Assessment of discriminatory ability.

Note- Mean number of abnormal voxels and SD (in parentheses) detected by each analysis method from each group for each global metric (1) “All” - all abnormal white matter voxels across the whole brain, (2) “Low” - all white matter voxels where FA was significantly higher than normal and (3) “High” - all white matter voxels. Two-group t-test and Wilcox-Mann-Whitney test was conducted for each global metric to compare the numbers of abnormal voxels between normal subjects and mTBI patients.