title: Prevalence of sleep disorders in children of a public hospital in São Paulo.
abstract: OBJECTIVE
  To investigate the prevalence of sleep disorders in a sample of children from a public hospital in the city of São Paulo, Brazil.
  
  
  METHODS
  330 children, who came to the clinical laboratory, were consecutively investigated for sleep disorders, using the sleep disturbance scale for children. Gender, age, and social/economical classification were considered.
  
  
  RESULTS
  Sleep disordered breathing (SDB) showed higher prevalence in our sample (55%) than in data found in the literature. Prevalence of sleep hyperhydrosis (SHY) was 27% considering the whole sample. Boys and children in age range 7.1 to 11 years old showed higher prevalence for SDB as well as children belonging to lower social/economic classifications who were also more prevalent for disorders in the transition of sleep-wakefulness.
  
  
  CONCLUSIONS
  Sleep disorders were highly prevailing in our study, mostly SDB and SHY which were exceedingly more prevalent in boys in relation to international literature.
authors.affiliation: Children's Hospital Candido Fontoura, Federal University of São Paulo, São Paulo, SP, Brazil.
authors.forename: Clarisse
authors.initials: C
authors.lastname: Potasz
authors.forename: Maria Ligia
authors.initials: ML
authors.lastname: Juliano
authors.forename: Maria José
authors.initials: MJ
authors.lastname: Varela
authors.forename: Patrícia Gouveia
authors.initials: PG
authors.lastname: Ferraz
authors.forename: Luciane Bizari de
authors.initials: LB
authors.lastname: Carvalho
authors.forename: Lucila Fernandes do
authors.initials: LF
authors.lastname: Prado
authors.forename: Gilmar Fernandes do
authors.initials: GF
authors.lastname: Prado
mesh_terms: D017677:Age Distribution; D001938:Brazil / Q000453:epidemiology; D002648:Child; D005260:Female; D006779:Hospitals, Public; D006801:Humans; D008297:Male; D015995:Prevalence; D012893:Sleep Wake Disorders / Q000453:epidemiology*; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires