期刊
JOURNAL OF AUTISM AND DEVELOPMENTAL DISORDERS
卷 37, 期 7, 页码 1394-1395出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s10803-007-0374-4
关键词
Down syndrome; autism; pervasive developmental disorder; prevalence
The frequencies of pervasive developmental disorder (PDD) in Down's syndrome (DS) have been reported from 1% to 11%. However, it is not clear if the frequency of this co-occurrence is higher or lower than in other mental retardations. We study a large sample of DS population, finding a PDD frequency of 15.6%, with 5.58% of autism (eight males and two females) and 10.05% of PDD non autism (nine males and nine females. The meaning of this frequency is discussed.
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