Table 2.
Hierarchical linear regression showing the increase in verbal memory score variance accounted for by brain imaging variables.
| Covariates (Immediate Recall) | β1 | β2 | β3 | F | df | R2 | p |
|---|---|---|---|---|---|---|---|
| +Splenium_FA | .28 | 7.20 | 1, 84 | .08 | .009 | ||
| +Splenium_FA + Right Hippocampus | .25 | .29 | 6.37 | 2, 82 | .13 | .003 | |
| +Splenium_FA + Right Hippocampus + Left DLPFC | .25 | .28 | .11 | 5.16 | 3, 79 | .16 | .003 |
| Covariates (Delayed Recall) | β1 | β2 | β3 | F | df | R2 | p |
|---|---|---|---|---|---|---|---|
| +Splenium_FA | .32 | 7.56 | 1, 84 | .10 | .003 | ||
| +Splenium_FA + Right Hippocampus | .29 | .27 | 7.01 | 2, 82 | .15 | .001 | |
| +Splenium_FA + Right Hippocampus + Left DLPFC | .30 | .26 | .15 | 6.22 | 3, 79 | .19 | .0008 |
FA: fractional anisotropy; DLPFC: dorsolateral prefrontal cortex. Hippocampal and DLPFC are volumes (mm3) controlled for intracranial volume.