Table 3.
Group Means and Standard Deviations for Total Cerebral Volume, Total Gray Matter Volume, and Total White Matter Volume for Each Subgroup: Typically Developing (TD), ASD With Normal-Sized Brains (ASD-N), and ASD With Disproportionate Megalencephaly (ASD-DM)
| Time 1
|
Time 2
|
Time 3
|
|||||||
|---|---|---|---|---|---|---|---|---|---|
| TD | ASD-N | ASD-DM | TD | ASD-N | ASD-DM | TD | ASD-N | ASD-DM | |
| Total cerebral volume | 986.26 (76.89) |
1011.42 (75.20) |
1151.67 (81.59)*,** |
1028.56 (80.88) |
1056.10 (76.68) |
1208.02 (88.27)*,** |
1065.03 (81.20) |
1086.62 (72.36) |
1251.56 (82.06)*,** |
| Gray matter | 622.71 (45.11) |
634.46 (44.45) |
721.97 (44.85)*,** |
633.16 (48.57) |
648.08 (50.78) |
740.46 (47.35)*,** |
636.60 (49.88) |
655.52 (46.48) |
748.92 (40.74)*,** |
| White matter | 363.51 (34.13) |
376.95 (35.01) |
429.70 (39.74)*,** |
395.40 (40.51) |
408.02 (33.09) |
467.55 (49.52)*,** |
433.71 (47.18) |
431.10 (34.16) |
502.63 (48.44)*,** |
Note. Significant contrast between TD and ASD-DM
*
P < 0.001; significant contrast between ASD-N and ASD-DM
**
P < 0.001.