Table 1

Absolute volumes (ml) of the three regions of interest*

RegionNormal (n=22)OCD (n=22)Schizophrenia (n=22)Fp
*Data are given as mean (SD). Statistical significance levels are based on one way ANCOVA.
†Post hoc tests indicated smaller left and right hippocampal volumes in both the schizophrenia and OCD groups than in the normal comparison group.
‡Post hoc tests indicated greater left amygdala volume in the OCD group than in the schizophrenia and comparison groups.
Hippocampus
    Left3.21 (0.33)2.98 (0.38)†2.87 (0.42)†6.92<0.01
    Right3.10 (0.31)2.90 (0.30)†2.85 (0.40)†6.29<0.01
Amygdala
    Left0.58 (0.14)0.71 (0.15)‡0.62 (0.11)4.170.02
    Right0.67 (0.16)0.79 (0.18)0.69 (0.102.330.11
Thalamus
    Left5.65 (0.56)5.92 (0.69)5.80 (0.70)0.110.89
    Right5.66 (0.64)5.90 (0.72)5.69 (0.53)0.250.77
Intracranial volume1354 (98)1420 (134)1386 (114)1.770.18