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Table 2 Demographic information of individuals excluded from analysis who did not pass QC

From: Race modifies default mode connectivity in Alzheimer’s disease

 Overall (N = 8)Normal cognitionMCI
Caucasian (n = 5)African American (n = 3)Caucasian (n = 4)African American (n = 2)Caucasian (n = 1)African American (n = 1)
Age, years (SD)69.78 (5.83)65.20 (10.25)71.65 (8.39)67.48 (6.17)71.5270.07
Years of Education (SD)16.82 (2.85)16.25 (2.63)16.84 (2.69)16.78 (2.66)17.0816.29
MMSE (SD)27.82 (4.90)28.91 (3.57)28.94 (0.86)27.75 (1.86)27.6426.67
Cognitive Z Scores0.89 (2.62)0.82 (1.89)−0.02 (0.62)0.01 (0.71)0.840.75
Having ABCA7 risk allele, (number)120111
Have Diabetes, (number)01010.00
Have Hypertension (number)221111
CSF Aβ42, pg/ml (SD)133.34 (95.02)139.81 (140.36)200.93 (132.40)164.27 (98.6)201.11134.69
CSF t-Tau, pg/ml (SD)72.84 (49.63)40.92 (20.79)51.68 (30.96)36.04 (11.63)63.9935.438
CSFp-Tau 181, pg/ml (SD)42.71 (20.98)29.90 (15.60)37.44 (16.29)22.95 (8.46)29.6517.25
CSF t-Tau/Aβ420.79 (0.81)0.26 (0.21)0.85 (0.87)0.15 (0.16)0.460.22