Table 3.
Participant characteristics at time of enrollment by ethnocultural groups
| Total N=2,286 n (%) |
Latinx N=88 n (%) |
Non- Latinx Asian N=46 n (%) |
Non- Latinx Black N=114 n (%) |
Non- Latinx White N=2,003 n (%) |
Others N=35 n (%) |
p | |
|---|---|---|---|---|---|---|---|
| Age in years * | 73.21 (7.22) | 70.23 (7.51) | 73.93 (8.06) | 71.45 (7.37) | 73.46 (7.13) | 71.13 (7.40) | <.001† |
| Sex at birth | <.001‡ | ||||||
| Male | 1214 (53%) | 36 (41%) | 24 (52%) | 41 (36%) | 1101 (55%) | 12 (34%) | |
| Female | 1072 (47%) | 52 (59%) | 22 (48%) | 73 (64%) | 902 (45%) | 23 (66%) | |
| Education * | 16.05 (2.76) | 15.25 (3.25) | 17.26 (2.14) | 15.17 (2.94) | 16.09 (2.72) | 16.51 (2.80) | <.001† |
| Education attainment group | .013‡ | ||||||
| ≤12 years | 339 (15%) | 17 (19%) | 1 (2%) | 24 (21%) | 292 (15%) | 5 (14%) | |
| >12 years | 1947 (85%) | 71 (81%) | 45 (98%) | 90 (79%) | 1711 (85%) | 30 (86%) | |
| Diagnosis group | .033‡ | ||||||
| Cognitively unimpaired | 831 (36%) | 35 (40%) | 19 (41%) | 58 (51%) | 707 (35%) | 12 (34%) | |
| Mild cognitive impairment | 1056 (46%) | 39 (44%) | 17 (37%) | 39 (34%) | 944 (47%) | 17 (49%) | |
| Alzheimer’s disease | 399 (17%) | 14 (16%) | 10 (22%) | 17 (15%) | 352 (18%) | 6 (17%) | |
| Family history of AD/dementia | .427‡ | ||||||
| No | 833 (41%) | 27 (36%) | 17 (42%) | 44 (48%) | 731 (41%) | 14 (45%) | |
| Yes | 1198 (59%) | 49 (64%) | 23 (57%) | 48 (52%) | 1061 (59%) | 17 (55%) | |
| Original ADNI cohort | .005‡ | ||||||
| ADNI-1 | 819 (36%) | 19 (22%) | 14 (30%) | 38 (33%) | 740 (37%) | 8 (23%) | |
| ADNI-GO | 131 (6%) | 8 (9%) | 1 (2%) | 4 (4%) | 113 (6%) | 5 (14%) | |
| ADNI-2 | 790 (35%) | 31 (35%) | 14 (30%) | 34 (30%) | 696 (35%) | 15 (43%) | |
| ADNI-3 | 546 (24%) | 30 (34%) | 17 (37%) | 38 (33%) | 454 (23%) | 7 (20%) | |
| Amyloid | |||||||
| Abeta+ | 372 (21%) | 24 (34%) | 12 (38%) | 21 (25%) | 312 (20%) | 3 (11%) | .002‡ |
| Abeta− | 1425 (79%) | 47 (66%) | 20 (62%) | 64 (75%) | 1270 (80%) | 24 (89%) |
Note.
*
Mean (standard deviation) for continuous variables. N is the number of non-missing values.
P-values are derived from tests excluding the Others ethnocultural level.
Tests used:
†
Wilcoxon test
‡
Pearson test