Control | Patients with TBI | P value | |
N | 36 | 83 | |
Age | 59.11 (3.89) | 58.13 (2.94) | 0.182 |
Education | 15.40 (2.43) | 14.76 (2.34) | 0.186 |
Race | White: n=34 (94.4%); black: n=2 | White: n=77 (92.8%); black n=4 (4.8%); Asian: n=1 (1.2%); Amer Ind: n=1 (1.2%) | |
Ethnicity | Non-hisp: n=34 (94.4%) | Non-hisp: n=78 (94.0%) | |
MMSE Total | 29.59 (.62) | 28.33 (2.29) | 0.00001* |
WAIS FIQ | 111.51 (11.69) | 103.24 (14.80) | 0.0016* |
WAIS PIQ | 110.43 (12.26) | 100.93 (16.22) | 0.00007* |
WAIS VIQ | 110.69 (11.32) | 104.53 (14.82) | 0.0154 |
AFQT before injury | 71.21 (18.22) | 63.68 (23.69) | 0.063 |
AFQT after injury or after service | 72.63 (19.32) | 64.26 (26.10) | 0.055 |
HAM-A total | 4.09 (4.31) | 2.72 (3.69) | 0.102 |
BDI total | 11.61 (9.97) | 9.43 (9.03) | 0.264 |
Obsessions | 4.41 (5.12) | 5.35 (5.13) | 0.361 |
Compulsions | 13.33 (8.65) | 14.01 (9.17) | 0.700 |
Tics | 1.36 (2.38) | 2.28 (2.45) | 0.059 |
Mean diff obsessions | 0.10 (0.32) | 0.10 (0.21) | 1.0 |
Mean diff compulsions | 0.18 (0.55) | 0.22 (0.39) | 0.694 |
Mean diff tics | 0.07 (0.18) | 0.13 (0.18) | 0.099 |
P Value=unadjusted p value, with significance indicated by * for false discovery rate corrected p<0.05.
Numbers are reported as means with SD in parentheses except for Race and Ethnicity where number of subjects is reported and percentage of patients is reported in parentheses. ‘Obsessions’, ‘compulsions’, and ‘Tics’ refer to the mean score on the Y-BOCS and YGTSS Symptom Checklists (see Methods section for details of the measures). ‘Mean diff obsessions’, ‘mean diff compulsions’, and ‘mean diff tics’ refer to the mean difference between precompulsion and post compulsion, obsession, and tic score respectively (see Methods section for details of the measures).
n, number of subjects; MMSE, Folstein Mini-Mental State Examination; WAIS, Wechsler Adult Intelligence Scale; VIQ, Verbal IQ score; PIQ, performance IQ score; FIQ, Full Scale IQ score; AFQT, Armed Forces Qualification Test; BDI, Beck Depression Inventory II total score; HAM-A, Hamilton Anxiety Scale Total score