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Demographics of the AD sample.
| Diagnosis | No. of subjects (male : female) | Age at sampling (years ± SD) | Age at onset (years ± SD) | Disease duration (years ± SD) | MMSE score at sampling (mean ± SD) |
|---|---|---|---|---|---|
| AD | 235 (74 : 161) | 78.6 ± 9.8 | 77.2 ± 8.0 | 4.1 ± 1.8 | 18.7 ± 5.8 |
| CNTR | 207 (69 : 138) | 77.0 ± 9.3 | NA | NA | 28.2 ± 2.6** |
AD: sporadic Alzheimer's disease;
CNTR: controls;
MMSE: Minimental State Examination;
SD: standard deviation;
NA: not applicable;
**P < .001, Student's t-test versus AD.
