Table 2.

Between-group differences in overall brain volume and gray matter volume

ASDControlt(38)p
ICV1.67 ± 0.18 × 1061.64 ± 0.21 × 106−0.63<0.60
Total brain volume9.74 ± 1.14 × 1059.69 ± 0.76 × 105−0.14<0.90
Total gm volume4.89 ± 0.56 × 1054.81 ± 0.41 × 105−0.58<0.60
gm volume right2.45 ± 0.28 × 1052.41 ± 0.20 × 105−0.53<0.60
gm volume left2.44 ± 0.28 × 1052.39 ± 0.21 × 105−0.62<0.60
  • Data are expressed as mean ± SD. ICV, Total intracranial volume; gm, gray matter; all measures are in cubic millimeters.