Table 2 Descriptive statistics (number and percentage) of REVEAL study participants by recruitment cohort

Age ≥60 years

147 (59.0%)

223 (40.8%)

<0.001

Male

87 (34.9%)

182 (33.3%)

0.666

Black/African American

86 (34.5%)

81 (14.8%)

<0.001

College degree or higher*

130 (66.3%)

339 (70.0%)

0.343

Household income ≥ $70 K*

83 (45.1%)

264 (57.1%)

0.006

Has an AD-affected first-degree relative (parent or sibling)

216 (86.7%)

458 (83.9%)

0.297

Has an AD-affected family member beyond first-degree relatives

106 (44.2%)

281 (51.6%)

0.056

Employed part/full time*

99 (50.5%)

323 (66.9%)

<0.001

ε4 carrier^†

46 (33.6%)

144 (37.1%)

0.459

Site by referral cohort

<0.001

  Boston University

122 (49.0%)

126 (23.1%)

  Case Western Reserve

46 (18.5%)

145 (26.6%)

  Howard University

63 (25.3%)

115 (21.1%)

  Weill School of Medicine

11 (4.4%)

84 (15.4%)

  University of Michigan

7 (2.8%)

76 (13.9%)

Trial by referral cohort

<0.001

  Second trial

160 (64.3%)

263 (48.2%)

  Third trial

89 (35.7%)

283 (51.8%)