Table 1.
Mean (M), standard deviation (SD), and coefficient of variation (CV) of the demographic characteristics.
| Child and mother characteristics | Autism Spectrum Disorder |
Down Syndrome |
Typical development |
||||||
|---|---|---|---|---|---|---|---|---|---|
| M | SD | VC | M | SD | VC | M | SD | VC | |
| Mental age (months) | 24.21 | 9.82 | 0.38 | 21.12 | 4.39 | 0.22 | 20.01 | 0.21 | 0.01 |
| Chronological age (months) | 43.33 | 7.62 | 0.18 | 36.68 | 8.71 | 0.24 | 20.01 | 0.21 | 0.01 |
| Mother’s age (years) | 36.81 | 3.73 | 0.10 | 35.43 | 6.18 | 0.17 | 25.43 | 6.12 | 0.24 |
| Social economic status | 37.80 | 13.26 | 0.35 | 20.84 | 10.04 | 0.48 | 21.48 | 5.59 | 0.26 |