Table 1.
Demographic variables of all participants with comparison of Not elevated (Afi−) and elevated amyloid (Afi+) groups
| Table 1 - Demographics | All Amyloid PET participants N = 4486 | Not Elevated Amyloid (Aβ−) N = 3163 | Elevated Amyloid(Aβ+) N = 1323 | P-value Aβ− vs Aβ+ |
|---|---|---|---|---|
| Age - Mean years (S.D.) | 71.29 (4.67) | 70.95 (4.53) | 72.10 (4.89) | <0.0001 |
| Education - Mean years (S.D.) | 16.58 (2.84) | 16.60 (2.85) | 16.54 (2.81) | 0.5327 |
| PET SUVr Mean (S.D.) | 1.09 (0.19) | 0.99 (0.07) | 1.33 (0.18) | < 0.0001 |
| Sex | 0.6411 | |||
| F | 2663 (59%) | 1885 (60%) | 778 (59%) | |
| Racial Categories | ||||
| White | 4116 (92%) | 2866 (91%) | 1250 (94%) | < 0.0011 |
| Asian | 171 (4%) | 141 (4%) | 30 (2%) | < 0.0011 |
| Black or African American | 167 (4%) | 141 (4%) | 30 (2%) | 0.0071 |
| American Indian or Alaskan Native | 32 (1%) | 22 (1%) | 32 (1%) | 0.8461 |
| Native Hawaiian | 2 (0%) | 0 (0%) | 2 (0%) | 1.001 |
| Unknown or Not Reported | 26 (1%) | 18 (1%) | 8 (1%) | |
| Ethnicity | ||||
| Not Hispanic or Latino | 4309 (96%) | 3040 (96%) | 1269 (96%) | 0.8011 |
| Marital Status | 0.6551 | |||
| Married | 3166 (71%) | 2223 (70%) | 943 (71%) | |
| SP relationship | 0.543 | |||
| Spouse | 2767 (62%) | 1948 (62%) | 819 (62%) | |
| Adult child | 526 (12%) | 236 (13%) | 360 (11%) | |
| Friend/ companion | 849 (19%) | 613 (19%) | 236 (18%) | |
| Living Situation of SP | ||||
| Living with Participant | 3019 (67%) | 2131 (67%) | 888(67%) | 0.889 |
| SP Gender | ||||
| F | 2687 (60%) | 1865 (59%) | 822 (62%) | 0.0491 |
| SP Age Median years | 68.00 | 68.00 | 69.00 | 0.071 |
1.
Fisher’s Exact test