Table 2.
Step 1 of hierarchical regression models in TILDA
| Cognition | Model statistics | Brain structure | Sex | Age | |||
|---|---|---|---|---|---|---|---|
| n | R2 | f | Variable | β | β | β | |
| Verb Flu | 313 | .043 | 4.597** | Grey matter volume | .042 | −.030 | −.205** |
| Proc Speed | 313 | .129 | 15.320**** | .041 | .084 | −.360**** | |
| Exec Func | 311 | .143 | 17.070**** | .048 | .052 | −.383**** | |
| Epi Mem | 313 | .079 | 8.780**** | .021 | .352** | −.207** | |
| Glob Cog | 311 | .159 | 19.400**** | .048 | .217* | −.373**** | |
| Verb Flu | 313 | .042 | 4.475** | Hippocampal volume | −.005 | −.004 | −.229** |
| Proc Speed | 313 | .129 | 15.226**** | −.025 | .120 | −.394**** | |
| Exec Func | 311 | .143 | 17.010**** | −.041 | .101 | −.428**** | |
| Epi Mem | 313 | .080 | 8.902**** | .044 | .341** | −.195** | |
| Glob Cog | 311 | .158 | 19.171**** | .002 | .243* | −.396**** | |
| Verb Flu | 279 | .051 | 4.898** | Mean cortical thickness | .103 | .002 | −.192** |
| Proc Speed | 279 | .173 | 19.217**** | .122* | .042 | −.370**** | |
| Exec Func | 277 | .195 | 22.040**** | .090 | .065 | −.428**** | |
| Epi Mem | 279 | .091 | 9.202**** | −.036 | .414** | −.216*** | |
| Glob Cog | 277 | .195 | 22.105**** | .065 | .251* | −.391**** | |
Verb Flu verbal fluency, Proc Speed processing speed, Exec Func executive function, Epi Mem episodic memory, Glob Cog global cognition
*p < .05, **p < .01, ***p < .001, ****p < .0001