Demographic characteristics of the TD and DD groups
| Variable | TD (n=103) | DD (n=61) | t or χ2 | p |
|---|---|---|---|---|
| Age (mo) | 57.8±8.8 | 63.6±9.2 | -4.03 |
<0.001 |
| Sex, boys | 60 (58.3) | 46 (75.4) | 4.93 |
0.026 |
| Diagnosis | ||||
| ASD | 42 (68.9) | |||
| ID | 45 (73.8) | |||
| LD | 11 (18.0) | |||
| SES | 12.10 |
0.002 | ||
| High | 30 (29.1) | 5 (8.2) | ||
| Moderate | 62 (60.2) | 42 (68.9) | ||
| Low | 11 (10.7) | 14 (23.0) |
Values are presented as mean±standard deviation or number (%). *analyzed by independent t test; †analyzed by chi-square test. ASD, autism spectrum disorder; DD, developmental disabilities; ID, intellectual disability; LD, language disorder; SES, socioeconomic status; TD, typical development