Table 1.
Participant Descriptive Statistics
| TD | ASD − AD | ASD + AD | X2, F, t-test: P-value | |
|---|---|---|---|---|
| Participants, n | 49 | 20 | 28 | |
| Gender (M, F) | 35, 14 | 15, 5 | 21, 7 | 0.92 |
| Age | 11.55 (0.83) | 11.77 (0.74) | 11.47 (0.82) | 0.33 |
| tIQ | 112.98 (12.94) | 90.86 (23.37) | 97.83 (29.25) | 0.001 |
| range = 83–136 | range = 41–131 | 39–170 | ||
| Family income (% above $75 K) | 54.20 | 40.00 | 66.70 | 0.19 |
| Parental education (either parent % college degree) | 66.70 | 61.10 | 52.00 | 0.47 |
| Ethnicity (% Hispanic/Latino) | 28.60 | 25.00 | 21.40 | 0.82 |
| Race (% Minority) | 28.60 | 10.00 | 42.90 | 0.04 |
| Psychoactive medication (%) | 12.20 | 60.00 | 28.60 | <0.001 (ASD − AD >TD, P <0.0001; ASD − AD>ASD + AD, P <0.05) |
| ADOS severity | NA | 7.70 (1.66) | 7.11 (1.52) | 0.20 |
| SRS T Score | 44.61 (5.00) | 71.82 (13.32) | 72.81 (11.46) | <0.001 (ASD − AD versus ASD + AD, ns) |
| FPS (%) | 63.96 (69.02) | 40.17 (66.51) | 95.36 (152.49) | |
| FPS mean rank | 53.00 | 37.95 | 49.89 | 0.13 (Kruskal–Wallis H) |
| Left amygdala volume (cm3) | 1.81 (0.20) | 1.86 (0.25) | 1.90 (0.20) | 0.28 |
| Right amygdala volume (cm3) | 1.97 (0.18) | 2.04 (0.26) | 2.05 (0.21) | 0.26 |
| Total cerebral volume (cm3) | 1143.56 (88.56) | 1165.26 (121.61) | 1181.38 (97.94) | 0.56 |