Table 2.
Characteristics of analysis participants.
| Elevated amyloid (n = 1280) | Not elevated amyloid (n = 3047) | Total (n = 4327) | |
|---|---|---|---|
| Male | 530 (41.4%) | 1231 (40.4%) | 1761 (40.7%) |
| Family history of AD | 626 (48.9%) | 1228 (40.3%) | 1854 (42.9%) |
| Age | 72.04 (4.87) | 70.93 (4.51) | 71.26 (4.65) |
| Years of education | 16.54 (2.81) | 16.59 (2.85) | 16.57 (2.84) |
| Ethnoracial group | |||
| NH white | 1159 (91.6%) | 2648 (87.6%) | 3807 (88.8%) |
| NH Black | 30 (2.4%) | 117 (3.9%) | 147 (3.4%) |
| NH Asian | 29 (2.3%) | 138 (4.6%) | 167 (3.9%) |
| Hispanic | 37 (2.9%) | 96 (3.2%) | 132 (3.1%) |
| Other | 11 (0.9%) | 24 (0.8%) | 35 (0.8%) |
| Missing | 14 (1.1%) | 24 (0.8%) | 38 (0.9%) |
| APOE ε4 carrier | 738 (58.2%) | 762 (25.3%) | 1500 (35.0%) |
| CFI | 2.24 (2.12) | 1.80 (1.97) | 1.93 (2.02) |
Continuous variables are summarized as means (SD), while discrete variables are summarized as counts (%).