The frequency of the fragile X chromosome among schoolchildren in Coventry
- PMID: 3783615
- PMCID: PMC1049774
- DOI: 10.1136/jmg.23.5.396
The frequency of the fragile X chromosome among schoolchildren in Coventry
Abstract
A population study has been carried out among schoolchildren in the City of Coventry in order to ascertain the frequency of mental retardation associated with the fragile X chromosome. The prevalence of the fragile X mental retardation syndrome in the 11 to 16 year age group (the age of greatest ascertainment) was about 1.0 per 1,000 and therefore indicates that the syndrome is a major cause of mental retardation.
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