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| Variable | MCI | AD | NC |
|---|---|---|---|
| Number | 396 | 327 | 416 |
| Sex (F/M) | 144/252 | 156/171 | 213/203 |
| Age | 74.7±7.5 | 75.0±7.9 | 74.6±5.8 |
| Education | 15.7±3.0 | 15.1±3.0 | 16.3±2.7 |
| MMSE | 27.0±1.8 | 23.2±2.1 | 29.1±1.1 |
Age, education and MMSE are defined as mean ± standard deviation. MMSE, mini-mental state examination; ADNI, Alzheimer’s Disease Neuroimaging Initiative; MCI, mild cognitive impairment; NC, normal control; AD, Alzheimer’s disease.
