Table 2.
Correlations between age, MMSE, education, and volumetric indexes.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
|---|---|---|---|---|---|---|---|---|
| 1. Age | – | |||||||
| 2. BV | 0.01 | – | ||||||
| 3. GM | −0.42** (−0.45)** | 0.61** (0.59)* | – | |||||
| 4. WM | −0.24* | 0.53** | 0.10 | – | ||||
| 5. CSF | 0.58** | 0.56** | −0.03 | −0.12 | – | |||
| 6. VBR | 0.68** | 0.11 | −0.37** | −0.44** | 0.88** | – | ||
| 7. Education (n = 82)a | 0.26** | 0.16 | −0.08 | 0.05 | 0.29** | 0.25* | – | |
| 8. MMSE | −0.20* (−0.22)* | 0.18* | 0.33** (0.29)** | 0.08 | −0.07 | −0.19* | 0.13 | – |
| 9. GDS | −0.05 | −0.17 | −0.27** | −0.03 | −0.01 | 0.08 | −0.13 | −0.20* |
a = Pearson’s correlations included 82 participants excluding those who had less than five education years; *p < 0.05 (one-tailed); **p < 0.01 (one-tailed); (statistical significance for partial correlations controlling for GDS). BV, brain volume; GM, Gray matter; WM, white matter; CSF, cerebrospinal fluid; VBR, volume-to-brain ratio.