Table 2.
Loadings on significant cortical surface area MRI features and the mean surface area measurements for the two sub-groups.
| Regions for surface area | Loadings | Means of MRI features | |||
|---|---|---|---|---|---|
| Factor 1 | Factor2 | Sub- group 1 | Sub- group 2 | P.value | |
| caudal anterior cingulate | 0.690066 | 0 | 629.9434 | 736.5299 | 3.19E-08 |
| cuneus*** | 0 | 0.752737 | 1380.811 | 1486.142 | 0.004526 |
| fusiform | 0 | 0.256507 | 3002.906 | 3296.627 | 7.15E-05 |
| lateral occipital*** | 0 | 0.301753 | 4248.783 | 4621.978 | 0.00061 |
| lingual | 0 | 0.739706 | 2921.123 | 3119.03 | 0.005897 |
| medial orbitofrontal*** | 0.738162 | 0 | 1619.236 | 1836.642 | 4.14E-09 |
| middle temporal | 0.704947 | 0 | 2895.66 | 3302.149 | 1.35E-07 |
| Pericalcarine*** | 0 | 1.059257 | 1370.472 | 1426.627 | 0.173673 |
| posterior cingulate | 0.682551 | 0 | 1078.283 | 1232.478 | 1.35E-07 |
| superior frontal*** | 0.751127 | 0 | 6287.472 | 7069.604 | 3.92E-08 |
| superior parietal*** | 0 | 0.378261 | 4963.255 | 5503.701 | 3.52E-06 |
| superior temporal | 0.776636 | 0 | 3291.283 | 3715 | 2.81E-10 |
| temporal pole | 0 | 0.210258 | 422.1415 | 448.4478 | 0.001073 |
| Insula*** | 0.712146 | 0 | 1956.396 | 2188.194 | 1.14E-08 |
***
indicate brain regions for which surface area, cortical thickness, and volume measurements of that region all contributed to sub-classification.