Table 3.
The results obtained from linear regression models examining the relationship between brain volumetry measures and TMT-B completion time with and without simple and complex processing speed.
| TMT-B |
+Simple |
+Complex |
||||
|---|---|---|---|---|---|---|
| β | p | β | p | β | p | |
| Intracranial volume (cm3) | −.024 | .539 | −.014 | .747 | .031 | .543 |
| Whole brain volume (cm3) | −.080 | .0001 | −.059 | .001 | −.022* | .302 |
| Grey matter volume (cm3) | −.139 | .0001 | −.099 | .002 | −.060 | .107 |
| NAWM volume (cm3) | −.075 | .003 | −.030 | .283 | .039* | .218 |
| WMH volume (cm3) | .132 | .010 | .029 | .611 | −.064* | .326 |
β = standardised regression coefficient; NAWM = normal-appearing white matter; WMH = white matter hyperintensity; Simple = Controlling for Simple Reaction Time and Inspection Time; Complex = Controlling for Symbol Search, Digit-Symbol, Simple and 4-Choice Reaction Time and Inspection Time; Bold = significant p-values after FDR correction based on the actual p-values produced; *standardized beta values significantly attenuated (p < .05).