title: Influence of passive smoking on learning in elementary school.
abstract: OBJECTIVE
  To analyze the association between household smoking and the development of learning in elementary schoolchildren.
  
  
  METHODS
  Cross-sectional study with 785 students from the 2nd to the 5th year of elementary school. Students were evaluated by the School Literacy Screening Protocol to identify the presence of learning disabilities. Mothers/guardians were interviewed at home through a validated questionnaire. Descriptive and bivariate analysis, as well as multivariate Poisson regression, were performed.
  
  
  RESULTS
  In the final model, the variables associated with learning difficulties were current smoking at the household in the presence of the child (PR=6.10, 95% CI: 4.56 to 8.16), maternal passive smoking during pregnancy (PR=1.46, 95% CI: 1.07 to 2.01), students attending the 2nd and 3rd years of Elementary School (PR=1.44, 95% CI: 1.10 to 1.90), and being children of mothers with only elementary level education (PR=1.36, 95% CI: 1.04 to 1.79).
  
  
  CONCLUSIONS
  The study demonstrated an association between passive exposure to tobacco smoke and learning difficulties at school.
authors: Universidade Federal de Mato Grosso (UFMT), Cuiabá, MT, Brazil. Electronic address: julianafono56@hotmail.com.
authors: Juliana Gomes
authors: JG
authors: Jorge
authors: School of Medicine, Universidade Federal de Mato Grosso (UFMT), Cuiabá, MT, Brazil.
authors: Clóvis
authors: C
authors: Botelho
authors: Instituto de Saúde Coletiva, Universidade Federal de Mato Grosso (UFMT), Cuiabá, MT, Brazil.
authors: Ageo Mário Cândido
authors: AM
authors: Silva
authors: Centro Universitário de Várzea Grande (UNIVAG), Várzea Grande, MT, Brazil.
authors: Gisele Pedroso
authors: GP
authors: Moi
mesh_terms: D001938:Brazil; D002648:Child; D002653:Child Behavior Disorders / Q000209:etiology; D003430:Cross-Sectional Studies; D005191:Family Characteristics; D005260:Female; D006801:Humans; D007859:Learning Disabilities / Q000209:etiology*; D008297:Male; D011247:Pregnancy; D012574:Schools; D012907:Smoking / Q000009:adverse effects; D012959:Socioeconomic Factors; D013334:Students / Q000706:statistics & numerical data*; D014028:Tobacco Smoke Pollution / Q000009:adverse effects*
chemical_list: D014028:Tobacco Smoke Pollution
keywords: Children; Crianças; Learning disorders; Poluição por fumaça de tabaco; Smoking; Tabagismo; Tobacco smoke pollution; Transtornos de Aprendizagem