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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

 BaselineVisit 1Visit 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. (%)
 White49 (83.1%)32 (80.0%)5 (71.4%)
 Black9 (15.3%)7 (17.5%)1 (14.3%)
 Asian1 (1.7%)1 (2.5%)1(14.3%)
APOE ε4 allele carrier, no. (%)
 Carrier11 (18.6%)28 (70.0%)1(14.3%)
 Non-carrier38 (64.4%)10 (25.0%)6 (85.7%)
 Data unavailable10 (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 volume0.01 (0.04)0.01 (0.00)0.03 (0.00)
Normalized WMH volume2.5 (0.6)2.4(0.6)2.5(0.5)