Table I.
Demographic and Clinical Features of Participants
| Variable | ASD group (n=29) Mean (SD) |
TYP group (n=24) Mean (SD) |
|---|---|---|
| Age in months | 114.83 (29.28) | 114.71 (33.79)a |
| Leiter-R Brief IQ | 99.48 (16.56) | 112.75 (13.91)b |
| Gender (% male) | 93% | 2%a |
| Ethnicity (% Caucasian) | 79% | 92%a |
| SCQ social | 4.48 (1.75) | 0.63 (0.71)b |
| CCC | 61.24 (22.18) | 7.67 (1.75)b |
| RBS-R | 19.93 (13.24) | 1.58 (2.59)b |
| IRB | 44.43 (19.44) | — c |
| IS | 12.89 (3.08) | 8.96 (2.40)b |
a
P>0.05.
b
P<0.01.
c
Interview for repetitive behavior data were not collected for typical control participants, given low rates of occurrence of repetitive behaviors for this group.
SCQ, social communication questionnaire (subscale score); CCC, children’s communication checklist (total score); RBS-R, repetitive behavior scale (total frequency score); IRB–interview for repetitive behaviors (total severity score); IS–interests scale (total severity score).