Table 3 Mean and standard deviation of volumes in each group in the CHOP sample, and Cohen’s d for the difference between groups. Note that groups are not matched for age, sex, and IQ, and that the Cohen’s d effect size estimate does not account for these factors
From: Evidence against the “normalization” prediction of the early brain overgrowth hypothesis of autism
| CHOP group means | |||
|---|---|---|---|
| ASD mean (SD) | TDC mean (SD) | Cohen’s d | |
| TBV | 1231.06 (117.58) | 1197.48 (115.7) | 0.29 |
| GMV | 749.45 (68.59) | 726.56 (69.86) | 0.33 |
| WMV | 482.64 (60.58) | 471.94 (58.46) | 0.18 |
| Cortical GMV | 567.24 (58.52) | 549.15 (59.31) | 0.31 |
| Cortical WMV | 450.07 (57.18) | 439.86 (55.38) | 0.18 |
| Cerebellum | 148.65 (15.14) | 144.29 (13.86) | 0.3 |
| Cerebellar GMV | 116.07 (11.96) | 112.22 (10.99) | 0.34 |
| Cerebellar WMV | 32.57 (5.07) | 32.07 (5.03) | 0.1 |
| Lateral ventricles | 11.39 (7.03) | 9.88 (5.76) | 0.23 |
| Third ventricle | 0.81 (0.28) | 0.73 (0.27) | 0.3 |