Table 1.
Univariate Results from MANCOVA Test to Assess Variability Attributable to Age, Sex, and Brain Volume
| df | Sum sq | Mean sq | F statistic | η2 | |
|---|---|---|---|---|---|
| Frontal | |||||
| Age | 1 | 0.37174 | 0.37174 | 13.7338 | 0.30632442 |
| Sex | 1 | 0.02775 | 0.02775 | 1.0252 | 0.0228668 |
| Brain vol | 1 | 0.00204 | 0.00204 | 0.0756 | 0.00168102 |
| Residuals | 30 | 0.81202 | 0.02707 | ||
| Temporal | |||||
| Age | 1 | 0.27837 | 0.278374 | 17.8413 | 0.37158609 |
| Sex | 1 | 0.00245 | 0.00245 | 0.157 | 0.00327042 |
| Brain vol | 1 | 0.00024 | 0.000242 | 0.0155 | 0.00032037 |
| Residuals | 30 | 0.46808 | 0.015603 | ||
| Parietal | |||||
| Age | 1 | 0.15166 | 0.151659 | 7.5828 | 0.2017265 |
| Sex | 1 | 0.00006 | 0.000056 | 0.0028 | 7.98E-05 |
| Brain vol | 1 | 0.00008 | 0.000083 | 0.0042 | 0.00010641 |
| Residuals | 30 | 0.60001 | 0.02 | ||
| Occipital | |||||
| Age | 1 | 0.57963 | 0.57963 | 33.9775 | 0.50018553 |
| Sex | 1 | 0.01966 | 0.01966 | 1.1522 | 0.01696539 |
| Brain vol | 1 | 0.04776 | 0.04776 | 2.7999 | 0.04121398 |
| Residuals | 30 | 0.51178 | 0.01706 | ||
| Cingulate | |||||
| Age | 1 | 0.64805 | 0.64805 | 10.7218 | 0.25127664 |
| Sex | 1 | 0.00488 | 0.00488 | 0.0807 | 0.00189218 |
| Brain vol | 1 | 0.11283 | 0.11283 | 1.8667 | 0.04374901 |
| Residuals | 30 | 1.81327 | 0.06044 | ||
| Insula | |||||
| Age | 1 | 1.30516 | 1.30516 | 21.2218 | 0.38340486 |
| Sex | 1 | 0.22115 | 0.22115 | 3.5959 | 0.0649652 |
| Brain vol | 1 | 0.03279 | 0.03279 | 0.5331 | 0.00963242 |
| Residuals | 30 | 1.84503 | 0.0615 | ||
Brain vol, whole brain volume; df, degrees of freedom; sum sq, sum of squares; mean sq, mean square; η2, eta squared.