Table 1.
Comparison of demographic information and the area of interest (AOI)-based features in the autism spectrum disorder (ASD) and typical development (TD) groups.
| Characteristic | ASD | TD | Group comparison | P value | |
| Demographic characteristics |
|
|
|
|
|
|
|
Sex ratio, M:F | 17:2 | 17:3 | χ21=0.17 | .68 |
|
|
Age (months), mean (SD) | 99.6 (25.1) | 108.8 (27.0) | t37=1.09 | .28 |
|
|
IQ, mean (SD) | 100.8 (22.7) | 116.1 (22.7) | t37=2.45 | .02 |
| AOI features, mean (SD)a |
|
|
|
|
|
|
|
Mouth_Session 1 | 0.05 (0.06) | 0.19 (0.13) | U=59.5 | <.001 |
|
|
Eyes_Session 1 | 0.06 (0.06) | 0.08 (0.09) | U=173.0 | .63 |
|
|
Face_Session 1 | 0.21 (0.17) | 0.41 (0.18) | U=70.5 | .001 |
|
|
WholeBody_Session 1 | 0.33 (0.23) | 0.55 (0.21) | U=85.5 | .003 |
|
|
Mouth_Session 2 | 0.05 (0.09) | 0.16 (0.13) | U=88.0 | .004 |
|
|
Eyes_Session 2 | 0.04 (0.04) | 0.06 (0.07) | U=143.0 | .18 |
|
|
Face_Session 2 | 0.17 (0.16) | 0.39 (0.20) | U=77.0 | .001 |
|
|
WholeBody_Session 2 | 0.29 (0.26) | 0.52 (0.25) | U=95.5 | .008 |
|
|
Mouth_Session 3 | 0.12 (0.15) | 0.21 (0.17) | U=131.0 | .10 |
|
|
Eyes_Session 3 | 0.07 (0.06) | 0.08 (0.10) | U=186.0 | .91 |
|
|
Face_Session 3 | 0.33 (0.26) | 0.49 (0.21) | U=120.5 | .05 |
|
|
WholeBody_Session 3 | 0.46 (0.28) | 0.06 (0.20) | U=134.5 | .12 |
|
|
Mouth_Session 4 | 0.05 (0.06) | 0.12 (0.12) | U=122.0 | .05 |
|
|
Eyes_Session 4 | 0.06 (0.09) | 0.08 (0.11) | U=183.5 | .85 |
|
|
Face_Session 4 | 0.21 (0.20) | 0.32 (0.18) | U=120.0 | .05 |
|
|
WholeBody_Session 4 | 0.34 (0.25) | 0.47 (0.22) | U=125.5 | .07 |
aDue to a violation of the normality assumption, Mann-Whitney U tests were performed for group comparisons on AOI-based features.