Table 7.
| Continents | Countries | Incidence of PKU |
|---|---|---|
| Asian populations | China | 1 in 17,000 |
| Korea | 1 in 41,000 | |
| Japan | 1 in 125,000 | |
| India | 1 in 6000 | |
| Turkey | 1 in 4200 | |
| European populations | Ireland | 1 in 4500 |
| Scotland | 1 in 5300 | |
| Czechoslovakia | 1 in 7000 | |
| Hungary | 1 in 11,000 | |
| Denmark | 1 in 12,000 | |
| France | 1 in 13,500 | |
| Norway | 1 in 14,500 | |
| United Kingdom | 1 in 14,300 | |
| Italy | 1 in 17,000 | |
| Finland | 1 in 200,000 | |
| North America | United States (Caucasians) | 1 in 10,000 |
| Canada | 1 in 22,000 | |
| Oceania | Australia | 1 in 10,000 |
| Latin American countries | Brazil | 1 in 25,294 |
| Argentina | 1 in 27,275 | |
| Chile | 1 in 19,510 |
PKU = phenylketonuria.