Association of sulfur dioxide exposure with circulatory system deaths in a medium-sized city in Brazil

Autor(es)

Amancio, C. T. ^[1] ; Nascimento, L. F. C. ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Univ Taubate, Dept Med, BR-12030180 Taubate, SP - Brazil

^[2] Univ Taubate, Programa Posgrad Ciencias Ambientais, BR-12030180 Taubate, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Journal of Medical and Biological Research; v. 45, n. 11, p. 1080-1085, NOV 2012.
• Citações Web of Science: 7

Resumo

There is a demonstrable association between exposure to air pollutants and deaths due to cardiovascular diseases. The objective of this study was to estimate the effects of exposure to sulfur dioxide on mortality due to circulatory diseases in individuals 50 years of age or older residing in Sao Jose dos Campos, SP. This was a time-series ecological study for the years 2003 to 2007 using information on deaths due to circulatory disease obtained from Datasus reports. Data on daily levels of pollutants, particulate matter, sulfur dioxide (SO2), ozone, temperature, and humidity were obtained from the Sao Paulo State Environmental Agency. Moving average models for 2 to 7 days were calculated by Poisson regression using the R software. Exposure to SO2 was analyzed using a unipollutant, bipollutant or multipollutant model adjusted for mean temperature and humidity. The relative risks with 95% CI were obtained and the percent decrease in risk was calculated. There were 1928 deaths with a daily mean (+/- SD) of 1.05 +/- 1.03 (range: 0-6). Exposure to SO2 was significantly associated with mortality due to circulatory disease: RR = 1.04 (95%CI = 1.01 to 1.06) in the 7-day moving average, after adjusting for ozone. There was an 8.5% decrease in risk in the multipollutant model, proportional to a decrease of SO2 concentrations. The results of this study suggest that residents of medium-sized Brazilian cities with characteristics similar to those of Sao Jose dos Campos probably have health problems due to exposure to air pollutants. (AU)

• Processo FAPESP: 10/20076-3 - Poluentes atmosféricos e óbitos por doenças cardiovasculares em indivíduos com 50 anos ou mais: estudo de série temporal
• Beneficiário: Camila Trolez Amancio
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica