Table 2.
Participant characteristics
| Characteristic | ASD Total N = 144 |
TD N = 41 |
p |
|---|---|---|---|
| Gender, n (%) | |||
| Male | 112 (77.8) | 27 (65.9) | 0.12 |
| Female | 32 (22.2) | 14 (34.1) | |
| Age (years) | |||
| Mean (SD) | 14.6 (7.8) | 16.3 (13.18) | 0.30 |
| Median (range) | 12.5 (6–54) | 11.0 (6–63) | |
| Age distribution, years, n (%) | |||
| 6–11 | 58 (40.3) | 21 (51.2) | |
| 12–17 | 46 (31.9) | 13 (31.7) | |
| 18–30 | 34 (23.6) | 1 (2.4) | |
| ≥ 31 | 6 (4.2) | 6 (14.6) | |
| Race, n (%) | |||
| White | 118 (81.9) | 34 (82.9) | 0.88 |
| Black or African American | 6 (4.2) | 2 (4.9) | |
| Asian | 4 (2.8) | 0 | |
| Multiple | 10 (6.9) | 3 (7.3) | |
| Other | 4 (2.8) | 0 | |
| Missing/unknown | 2 (1.4) | 2 (4.9) | |
| ADOS CSS Total Score, mean (SD) | 7.6 (1.7) | – | – |
| KBIT-2 IQ Composite Score, mean (SD) | 99.2 (19.6) | – | – |
ADOS CSS Autism Diagnostic Observation Schedule, 2nd edition, comparison score; KBIT-2 Kaufmann Brief Intelligence Test-2
P-values for gender and race (white vs. non-white) based on Chi square test
P-value for age based on two-sample t-test