Table 2.

Partial correlation of PTSD severity with fractional anisotropy in other probabilistic white matter tracts

Tract	CAPS score x LH FA			CAPS score x RH FA			CAPS score x Bilateral FA
	r	p	df	r	p	df	r	p	df
fmajor	–	–	–	–	–	–	–0.077	0.563	57
fminor	–	–	–	–	–	–	0.098	0.461	57
ATR	–0.037	0.778	57	–0.193	0.143	57	–	–	–
CST	0.047	0.722	57	0.061	0.646	57	–	–	–
ILF	0.097	0.465	57	0.001	0.996	57	–	–	–
SLFP	0.091	0.492	57	–0.028	0.834	57	–	–	–
SLFT	–0.092	0.490	57	0.075	0.571	57	–	–	–

FA, fractional anisotropy; LH, left hemisphere; RH, right hemisphere; CAPS, Clinician Administered PTSD Scale for DSM-IV; r, partial correlation controlling for age; sex, head motion, and antidepressant use; fmajor, corpus callosum forceps major; fminor, corpus callosum forceps minor; ATR, anterior thalamic radiations; CST, corticospinal tract; ILF, inferior longitudinal fasciculus; SLFP, superior longitudinal fasciculus parietal endings; SLFT, superior longitudinal fasciculus temporal endings. Bonferroni method was used to adjust alpha threshold for multiple comparison (0.05/12 = 0.004). No results were significant, before or after correction.