Table 5.
Sex differences in brain volume and MMSE, controlling for age, education, and depression.
| Male | Female | Statistics | ||||||
|---|---|---|---|---|---|---|---|---|
| M (SD) | M (SD) | Pillai’s T | df | F | P | η 2 | Observed Power | |
| Main Effect | ||||||||
| Gender | 0.33 | 6, 77 | 6.37 | 0.0001 | 0.33 | 1.00 | ||
| Covariates | ||||||||
| Age | 0.48 | 6, 77 | 11.70 | 0.0001 | 0.48 | 1.00 | ||
| Education | 0.11 | 6, 77 | 1.53 | 0.180 | 0.11 | 0.56 | ||
| Depression | 0.15 | 6, 77 | 2.25 | 0.047 | 0.15 | 0.76 | ||
| Dependent Variables | ||||||||
| TBV | 1,351.55 (154.28) | 1,235.78 (88.35) | 1, 82 | 17.39 | 0.0001 | 0.18 | 0.99 | |
| GM | 502.77 (94.68) | 489.23 (59.68) | 1, 82 | 4.67 | 0.034 | 0.05 | 0.57 | |
| WM | 416.79 (98.53) | 416.04 (42.86) | 1, 82 | 0.45 | 0.502 | 0.01 | 0.10 | |
| CSF | 423.06 (80.54) | 324.14 (60.13) | 1, 82 | 24.42 | 0.0001 | 0.23 | 1.00 | |
| VBR | 47.24 (12.34) | 36.25 (8.04) | 1, 82 | 12.45 | 0.001 | 0.13 | 0.94 | |
| MMSE | 27.08 (1.72) | 27.32 (1.81) | 1, 82 | 0.54 | 0.464 | 0.01 | 0.11 | |
TBV, total brain volume.