Table 2. DTI tractography (n = 19).
DemographicsMean (SD), range
  Age (years)33.2 (7.7), 22–52
  Education (years)14.6 (1.6), 12–18
  Race, nonwhite, n (%)5 (26.3%)
  APOE-ε4 positive (%)6 (33.3%)
Blast exposures
  Number of blast-related mild TBIs
during military service (lifetime)
27.1 (28.3), 3–102 Median = 15
  Number of lifetime mild TBIs with
loss of consciousness
2.6 (2.7), 0–11 Median = 2
  Time since last blast-related mild
TBI (years)
5.7 (2.2), 1–8 Median = 6
Behavioral and neurological measures
  CAPS score64.1 (28.7), 13–111
  PHQ-9 score10.6 (7.9), 0–25
  PSQI score10.5 (4.3), 3–17
  AUDIT-C score3.4 (2.3), 0–9
  NSItotal score29.5 (13.4), 4–57