Prevalence of pervasive developmental disorder in Down's syndrome
R Lowenthal, CS Paula, JS Schwartzman… - Journal of autism and …, 2007 - Springer
Journal of autism and developmental disorders, 2007•Springer
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.
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.
Abstract
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.
Springer