Table 1.
Subjects' information across groups
| ADNI |
NKI |
|||||
|---|---|---|---|---|---|---|
| Control (n = 39) | Alzheimer's disease (mild dementia) (n = 39) | P value | NKI-I (n = 26) | NKI-II (n = 26) | P value | |
| Age∗ | 74.19 ± 6.29 | 74.45 ± 8.57 | .88 | 60.54 ± 11.01 | 60.46 ± 9.98 | .979 |
| Sex† | 20 M/19 F | 20 M/19 F | 1 | 13 M/13 F | 13 M/13 F | 1 |
| Education∗ | 16.38 ± 2.75 | 15.10 ± 2.86 | .047 | - | - | - |
| MMSE∗ | 28.67 ± 1.42 | 22.10 ± 4.47 | 4.042 × 10−13 | - | - | - |
| SUVR∗ | 1.1 ± 0.14 | 1.38 ± 0.19 | 5.44 × 10−10 | - | - | - |
| SUVR+/− | 8+/29− | 33+/4− | - | - | - | - |
Abbreviations: ADNI, Alzheimer's Disease Neuroimaging Initiative; MMSE, Mini-Mental State Examination; NKI, Nathan Kline Institute-Rockland Sample; SD, standard deviation; SUVR, standard uptake value ratio; SUVR+/−, amyloid-positive or amyloid-negative confirmed participants.
NOTE. Education and MMSE variables were not available for NKI data set.
∗
Values represent mean ± SD. The group difference was evaluated using a two-sample t-test (two-tailed).
†
Group difference evaluated using a χ2 test (two-tailed).