Figure 2.

Longitudinal FA and volumetric abnormalities in concussive blast TBI compared with non-blast control. (A and B) Comparison of the number of abnormal FA regions by time point identified significant differences in blast TBI at the sub-acute and 5-year, but not 1-year, evaluations compared with non-blast controls. (C and D) In contrast, there were no significant differences in the number of abnormal volumetric regions at any time point comparing the two groups. P-values reported are adjusted for age, education, gender and scanner at each time point. Subsequent head injury exposure was also collected at the 5-year evaluation and included with the other covariates for Scan 3 statistical adjustment to determine significance. Asterisk indicates P-values that remained significant after Benjamini–Hochberg correction for multiple comparisons.