Table 1.
Demographics
| Center | Group | Number (M/F) | Age at PET scan (years) | Symptom duration (years) |
|---|---|---|---|---|
| A | Training | |||
| NL | 10 (8/2) | 71.3 ± 6.5 | - | |
| bvFTD | 10 (8/2) | 72.1 ± 9.7 | 3 ± 1.9 | |
| Testing | ||||
| NL | 15 (5/10) | 68.7 ± 6.3 | - | |
| bvFTD | 15 (8/7) | 69.7 ± 11.2 | 3.1 ± 1.7 | |
| AD | 10 (6/4) | 70.2 ± 5.8 | 3.2 ± 2.2 | |
| B | Training | |||
| NL∗ | 15 (7/8) | 61.8 ± 9.1 | - | |
| bvFTD | 7 (7/0) | 60.1 ± 12.1 | 4.1 ± 4.4 | |
| Testing | ||||
| bvFTD | 37 (28/9) | 63.7 ± 8.9 | 3.5 ± 2.8 | |
| SD | 17 (11/6) | 65.5 ± 4.3 | 3.8 ± 2.1 | |
| PNFA | 12 (6/6) | 70.2 ± 8.9 | 3.5 ± 1.8 | |
| ADNI | Testing | |||
| NL | 40 (23/17) | 75.8 ± 4.64 | - | |
| AD | 40 (23/17) | 75.7 ± 5.76 | 4.4 ± 2.6 |
Abbreviations: AD, Alzheimer's disease; ADNI, Alzheimer's Disease Neuroimaging Initiative; bvFTD, behavioral variant frontotemporal dementia; NL, healthy controls; PNFA, progressive nonfluent aphasia; SD, semantic dementia.
NOTE. Data are mean ± standard deviation.
∗
NL group from Center-B was used both in training and testing analysis.