Table 2. Amyloid Positivity Differences Between 1:1 Matched Participants.
| Amyloid PET scan result | Matched participants, No. (%) | |||||
|---|---|---|---|---|---|---|
| Asian | White | Black | White | Hispanic | White | |
| No. | 313 | 313 | 615 | 615 | 780 | 780 |
| MCI and dementia | ||||||
| Positive, No. (%) [95% CI] | 142 (45.4) [39.9-50.9] | 181 (57.8) [52.3-63.2] | 333 (54.1) [50.2-58.0] | 359 (58.4) [54.4-62.2] | 425 (54.5) [51.0-58.0] | 482 (61.8) [58.3-65.1] |
| Negative | 171 (54.6) | 132 (42.2) | 282 (45.9) | 256 (41.6) | 355 (45.5) | 298 (38.2) |
| MCI | ||||||
| Positive | 61 (36.3) | 89 (53.0) | 128 (42.4) | 149 (49.3) | 164 (46.1) | 190 (53.4) |
| Negative | 107 (63.7) | 79 (47.0) | 174 (57.6) | 153 (50.7) | 192 (53.9) | 166 (46.6) |
| Dementia | ||||||
| Positive | 81 (55.9) | 92 (63.4) | 205 (65.5) | 210 (67.1) | 261 (61.6) | 292 (68.9) |
| Negative | 64 (44.1) | 53 (36.6) | 108 (34.5) | 103 (32.9) | 163 (38.4) | 132 (31.1) |
Abbreviations: MCI, mild cognitive impairment; PET, positron emission tomography.