Summary of Resource
| Category | Count |
| Affected sib pairs with diagnosis of Autistic Disorder by all three criteria (DSM-IV, ADI, ADOS-G) | 9 |
| Affected sib pairs with diagnosis of Autistic Disorder by two or more criteria | 20 |
| Individuals examined | 41 |
| Individuals with a diagnosis of Autistic Disorder by ADI criteria | 33 |
| Individuals with a diagnosis of Autistic Disorder by ADOS criteria | 32 |
| Individuals with a diagnosis of Autistic Disorder by DSM-IV criteria | 32 |
| Individuals with a diagnosis of Autistic Disorder by all three criteria | 28 |
| Individuals with a diagnosis of Autistic Disorder by two or more criteria | 33 |
| Individuals with a diagnosis of PDD-NOS by ADOS Criteria | 7 |
| Individuals with a diagnosis of PDD-NOS by DSM-IV Criteria | 4 |
| Individuals with a clinical diagnosis of Atypical Features of Behavior | 4 |
| Families with monozygotic twins (confirmed) | 3 |
| Multigenerational families | 6 |
| Total number of families | 20 |
| Individuals with Fragile X testing | 25 |
