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. Author manuscript; available in PMC: 2020 Mar 1.
Published in final edited form as: Biol Psychiatry. 2018 Jul 12;85(5):408–416. doi: 10.1016/j.biopsych.2018.06.024

Table 3.

Associations between white matter tract FA and ADHD symptoms

Interaction - TBI Interaction - TBI high risk Main Effect
t value p value t value p value t value ΔR2 p value
Corpus Callosum Genu −1.38 0.17 −2.83 0.005
Corpus Callosum Body −0.04 0.97 −1.43 0.15 0.98 −0.0005 0.33
Corpus Callosum Splenium −1.14 0.25 −1.98 0.05 1.12 0.0004 0.26
Anterior Corona
Radiata		 0.67 0.50 0.36 0.72 0.46 −0.001 0.64
Superior Corona Radiata 0.16 0.87 −1.08 0.28 0.05 −0.002 0.96
Posterior Corona
Radiata		 −0.52 0.61 −0.56 0.58 1.56 0.002 0.12

Interaction refers to the interaction between tract FA and TBI group on ADHD symptom severity score when examining all participants with mild TBI (TBI) as well as the subset at high risk for persistent deficits (TBI high risk). Where significant interactions were observed, the relationship between tract FA and symptoms was assessed in separate groups with and without a history of TBI. When the interaction was not significant the model was rerun without the interaction term to assess effect of tract FA on ADHD symptoms (Main Effect). Raw p values are reported; effects significant at a Bonferroni corrected p<0.05 are indicated in bold.