 (17.5%)

1 (14.3%)

 Asian

1 (1.7%)

1 (2.5%)

1(14.3%)

APOE ε4 allele carrier, no. (%)

 Carrier

11 (18.6%)

28 (70.0%)

1(14.3%)

 Non-carrier

38 (64.4%)

10 (25.0%)

6 (85.7%)

 Data unavailable

10 (16.9%)

2 (14.3%)

0

Global PiB SUVR, mean (SD)

1.5 (0.4)

1.5 (0.3)

1.6 (0.6)

PiB status, no. (%)

 Baseline

  PiB(+)

25 (42.4%)

15 (37.5%)

3 (42.9%)

  PiB(−)

34 (57.6%)

25 (62.5%)

4 (57.1%)

Intracranial volume (cubic mm)

1,771,813 (187,320.3)

1,814,635 (209,336.6)

1,888,776 (248,791)

Glucose metabolism (FDG SUVR)

1.1(0.1)

1(0.1)

1.1(0.1)

Normalized hippocampal volume

0.01 (0.04)

0.01 (0.00)

0.03 (0.00)

Normalized WMH volume

2.5 (0.6)

2.4(0.6)

2.5(0.5)