Table 2.
Absolute and Relative Volumes of Regions of Interest of Heschl Gyrus and Planum Temporale*
| Absolute Volume, mL (Relative Volume, %) |
||||||
|---|---|---|---|---|---|---|
| Region | Patients With Schizophrenia (n = 20) | Patients With Mania (n = 24) | Healthy Subjects (n = 22) | df | F | P |
| Total ICC | 1512 ± 97 | 1454 ± 140 | 1546 ± 161 | 2, 61 | 2.63 | .08 |
| Left planum temporale | 1.88 ± 0.39† | 2.23 ± 0.55 | 2.40 ± 0.63 | 2, 60 | 4.20 | .02 |
| (0.09 ± 0.02) | (0.16 ± 0.04) | (0.16 ± 0.03) | 2, 61 | 4.76 | .01 | |
| Right planum temporale | 2.01 ± 0.48 | 1.80 ± 0.46 | 1.88 ± 0.48 | 2, 60 | 1.21 | .30 |
| (0.13 ± 0.03) | (0.13 ± 0.04) | (0.12 ± 0.03) | 2, 61 | 0.98 | .38 | |
| Left Heschl gyrus | 1.42 ± 0.28 | 1.68 ± 0.38 | 1.73 ± 0.46 | 2, 60 | 1.96 | .15 |
| (0.09 ± 0.02) | (0.12 ± 0.02) | (0.11 ± 0.02) | 2, 61 | 2.11 | .13 | |
| Right Heschl gyrus | 1.28 ± 0.32 | 1.43 ± 0.29 | 1.44 ± 0.46 | 2, 60 | 2.07 | .14 |
| (0.08 ± 0.02) | (0.10 ± 0.02) | (0.09 ± 0.03) | 2, 61 | 2.49 | .09 | |
*
Data are given as mean ± SD. Statistical significance levels are based on 1-factor analysis of covariance (ANCOVA). The df of ANCOVA varies because there are 2 covariates for intracranial contents (ICC) (age and parental socioeconomic status) and 3 covariates for absolute volumes (ICC, age, and parental socioeconomic status). The text uses relative volumes for statistical significance measures, but absolute volumes are also presented here for comparison purposes.
†
Post hoc Tukey Honestly Significant Difference tests indicated that patients with schizophrenia were significantly different from patients with mania and comparison subjects.