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Título: | Aerosols from biomass burning and respiratory diseases in children, Manaus, Northern Brazil. |
Autor: | Andrade Filho, Valdir Soares de Artaxo, Paulo Hacon, S. S. Carmo, Cleber Nascimento do Cirino, Glauber G. |
Palavras-chave: | Aerosol Particulate Matter Aerosol Biomass 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 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 |
Data do documento: | 2013 |
Revista: | Revista de Saúde Pública |
É parte de: | 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. |
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