Table 2.
Occipitofrontal Circumference z Scores at Birth and at a Median Age of 10 Months for 10 Boys With Autism and 10 Boys With Pervasive Developmental Disorder-Not Otherwise Specified (PDD)
| Birth | Approximately Age 10 m | Change in z Score | Diagnosis at Age 3 y |
|---|---|---|---|
| −1.81 | −1.12 | 0.68a | PDD |
| −1.56 | 1.15 | 2.71a | Autism |
| −1.31 | −0.11 | 1.20a | Autism |
| −0.89 | 1.39 | 2.28a | Autism |
| −0.66 | −0.79 | −0.12 | PDD |
| −0.46 | −2.12 | −1.66a | Autism |
| −0.27 | 0.19 | 0.45 | PDD |
| −0.17 | 0.11 | 0.28 | Autism |
| −0.11 | 0.88 | 0.99a | PDD |
| 0.21 | 0.68 | 0.47 | Autism |
| 0.21 | 1.46 | 1.25a | PDD |
| 0.21 | 2.06 | 1.85a | PDD |
| 0.38 | 1.17 | 0.79a | PDD |
| 0.38 | 1.49 | 1.11a | PDD |
| 0.57 | 1.17 | 0.59 | Autism |
| 0.57 | 2.31 | 1.74a | PDD |
| 1.16 | 2.13 | 0.97a | Autism |
| 1.17 | 1.63 | 0.46 | Autism |
| 1.30 | 1.55 | 0.26 | PDD |
| 1.98 | 1.93 | −0.05 | Autism |
a
Change of ±0.68, representing 1 SD.