Table 1.

Clusters significantly correlating with cortical thickness

Region	Side	Coordinates	Cluster Size (mm3)	Z values (peak)	Corrected p
CAPS Effects (negative)
Superior frontal	L	−7, 49, 34	6847	− 6.5	< 0.001
Isthmus of cingulate	L		1410	− 5.9
		−9, −48, 28			< 0.001
Insula	L		1315	− 3.5
		−30, 12, 6			< 0.001
Superior frontal	R	13, 46, 34	1183	− 3.6
					< 0.001
Postcentral	L		867	− 4.4
		−14, −31, 71			< 0.001
Caudal middle frontal	L		857	− 4.0
		−25, −3, 41			< 0.001
Superior Parietal	L		652	− 3.8
		−32, −47, 33			0.001
Lateral orbitofrontal	R	42, 25, −12	626	− 3.5
					0.002
Posterior cingulate	R	5, 7, 35	603	− 4.2
					0.002
Lateral occipital	R	25, −83, 19	602	− 4.0
					0.003
Lateral occipital	R	20, −84, −1	511	− 2.8
					0.009
CES Effects (negative)
Rostral middle frontal	L	30, 36, 19	813	− 3.9	< 0.001
Diagnosis (PTSD vs. CC) * CES Interaction
Supramarginal	L	−46, −31, 18	1200	4.0	< 0.001
Cuneus	L		1147	4.9
		−11, −76, 29			< 0.001
Superior frontal	L		1080	4.4
		−8, 28, 51			< 0.001
Cuneus	R	5, −83, 21	865	3.6
					< 0.001
Paracentral	R	6, −10, 58	534	3.1
					0.007
Precentral	L		523	2.8
		−40, −10, 44			0.008
Paracentral	L		514	3.5
		−7, −27, 55			0.009

Abbreviations – CC: combat control; PTSD: posttraumatic stress disorder; PFC: prefrontal cortex; L: left; R: right; CAPS-IV: Clinician Administered PTSD Scale for the DSM-IV; CES: Combat Exposure Scale.