Table 1.
Demographic Information
| Characteristic | Group |
|||
|---|---|---|---|---|
| Control Subjects (n=353) |
Typical Amnestic AD (n=154) |
Behavioral Variant of FTD (n=84) |
PPA (n=108) |
|
| Age at onset, mean (SD), y | 69.4 (8.2)a | 71.2 (9.5) | 60.3 (9.2) | 62.9 (8.3) |
| Education, mean (SD), y | 15.8 (2.6) | 14.0 (3.0) | 14.9 (2.8) | 15.3 (2.8) |
| IQ, mean (SD)b | 112.1 (6.6) | 109.1 (8.3) | 111.9 (6.8) | 112.9 (6.5) |
| Sex, No. | ||||
| Female | 274 | 102 | 38 | 56 |
| Male | 79 | 52 | 46 | 52 |
Abbreviations: AD, Alzheimer disease; FTD, frontotemporal dementia; PPA, primary progressive aphasia.
a
Because there was no age at disease onset for the controls, the age at their first visit is provided.
b
The IQs were determined according to Barona et al.17