Data set demographics for ADNI1 and ADNI2 cohorts*
| Parameter | ADNI1 (n = 669) | ADNI2 (n = 690) |
|---|---|---|
| Acquisition | Scanner: 1.5 T Voxel sizes: 1.2 mm × 1.25 mm × 1.25 mm | Scanner: 3.0 T Voxel sizes: 1.2 mm × 1 mm × 1 mm |
| Diagnosis, no. | Cognitively healthy: 198 Late mild cognitive impairment: 326 Alzheimer disease: 145 | Cognitively healthy: 179 Significant memory concern: 77 Early mild cognitive impairment: 162 Late mild cognitive impairment: 149 Alzheimer disease: 123 |
| Sex, no. | Male: 377 Female: 292 | Male: 361 Female: 329 |
| Age, yr | 75.0 ± 6.7 | 72.6 ± 7.2 |
| Education, yr | 15.5 ± 3.1 | 16.3 ± 2.6 |
| ADAS-13 score | 18.4 ± 9.2 (1.0, 54.7) | 16.1 ± 10.14 (1.0, 52.0) |
| MMSE score | 26.7 ± 2.7 (18.0, 30.0) | 27.5 ± 2.7 (19.0, 30.0) |
ADAS-13 = Alzheimer’s Disease Assessment Scale; MMSE = Mini Mental State Examination; SD = standard deviation.
↵* Findings are presented as mean ± SD (minimum, maximum) unless otherwise specified.