Table 2.
Children’s Demographic Information and Clinical Scores by Diagnostic Group
| Autistic | Nonautistic | Test Statistic (χ2 or t) | Significance (p) | |
|---|---|---|---|---|
| n (M:F) | 74 (60:14) | 49 (28:21) | 8.30 | .004** |
| Chronological Age (months) | 28.3 (5.3) | 22.9 (5.6) | 5.39 | < .001*** |
| Race | 10.7 | .01* | ||
| Caucasian | 60.8% | 87.8% | ||
| Black | 14.9% | 4.1% | ||
| Asian | 1.4% | 0.0% | ||
| Mixed Race | 23.0% | 8.2% | ||
| Ethnicity (% Not Hispanic) | 81.9% | 93.6% | 3.33 | .07 |
| Household Income (% Over $70,000) | 51.6% | 97.9% | 38.6 | < .001*** |
| Maternal Education | 46.0 | < .001*** | ||
| Up to High School/GED | 21% | 0% | ||
| Vocational/2-Year College/Some College | 35% | 4% | ||
| Bachelor’s Degree | 31% | 29% | ||
| Graduate Degree | 14% | 67% | ||
| MSEL NV-DQ | 72.3 (20.8) | 112.5 (12.5) | 13.2 | < .001*** |
| MSEL RL AE (months) | 12.1 (8.0) | 25.6 (7.3) | 9.4 | < .001*** |
| MSEL EL AE (months) | 13.8 (6.8) | 25.0 (8.0) | 7.9 | < .001*** |
| VABS-3 Expressive Communication v-scale score | 5.6 (3.3) | 15.3 (1.7) | 21.3 | < .001*** |
| VABS-3 Interpersonal Relationships v-scale score | 8.1 (2.3) | 15.6 (1.6) | 20.7 | < .001*** |
| ADOS-2 Comparison Score | 8.4 (1.8) | — | — | — |
Note. Mean (SD); MSEL = Mullen Scales of Early Learning; NV-DQ = Nonverbal Developmental Quotient; RL = Receptive Language; EL = Expressive Language; AE = age equivalence (months). v-Scale scores have mean = 15, standard deviation = 3. ADOS-2 Comparison Scores range from 1–10. See Supplement A for more precise breakdowns of household income (Table A1) and maternal education (Table A2).
Significance:
***
p < 0.001.
**
p < 0.01,
*
p < 0.05,