Table 6.
Model parameters for fixed effects when including level of general cognitive ability in the best fitting models for whole hippocampus and hippocampal subregion volumes.
| Region | B | P |
|---|---|---|
| Whole hippocampus | ||
| Intercept | 3924.655 | <.001 |
| Age | −3.352 | .984 |
| Age2 | −424.260 | <.001 |
| Age3 | 302.973 | .002 |
| Sex | 278.766 | <.001 |
| GCA | 4.165 | .082 |
| Age × GCA | −5.571 | .788 |
| Age2 × GCA | −25.242 | .077 |
| Age3 × GCA | −13.688 | .198 |
| Parasubiculum | ||
| Intercept | 61.129 | <.001 |
| Age | −35.298 | <.001 |
| Sex | 3.915 | .001 |
| GCA | 0.013 | .835 |
| Age × GCA | 0.250 | .711 |
| Presubiculum | ||
| Intercept | 319.470 | <.001 |
| Age | −135.823 | <.001 |
| Sex | 20.163 | <.001 |
| GCA | −0.057 | .827 |
| Age × GCA | 3.009 | .214 |
| Subiculum | ||
| Intercept | 467.638 | <.001 |
| Age | −11.672 | .662 |
| Age2 | −72.576 | <.001 |
| Age3 | 54.873 | <.001 |
| Sex | 33.274 | <.001 |
| GCA | 0.500 | .154 |
| Age × GCA | 1.539 | .635 |
| Age2 × GCA | −4.569 | .042 |
| Age3 × GCA | −2.734 | .103 |
| CA1 | ||
| ntercept | 713.034 | <.001 |
| Age | 163.514 | <.001 |
| Age2 | −162.828 | <.001 |
| Sex | 49.062 | <.001 |
| GCA | 0.830 | .122 |
| Age × GCA | 7.095 | .158 |
| Age2 × GCA | −4.528 | .189 |
| CA2/3 | ||
| Intercept | 245.720 | <.001 |
| Age | −83.888 | <.001 |
| Sex | 19.013 | <.001 |
| GCA | 0.568 | .004 |
| Age × GCA | 0.967 | .618 |
| CA4 | ||
| Intercept | 320.313 | <.001 |
| Age | −76.403 | <.001 |
| Sex | 19.165 | <.001 |
| GCA | 0.695 | .001 |
| Age × GCA | 0.602 | .787 |
| GC-DG | ||
| Intercept | 364.380 | <.001 |
| Age | −57.441 | .006 |
| Sex | 22.351 | <.001 |
| GCA | 0.513 | .037 |
| Age × GCA | 0.542 | .820 |
| ML | ||
| Intercept | 687.289 | <.001 |
| Age | −12.671 | .701 |
| Age2 | −78.680 | .001 |
| Age3 | 56.778 | .003 |
| Sex | 39.175 | <.001 |
| GCA | 0.754 | .094 |
| Age × GCA | 2.038 | .611 |
| Age2 × GCA | −6.937 | .012 |
| Age3 × GCA | −2.543 | .218 |
| Fimbria | ||
| Intercept | 114.412 | <.001 |
| Age | 86.443 | <.001 |
| Age2 | −50.670 | .003 |
| Sex | 14.347 | <.001 |
| GCA | −0.062 | .711 |
| Age × GCA | 3.458 | .176 |
| Age2 × GCA | −1.378 | .467 |
| Hippocampal fissure | ||
| Intercept | 217.184 | <.001 |
| GCA | −0.599 | .066 |
| HATA | ||
| Intercept | 61.972 | <.001 |
| Sex | 7.791 | <.001 |
| GCA | 0.002 | .960 |
| Hippocampal tail | ||
| Intercept | 569.507 | <.001 |
| Sex | 49.356 | <.001 |
| GCA | 0.551 | .256 |
Notes. GCA = general cognitive ability. Bold indicates p < .05.