Table 3.

Group comparisons of tractography-derived values.

	Main effect of groupa	Post hoc comparisonsb
		TBI+ vs. controls	TBI+ vs. TBI−	TBI− vs. controls
Left uncinate fasciculus
FA	F = 6.10, p = 0.005	p = 0.003	ns	ns
Volume	F = 0.11, ns	ns	ns	ns
Right uncinate fasciculus
FA	F = 0.01, ns	ns	ns	ns
Volume	F = 8.71, p = 0.001	p < 0.001	ns	ns
Left arcuate fasciculus
FA	F = 4.28, p = 0.02	ns	p = 0.03	ns
Volume	F = 6.00, p = 0.005	p = 0.005	p = 0.06	ns
Right arcuate fasciculus
FA	F = 4.78, p = 0.01	p = 0.01	ns	ns
Volume	F = 0.51, ns	ns	ns	ns
Corpus callosum
FA	F = 1.40, ns	ns	ns	ns
Volume	F = 6.79, p = 0.003	p = 0.002	p = 0.055	ns

^aANOVAs for FA comparisons; ANCOVAs (with global white matter as a covariate) for volume comparisons.

^bBonferroni corrected; ns, not significant (p > 0.10).