Environmental tobacco smoke (ETS) exposure and respiratory morbidity in school age children.
BACKGROUND
Tobacco smoke is a risk factor for Chronic Obstructive Pulmonary Disease and a major public health problem. Prenatal maternal smoking and post-natal environmental tobacco smoke (ETS) lead to dose-dependent decrease in lung function and respiratory morbidity. Influence of different socioeconomic indicators and ETS in the home has also been suggested.


METHODS
Data on 313 children (52 % male) from 4 public schools in Lisbon was analyzed [1st (46 %) and 4th graders]. ETS assessment and respiratory symptoms were based on a self-answered questionnaire. All children performed standard spirometry in the school setting and 54 % were acceptable according to ATS/ERS criteria. Descriptive and bivariate analysis of the most relevant variables was done, followed by multiple logistic regression analysis adjusted to the variables with clinical/statistical relevance.


RESULTS
ETS in the home was found in 41 % (maternal smoking during pregnancy 18 %, smoking mother 32 %, smoking father 38 %). Smoking fathers had lower education and less qualified occupation. Cough was more frequent in children with a smoking mother (adjusted OR = 2.1 95CI 1.1-4.0) and wheezing in children with maternal smoking during pregnancy and smoking parents. All differences were significant (p < 0.05). No association was found between parental education and cough/wheeze or ETS and respiratory infections/asthma/decreased spirometric values.


CONCLUSIONS
Children in Lisbon are frequently exposed to ETS which results in significant respiratory morbidity. Targeted interventions must have social conditions in consideration. In this study, field spirometry was not helpful in early detection of lung function disability in children associated with ETS.
Serviço de Pediatria, Departamento da Criança e da Família, Clínica Universitária de Pediatria, Hospital de Santa Maria, Centro Hospitalar Lisboa Norte EPE, Lisboa, Portugal. carolinaconstant@sapo.pt
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Constant
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Sampaio
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Negreiro
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Aguiar
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Silva
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Salgueiro
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Bandeira
D000293:Adolescent; D000397:Air Pollution; D002648:Child; D002675:Child, Preschool; D004781:Environmental Exposure / Q000009:adverse effects* / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D008297:Male; D012140:Respiratory Tract Diseases / Q000453:epidemiology / Q000209:etiology*; D012189:Retrospective Studies; D014028:Tobacco Smoke Pollution / Q000009:adverse effects* / Q000706:statistics & numerical data
D014028:Tobacco Smoke Pollution