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. Author manuscript; available in PMC: 2010 Feb 1.
Published in final edited form as: Neuropsychologia. 2009 Jan 8;47(3):916–927. doi: 10.1016/j.neuropsychologia.2009.01.001

Table 4.

Follow-up univariate analyses for the effects of age on regional FA

ROI Slope FA units/year t p R2
CC genu −.001 −3.56 .0008 .20
CC splenium −.0009 −4.18 .0001 .26
IC anterior limb .0004 1.19 ns .03
IC genu .0004 < 1 ns .02
IC posterior limb −.0009 −4.16 .0001 .26
Frontal −.001 −5.26 <.00001 .36
Parietal −.001 −4.01 .0002 .24
Temporal −.0006 −2.01 .049 .08
Occipital −.002 −5.21 <.00001 .35

Note. CC = corpus callosum; IC = internal capsule. Slope is estimate of units of FA loss per year of calendar age. R2 = proportion of variance explained in regional FA by age.