Table 1 Age and gender of children in the different ASD datasets.
| Dataset | N | Median age | Range | Min | Max | M:F ratio |
|---|---|---|---|---|---|---|
| Special Needs System | 243 | 8.4 | 12.4 | 2.6 | 15 | 7.1:1 |
| Diagnosis dataset | 268 | 7.3 | 12.5 | 2.5 | 15 | 6.2:1 |
| Learning Disability Community Team | 40 | 9.6 | 10.5 | 4.1 | 14.6 | 12.3:1 |
| Lothian Autistic Society | 82 | 8.4 | 11 | 2.9 | 13.9 | 6.5:1 |
| Royal Hospital for Sick Children (hospital dataset) | 58 | 8.2 | 12.2 | 2.6 | 14.8 | 8.7:1 |
| Speech and Language Therapy | 61 | 9.6 | 12.2 | 2.6 | 14.8 | 6.6:1 |
| VTSS (school age children) | 9 | 9.2 | 9 | 6.5 | 13.8 | N/A* |
| Spectrum (preschool children) | 21 | 3.9 | 2.7 | 2.6 | 5.3 | 8.1:1 |
| SureStart | 54 | 4.7 | 3.9 | 2.6 | 6.5 | 9.8:1 |
*All male.