Characteristics of Patients in the AC and CHB Cohorts
| AC | CHB | Combined | |
|---|---|---|---|
| Patients, n | 461 | 472 | 933 |
| Age range, y/mo (at visit) | 1/7 to 21/10 | 1/3 to 22/0 | – |
| Gender, n | |||
| Male | 369 | 386 | 755 |
| Female | 92 | 86 | 178 |
| Diagnosis, n | |||
| Autistic disorder | 211 | 236 | 447 |
| PDD-NOS | 227 | 227 | 454 |
| Asperger disorder | 22 | 9 | 31 |
| CDD | 1 | 0 | 1 |
| Secondary diagnosis, n | |||
| MR | 54 | NA | NA |
| Seizures | 36 | NA | NA |
| Multiple congenital anomalies | 16 | NA | NA |
CHB indicates Children's Hospital Boston; NA, not available; CDD, childhood disintegrative disorder.