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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
TBV1231.06 (117.58)1197.48 (115.7)0.29
GMV749.45 (68.59)726.56 (69.86)0.33
WMV482.64 (60.58)471.94 (58.46)0.18
Cortical GMV567.24 (58.52)549.15 (59.31)0.31
Cortical WMV450.07 (57.18)439.86 (55.38)0.18
Cerebellum148.65 (15.14)144.29 (13.86)0.3
Cerebellar GMV116.07 (11.96)112.22 (10.99)0.34
Cerebellar WMV32.57 (5.07)32.07 (5.03)0.1
Lateral ventricles11.39 (7.03)9.88 (5.76)0.23
Third ventricle0.81 (0.28)0.73 (0.27)0.3