Prevalence of congenital hypothyroidism among unscreened populations using active case finding
| Reference | Country | Birth years | Age at evaluation (years) | Birth cohort (N) | No with clinically detected congenital hypothyroidism | Prevalence |
|---|---|---|---|---|---|---|
| Jacobsen et al31 | Denmark | 1970–1975 | 3–8 | 436 959 | 72 | 1:6100 |
| Alm et al32 | Sweden | 1969–1975 | 2 | 767 698 | 112 | 1:6900 |
| Alm et al27 | Sweden | 1977–1978 | 5 | 100 239 | 15 | 1:6700 |
| de Jonge et al33 | The Netherlands | 1972–1974 | 1–4 | 594 951 | 94 | 1:6300 |
| Birrell et al28 | UK: Northern England | 1963–1975 | 5–15 | 480 000 | 72 | 1:6700 |
| Hulse et al30 | UK: Kent and East Sussex | 1965–1978 | 3–8 | 433 900 | 65 | 1:6700 |
| Pooled | 2 813 747 | 430 | 1:6500 |