Table 1.
Demographic characteristics by cognitive class
| Variable | Lower Cognitive Class (n=56) |
Higher Cognitive Class (n=65) |
|||||
|---|---|---|---|---|---|---|---|
| Mean | SD | Range | Mean | SD | Range | t (p-value) | |
| Gender | −1.53 (.129) | ||||||
| Male | 39.3% | 26.2% | |||||
| Female | 60.7% | 73.8% | |||||
| Age | 70.91 | 5.06 | 65-87 | 70.94 | 5.57 | 65-91 | −.028 (.977) |
| Years of Education | 16.14 | 1.79 | 12-20 | 16.37 | 2.09 | 12-20 | −.633 (.528) |
| MMSE | 28.75 | 1.08 | 26-30 | 29.35 | 0.89 | 27-30 | −3.36 (.001) |
| HDRS-17 | 18.82 | 2.68 | 15-27 | 17.71 | 2.35 | 15-28 | 2.43 (.016) |
| Amyloid positive | (n=49 with a:myloid data) 16.1% |
(n=49with amyloid data) 12.3% |
.264 (.792) | ||||
| APOE e4 carrier | 23.2% | 9.2% | 2.07 (.041) | ||||