title: Brief report: prevalence of pervasive developmental disorder in Brazil: a pilot study.
abstract: This pilot study presents preliminary results concerning the prevalence of Pervasive Developmental Disorder (PDD) in South America. It was a three-phase study conducted in a typical town in Southeast Brazil. Case definition was based in a combination of standardized instruments and clinical evaluations by experts. The prevalence of PDD was 27.2/10,000 (95% CI: 17.6-36.8) and some hypotheses were raised to explain this low frequency. Clinical findings of PDD cases were consistent with previous data, such as, male preponderance, more children diagnosed with PDD-NOS than with autistic disorder, and half of them born from older mothers. Moreover, the study raised concerns about treatment of cases, because identification of PDD had been late and access to services has been very limited.
authors.affiliation: Developmental Disorder Post Graduation Program, Mackenzie Presbyterian University, Rua da Consolação, 930. Edifício 38 Secretaria de Pós-Graduação em Distúrbios do Desenvolvimento, São Paulo, SP, 01302-907, Brazil. csilvestrep09@gmail.com
authors.forename: Cristiane S
authors.initials: CS
authors.lastname: Paula
authors.forename: Sabrina H
authors.initials: SH
authors.lastname: Ribeiro
authors.forename: Eric
authors.initials: E
authors.lastname: Fombonne
authors.forename: Marcos T
authors.initials: MT
authors.lastname: Mercadante
mesh_terms: D001938:Brazil / Q000453:epidemiology; D002648:Child; D002659:Child Development Disorders, Pervasive / Q000175:diagnosis / Q000453:epidemiology*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D008423:Maternal Age; D010865:Pilot Projects; D015995:Prevalence; D012737:Sex Factors