Table 3.

Other MRI Studies of Hippocampus in PTSD

Trauma/Publications	Combat Bremner	Combat Gurvitz	Sex Abuse Bremner	Sex Abuse Stein
(PTSD/Control)	(22/26)	(7/7)	(17/17)	(21/21)
PTSD:
Right	1184 ± 142	3200 ± 600	1062 ± 169	2099 ± 165
Left	1186 ± 138	3200 ± 600	1050 ± 152	2192 ± 177
Control:
Right	1286 ± 175	4100 ± 400	1116 ± 190	2160 ± 210
Left	1233 ± 163	4300 ± 300	1193 ± 134	2307 ± 193
Differencea and Significance
Right	−8; p ± .03	−22; p ± .001	−4; p ± .4	−3; ns
Left	−4; p ± .28	−26; p ± .001	−12; p ± .008	−5; p < .05
Effect Sizeb
Right	.64	1.8	.3	.33
Left	.31	2.4	1.0	.62

MRI, magnetic resonance imaging; PTSD, posttraumatic stress disorder.

^aIn percentage compared to controls.

^bSee Table 2 for definition.