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. Author manuscript; available in PMC: 2021 Sep 15.
Published in final edited form as: Autism Res. 2020 Dec 29;14(3):450–463. doi: 10.1002/aur.2460

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