Wildfire-sourced fine particulate matter and preterm birth risks in Brazil: A nationwide population-based cohort study

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Artigo Científico
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2024
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ACESSO_RESTRITO_Artigo_2024_Wildfire_sourced_fine_particulate_matter_and_preterm_birth_risks_in_Brazil_a_nationwide_population_based_cohort_study_TC.pdf (2.98 MB)
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Wildfire-specific particulate matter with diameters ≤ 2.5 µm (PM2.5) is the key component of wildfire smoke, with potentially higher toxicity than PM2.5 from other sources. In this nationwide population-based cohort study, we included 22,163,195 births from Brazil during 2010–2019. Daily wildfire-specific PM2.5 was estimated through the chemical transport model. Time-varying Cox proportional hazards models were used to characterize the exposure-time-response (E-T-R) relationship between weekly wildfire-specific PM2.5 exposure and preterm birth (PTB) risks, followed by subgroup analyses. A 10 µg/m3 increment in wildfire-specific PM2.5 was associated with a hazard ratio of 1.047 (95 % confidence interval [CI]: 1.032–1.063) for PTB. Stronger associations between wildfire-specific PM2.5 and PTB were observed during earlier pregnancy, among female infants, and pregnant women < 18 years old, in ethnic minorities, with a length of education ≥ 11 years, from low-income or high temperature municipalities, and residing in North/Northeast regions. An estimated 1.47 % (95 % CI: 1.01 %–1.94 %) of PTBs were attributable to wildfire-specific PM2.5 in Brazil, increasing from 2010 to 2019. The PTBs attributable to wildfire-specific PM2.5 surpassed those attributed to non-wildfire PM2.5 (0.31 %, 95% CI: 0.09 %–0.57 %). Wildfire emerged as a critical source contributing to the PM2.5-linked PTBs. Prioritized fire management and emission control strategies are warranted for PTB prevention.

Palavras-chave
Cohort study; Wildfire-specific PM2.5; Preterm birth; Brazil; Critical exposure window; Time-varying Cox
Vínculo institucional
Produção vinculada ao Centro de Estudos das Cidades – Laboratório Arq.Futuro
Titulo de periódico
Journal of Hazardous Materials
URL da fonte
https://www.sciencedirect.com/science/article/pii/S0304389424028693
DOI
10.1016/j.jhazmat.2024.136290
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Idioma
Inglês
URL permanente
https://repositorio.insper.edu.br/handle/11224/7198
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Membros da banca
Área do Conhecimento CNPQ
CIENCIAS DA SAUDE

CIENCIAS BIOLOGICAS::ECOLOGIA

CIENCIAS EXATAS E DA TERRA::GEOCIENCIAS
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Coleção de Artigos Acadêmicos
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