Table IV.
Summary of Prevalence Estimates of AD and PDD Across World Regions Since the Year 2000. Medians are not Presented When there were Too Few Estimates Available Within a Given Region
| AD estimates | PDD estimates | |||||
|---|---|---|---|---|---|---|
| Region | Median | Range | Number of estimates | Median | Range | Number of estimates |
| Europe | 19 | 7–39 | 16 | 62 | 30–116 | 14 |
| America | 22 | 11–40 | 7 | 65 | 13–110 | 12 |
| Western Pacific | 12 | 2.8–94 | 12 | — | — | 3 |
| South East Asia | — | — | 1 | — | — | 1 |
| Eastern Mediterranean | — | — | 0 | — | — | 3 |
| Africa | — | — | 0 | — | — | 0 |
| All | 17 | 2.8–94 | 36 | 62 | 1–189 | 33 |
AD, autistic disorder; PDD, developmental disorder.