Table 2.
Summary statistics for each tensor scalar in the AF by diagnostic group and hemisphere (mean, SD). ASD, autism spectrum disorder subjects. TD, typically developing controls. ΔG =column-wise mean difference, ASD − TD. ΔH =row-wise mean difference, L − R.
| Fractional anisotropy (FA) |
Mean diffusivity (MD, 10−3 mm2/s) |
||||||
|---|---|---|---|---|---|---|---|
| L | R | ΔH | L | R | ΔH | ||
| ASD | 0.437 (0.027) | 0.434 (0.022) | 0.004 | ASD | 0.766 (0.026) | 0.768 (0.024) | −0.002 |
| TD | 0.444 (0.013) | 0.422 (0.016) | 0.022 | TD | 0.737 (0.020) | 0.753 (0.024) | −0.015 |
| ΔG | −0.006 | 0.011 | ΔG | 0.029 | 0.016 | ||
| Axial diffusivity (AD, 10−3 mm2/s) |
Radial diffusivity (RD, 10−3 mm2/s) |
||||||
| L | R | ΔH | L | R | ΔH | ||
| ASD | 1.15 (0.029) | 1.14 (0.039) | 0.00 | ASD | 0.576 (0.033) | 0.580 (0.024) | −0.005 |
| TD | 1.11 (0.034) | 1.10 (0.050) | 0.01 | TD | 0.552 (0.019) | 0.579 (0.017) | −0.027 |
| ΔG | 0.04 | 0.05 | ΔG | 0.024 | 0.001 | ||