Skip to main content

Table 2 Step 1 of hierarchical regression models in TILDA

From: Verbal intelligence is a more robust cross-sectional measure of cognitive reserve than level of education in healthy older adults

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****
  1. Verb Flu verbal fluency, Proc Speed processing speed, Exec Func executive function, Epi Mem episodic memory, Glob Cog global cognition
  2. *p < .05, **p < .01, ***p < .001, ****p < .0001