Table.
Participant characteristics showing sex ratio, self-reported racial group, and parental education distribution by diagnostic group, as well as mean (standard deviation), and minimum-maximum values for age, IQ, ADOS-2 calibrated severity scores (CSS), SCQ scores, and Vineland-2 (VABS-2) expressive vocabulary scaled scores by diagnostic group and sex. Chi-square tests were used to compare distributions of sex, race, and parent education between diagnostic groups, and t-tests compared mean values for continuous variables. The first subcolumn in the table (“Sex”) refers to overall comparisons between males and females collapsed across diagnostic group, the second (“Dx”) to overall comparisons between ASC and TD groups collapsed across sex, and the third (“Sex in ASC”) to a comparison of males and females in the ASC subgroup alone.
| ASC (N = 50) | TD (N = 37) | Effects | |||||
|---|---|---|---|---|---|---|---|
| Sex ratio | 17f, 33m (66% Male) | 15f, 22m (59% Male) | χ2=0.16, p=0.69 | ||||
| Race | Black/African American: 3 Asian or Pacific Islander: 1 White/Caucasian: 40 Multiracial: 4 Other: 1 |
Black/African American: 8 Asian or Pacific Islander: 1 White/Caucasian: 23 Multiracial: 5 Other: 0 |
χ2=6.52, p=0.16 | ||||
| Maternal education (in years) | <=12 years: 3 13-16 years: 24 17+ years: 22 Unknown: 1 |
<=12 years: 2 13-16 years: 23 17+ years: 12 |
χ2=1.52, p=0.47 | ||||
| Female | Male | Female | Male | Sex | Dx | Sex in ASC | |
| Age (years) | 11.48 (2.38) 8.90-16.35 |
11.79 (2.55) 8.25-16.66 |
11.38 (2.44) 8.22-15.51 |
10.58 (2.44) 8.16-16.64 |
p=.74 d=−.07 |
p=.15 d=.32 |
p=.68 d=.13 |
| Full-Scale IQ | 109.76 (11.99) 79-130 |
105.27 (13.03) 79-131 |
105 (13.07) 86-129 |
109.68 (13.70) 86-133 |
p=.88 d=−.03 |
p=.74 d=−.07 |
p=.24 d=−.35 |
| Verbal IQ | 108.35 (11.66) 85-130 |
104.76 (13.17) 70-130 |
105.87 (14.34) 80-128 |
109.27 (14.78) 86-131 |
p=.87 d=−.04 |
p=.53 d=−.14 |
p=.35 d=−.28 |
| Non-verbal IQ | 108.24 (14.48) 80-130 |
104.55 (12.43) 80-130 |
103.07 (12.93) 81-122 |
107.68 (11.49) 89-130 |
p=.997 d=0 |
p=.997 d=0 |
p=.35 d=−.28 |
|
ADOS-2 CSS Total |
6.59 (2.69) 1-10 |
6.97 (2.01) 2-10 |
1.07 (0.26) 1-2 |
1.27 (0.46) 1-2 |
p=.43 d=.09 |
p<2e-16 d=3.27 |
p=.57 d=.17 |
| ADOS-2 SA CSS | 6.47 (2.62) 1-10 |
7.36 (1.76) 3-10 |
1.40 (0.74) 1-3 |
1.73 (0.83) 1-3 |
p=.09 d=.20 |
p<2e-16 d=3.22 |
p=.16 d=.43 |
| ADOS-2 RRB CSS | 7.35 (1.66) 5-10 |
6.30 (2.39) 1-10 |
1 (0) 1-1 |
2.09 (2.11) 1-7 |
p=.82 d=−.03 |
p<2e-16 d=2.50 |
p=.11 d=−.48 |
| SCQ Total * | 17.94 (7.11) 6-31 |
18.34 (6.79) 5-33 |
2.73 (2.52) 0-8 |
2.68 (3.27) 0-14 |
p=.87 d=.02 |
p<2e-16 d=2.81 |
p=.85 d=.06 |
| VABS-2* Expressive Voc | 13.94 (3.51) 7-20 |
12.45 (3.15) 7-18 |
17.00 (1.35) 14-19 |
17.18 (1.68) 13-19 |
p=.24 d=.27 |
p<.001 d=1.52 |
p=.14 d=.54 |
1 male participant from the ASC group was missing an SCQ score; 2 female participants from the TD group were missing VABS-2 Expressive Vocabulary scaled scores.