Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/17926
Title: Aerosols from biomass burning and respiratory diseases in children, Manaus, Northern Brazil.
Authors: Andrade Filho, Valdir Soares de
Artaxo, Paulo
Hacon, S. S.
Carmo, Cleber Nascimento do
Cirino, Glauber G.
Keywords: Aerosol
Particulate Matter
Aerosol
Biomass
Brasil
Child
Environmental Monitoring
Female
Fire
Hospitalization
Human
Infant
Male
Medical Information System
Meteorological Phenomena
Particulate Matter
Child, Preschool
Public Health
Respiratory Tract Diseases
Statistical Model
Statistics And Numerical Data
Aerosols
Biomass
Brasil
Child
Child, Preschool
Environmental Monitoring
Female
Fires
Health Information Systems
Hospitalization
Humans
Infant
Linear Models
Male
Meteorological Concepts
National Health Programs
Particulate Matter
Respiratory Tract Diseases
Issue Date: 2013
metadata.dc.publisher.journal: Revista de Saúde Pública
metadata.dc.relation.ispartof: Volume 47, Número 2, Pags. 239-247
Abstract: To investigate the effects of fine particulate matter emitted through biomass burning on hospitalizations for respiratory diseases in children living in Manaus, Northern Brazil. Descriptive study with ecologic time series design carried out in Manaus from 2002 to 2009. Hospital admission data were obtained from the Unified Health System database. PM2.5 levels were estimated using aerosol remote sensing through the measurement of aerosol optical depth at a wavelength of 550 nm. Statistical methods were used in the data analysis, with Pearson correlation and multiple linear regression between variables, with a 95% confidence interval. The region of Manaus showed low PM2.5 concentrations when compared to the Southern Amazonian region. Between August and November (dry period in the region), was when the highest mean levels of PM2.5, estimated between 18 to 23 μg/m3, and the largest number of fires were observed. For the rainy season, an average of 12 μg/m3, 66% lower than the dry season measurements (20.6 μg/m3) was observed. The highest rates of hospitalization were observed during the rainy season and April was the month with the highest levels at 2.51/1,000 children. A positive association between hospital admissions and relative humidity (R = 0.126; p-value = 0.005) was observed, while the association between admissions and PM2.5 was negative and statistically significant (R = -0.168; p-value = 0.003). The R 2 of the final model (Hospitalizations = 2.19*Humidity - 1.60*PM2.5 - 0.23*Precipitation) explained 84% of hospitalizations due to respiratory disease in children living in Manaus, considering the independent variables statistically significant (humidity, PM2.5, and precipitation). Hospital admissions for respiratory diseases in children in Manaus, were more related to weather conditions and in particular relative humidity, than to exposure to aerosols emitted by biomass burning in the Amazonian region.
URI: https://repositorio.inpa.gov.br/handle/1/17926
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