Efeitos das condições climáticas no trimestre de nascimento sobre asma e pneumonia na infância e na vida adulta em uma coorte no Sul do Brasil

Translated title of the contribution: The effects of season at time of birth on asthma and pneumonia in childhood and adulthood in a birth cohort in southern Brazil

David Alejandro González, Cesar G. Victora, Helen Gonçalves

Research output: Contribution to journalArticle

Abstract

This study evaluated the effects of seasonal weather at time of birth and ambient temperature during the first six months of life on hospitalizations due to asthma and pneumonia in preschool children and on diagnosis of asthma in adulthood among individuals from the 1982 birth cohort in Pelotas, Rio Grande do Sul, Brazil. The cohort included 5,914 live births, of which 77% were followed up until adulthood (23-24 yr). The risk of hospitalization due to pneumonia and asthma among children born from April to June (autumn) was 1.31 (95%CI: 0.99-1.73) to 2.4 (95%CI: 1.11-4.99) times higher than that of children born from January to March (summer). For temperature in the first six months of life, risk of hospitalization was 1.64 (95%CI: 1.26-2.13) to 3.16 (95%CI: 1.63-6.12) times higher for children born in the coldest as compared to the hottest temperature tertile. The effects of seasonality decreased with age, and the association with asthma in adulthood was weak. Hospitalizations in poor children were more frequent, but the effects of seasonality on pneumonia were more evident among the wealthiest.

Original languagePortuguese
Pages (from-to)1089-1102
Number of pages14
JournalCadernos de saúde pública / Ministério da Saúde, Fundação Oswaldo Cruz, Escola Nacional de Saúde Pública.
Volume24
Issue number5
DOIs
StatePublished - May 2008
Externally publishedYes

Fingerprint

Brazil
Pneumonia
Hospitalization
Asthma
Parturition
Temperature
Weather
Live Birth
Preschool Children
Hot Temperature

Keywords

  • Asthma
  • Climate effects
  • Pneumonia

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

Cite this

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abstract = "This study evaluated the effects of seasonal weather at time of birth and ambient temperature during the first six months of life on hospitalizations due to asthma and pneumonia in preschool children and on diagnosis of asthma in adulthood among individuals from the 1982 birth cohort in Pelotas, Rio Grande do Sul, Brazil. The cohort included 5,914 live births, of which 77{\%} were followed up until adulthood (23-24 yr). The risk of hospitalization due to pneumonia and asthma among children born from April to June (autumn) was 1.31 (95{\%}CI: 0.99-1.73) to 2.4 (95{\%}CI: 1.11-4.99) times higher than that of children born from January to March (summer). For temperature in the first six months of life, risk of hospitalization was 1.64 (95{\%}CI: 1.26-2.13) to 3.16 (95{\%}CI: 1.63-6.12) times higher for children born in the coldest as compared to the hottest temperature tertile. The effects of seasonality decreased with age, and the association with asthma in adulthood was weak. Hospitalizations in poor children were more frequent, but the effects of seasonality on pneumonia were more evident among the wealthiest.",
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