Table 1.
Descriptive statistics of study variables.
| n | Units | Mean (SD) | Max | |
|---|---|---|---|---|
| Age | 90 | years | 73.10 (.40) | |
| MMSE | 90 | 28.54 (1.51) | 30 | |
| HADS total | 90 | 6.71 (4.39) | 32 | |
| Logical Memory I | 90 | 44.37 (11.43) | 75 | |
| Logical Memory II | 90 | 27.62 (8.82) | 50 | |
| VPA I | 89 | 19.88 (7.76) | 32 | |
| VPA II | 89 | 6.09 (2.26) | 8 | |
| ICV | 90 | mm3 | 1,545,481 (113,685) | |
| L Hippocampus | 89 | mm3 | 3079 (392) | |
| R Hippocampus | 89 | mm3 | 3376 (412) | |
| L DLPFC | 88 | mm3 | 25,064 (5644) | |
| R DLPFC | 88 | mm3 | 24,477 (5410) | |
| L IFG | 88 | mm3 | 16,238 (2946) | |
| R IFG | 88 | mm3 | 15,715 (3110) | |
| Genu FA | 85 | .40 (.05) | 1 | |
| Genu MD | 85 | ×10−6 mm2/sec | 789.18 (79.14) | |
| Splenium FA | 88 | .49 (.07) | 1 | |
| Splenium MD | 88 | ×10−6 mm2/sec | 979.63 (183.73) |
MMSE: mini-mental state exam; ICV: intracranial volume; L: left; R: right; DLPFC: dorsolateral prefrontal cortex, IFG: inferior frontal gyrus; FA: fractional anisotropy; MD: mean diffusivity.