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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: Neurobiol Aging. 2010 Apr 3;33(1):21–34. doi: 10.1016/j.neurobiolaging.2010.02.009

Table 4.

Regression coefficients for final model, along with 95% confidence intervals (CI) and significance

Paths Standardized regression coefficient p Value* 95% CI p Value*
Age → IFOF FA −.57 <0.001 −.421 to −.707 0.001
Age → ILF FA −.56 <0.001 −.343 to −.735 0.001
Age → CC5 FA −.49 <0.001 −.236 to −.677 0.001
IFOF FA → Visuospatial construction .37 0.007 .144–.548 0.001
ILF FA → Visuomotor Dexterity .38 0.005 .001–.604 0.050
CC5 FA → Memory/executive function .34 0.014 .082–.531 0.016

Key: CC5, occipital, parietal, and temporal fibers of corpus callosum; FA, fractional anisotropy; IFOF, inferior occipitofrontal fasciculus; ILF, inferior longitudinal fasciculus.

*

p Values of the 95% CI were derived by 2000 bootstrap replications.