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| ASD (n = 20) | TD (n = 21) | ||||
|---|---|---|---|---|---|
| M | SD | M | SD | p-value | |
| Chronological age (months) | 40.7 | 11.5 | 43.9 | 14.3 | ns |
| NVMA a (months) | 33.6 | 12.6 | 46.1 | 14.5 | .005 |
| VMA a (months) | 28.1 | 13.6 | 45.1 | 13.5 | < .001 |
| Sex-ratio (boy/girl) | 16/4 | 13/8 | ns | ||
| ADOS severity score | 6.5 | 1.8 | N/A | - | |
a NVMA (non verbal mental age) and VMA (verbal mental age) obtained from the Mullen Scales of Early Learning.
