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Demographic and main clinical variables of the sample.
| Variables | Subtypes | Frequency |
|---|---|---|
| Gender | Male | 26 (74.3%) |
| Female | 9 (25.7%) | |
| Etiology | Idiopathic | 28 (80.0%) |
| Syndromic | 7 (20.0%) | |
| Cognitive impairment (CI) | Yes | 11 (31.4%) |
| No | 20 (57.1%) | |
| Nonvaluable | 4 (11.4%) | |
| Language development | Verbal | 12 (34.3%) |
| Nonverbal | 23 (65.7%) |
