Table 4.
Results of mediation analyses across all pathways
| Path | β | (SE) | 95% CI | R2 | ||
|---|---|---|---|---|---|---|
| LL | UL | |||||
| c | GCS → LDFR | .21 | (.21) | −.19 | .62 | .05 |
| Corpus Callosum | ||||||
| a | GCS → FA | .45 | (.16)* | .13 | .77 | .20 |
| b | FA → LDFR | .71 | (.14)*** | .43 | .99 | .40 |
| c’ | GCS → LDFR | −.11 | (.18) | −.46 | .25 | .01 |
| ab | GCS → FA → LDFR | .32 | (.13)** | .12 | .56 | .01 |
| Fornix | ||||||
| a | GCS → FA | .54 | (.15)*** | .25 | .83 | .29 |
| b | FA → LDFR | .37 | (.23) | −.09 | .82 | .10 |
| c’ | GCS → LDFR | .01 | (.25) | −.47 | .50 | .00 |
| ab | GCS → FA → LDFR | .20 | (.14) | −.01 | .45 | .03 |
| Right Cingulum Bundle | ||||||
| a | GCS → FA | .35 | (.19) | −.02 | .71 | .12 |
| b | FA → LDFR | .26 | (.21) | −.16 | .68 | .06 |
| c’ | GCS → LDFR | .12 | (.22) | −.31 | .55 | .01 |
| ab | GCS → FA → LDFR | .09 | (.10) | −.03 | .27 | .01 |
| Left Cingulum Bundle | ||||||
| a | GCS → FA | .40 | (.17)* | .06 | .75 | .16 |
| b | FA → LDFR | .37 | (.21) | −.03 | .78 | .12 |
| c’ | GCS → LDFR | .06 | (.22) | −.36 | .49 | .00 |
| ab | GCS → FA → LDFR | .15 | (.11) | .00 | .36 | .02 |
| Right Perforant Pathway | ||||||
| a | GCS → FA | .47 | (.16)** | .15 | .78 | .22 |
| b | FA → LDFR | .26 | (.23) | −.19 | .71 | .05 |
| c’ | GCS → LDFR | .09 | (.23) | −.37 | .55 | .01 |
| ab | GCS → FA → LDFR | .12 | (.12) | −.05 | .34 | .01 |
| Left Perforant Pathway | ||||||
| a | GCS → FA | .48 | (.16)** | .17 | .79 | .23 |
| b | FA → LDFR | .71 | (.15)*** | .42 | 1.00 | .39 |
| c’ | GCS → LDFR | −.13 | (.19) | −.49 | .24 | .01 |
| ab | GCS → FA → LDFR | .34 | (.13)** | .14 | .58 | .09 |
| Right Uncinate Fasciculus | ||||||
| a | GCS → FA | .51 | (.16)*** | .20 | .81 | .26 |
| b | FA → LDFR | .09 | (.26) | −.41 | .59 | .01 |
| c’ | GCS → LDFR | .07 | (.26) | −.44 | .57 | .00 |
| ab | GCS → FA → LDFR | .05 | (.14) | −.17 | .28 | .00 |
| Left Uncinate Fasciculus | ||||||
| a | GCS → FA | .62 | (.14)*** | .34 | .89 | .38 |
| b | FA → LDFR | .77 | (.20)*** | .38 | 1.15 | .37 |
| c’ | GCS → LDFR | −.31 | (.24) | −.78 | .16 | .06 |
| ab | GCS → FA → LDFR | .47 | (.16)*** | .23 | .76 | .14 |
Note. c = total effect. c’ = direct effect. ab = indirect effect. GCS = Glasgow Coma Scale score. FA = fractional anisotropy. LDFR = total z-score on the long-delay free recall trial of the California Verbal Learning Test – Children’s version (Delis et al. 1994) Bold text indicates indirect effects where GCS predicts LDFR through suppression by FA
*
p < .05
**
p < .01
***
p < .05