Table 2.

Means of neural measures possibly related with TBI observed for sample, including SD, n and significances.

Neural measures	Non-blast mean (SD, n)	Blast mean (SD, n)	p-value
Subjects with contusions	0% (N/A, 37)	0% (N/A, 39)	>0.1
Subjects with microbleeds	2.7% (N/A, 37)	2.6% (N/A, 39)	>0.1
Microbleeds per subject	0.1 (0.8, 37)	0.03 (0.2, 39)	>0.1
Whole brain cortical thickness	2.46 (0.08, 41)	2.43 (0.09, 41)	=0.08

Neural measures apart from the QDEC analysis were contusions, microbleeds, and whole brain cortical thickness. The p-value column used the chi-squared test for subjects with contusions and subjects with microbleeds (seen in first two rows) that were percentages of n. The remaining two significances were calculated using the two-sample t-test. From our pmTBI population the whole brain cortical thickness difference between the blast and non-blast groups trended toward significance. The remaining effects were less significant. The row with “microbleeds per subject” represented the average number of microbleeds per subject. The microbleeds and contusions were counted by radiologists. The standard deviations and number of subjects are in parentheses.

Legend: SD, standard deviation; n, number of subjects; N/A, not applicable.