Table 4.

Comparison of DTI measurements of FA in the control dataset (n = 1 subject, n = 9 DTI scans) and TBI dataset (n = 22 TBI patients, n = 11 acute scans, n = 11 subacute scans)

	Control DTI Scan #	Genu CC FA	Body CC FA	Splenium CC FA	ILF FA	CB FA
Session 1	1	0.81	0.65	0.82	0.55	0.65
Session 2	2	0.81	0.64	0.82	0.58	0.61
Session 3	3	0.80	0.62	0.82	0.55	0.58
Session 4	4	0.80	0.66	0.83	0.57	0.63
Session 5	5	0.81	0.67	0.82	0.56	0.65
	6	0.82	0.64	0.80	0.57	0.64
Session 6	7	0.80	0.66	0.80	0.58	0.69
	8	0.79	0.70	0.83	0.61	0.64
	9	0.80	0.65	0.82	0.57	0.61
Control Mean ± SD		0.80 +/− 0.01	0.65 +/− 0.02	0.82 +/− 0.01	0.57 +/− 0.02	0.63 +/− 0.03
Control CV		1.1 %	3.4 %	1.3 %	3.2 %	4.9 %
Control RDC		0.02	0.06	0.030	0.05	0.09
Patient Mean Difference Acute-to-Subacute FA [95 % CI]		−0.15 [−0.25, −0.04]	−0.08 [−0.20, 0.04]	−0.031 [−0.11, 0.05]	−0.06 [−0.10, 0.01]	−0.07 [−0.12, −0.02]

Abbreviations: CB cingulum bundle, CC corpus callosum, CV coefficient of variation, FA fractional anisotropy, ILF inferior longitudinal fasciculus, RDC reproducibility coefficient. Note that for the splenium of the CC, the RDC value and the patient mean difference between acute and subacute FA are shown with three decimal places to demonstrate that the latter value was larger in magnitude than the former