Air pollution and cardiovascular hospital admissions in a medium-sized city in Sao Paulo state, Brazil

This study estimated the contribution of environmental pollutants to hospital admissions for cardiovascular disease in Sao Paulo State, Brazil. A time series ecological study was conducted on subjects >60 years old and living in Sao Jose dos Campos, whose population is approximately 700,000. Hospital admission data of public health patients (SUS) were obtained from DATASUS from 1 January 2004 to 31 December 2006, according to International Classification of Diseases-10 diagnoses I20-I22 and I24. PM10, SO2, and O3 were the studied pollutants; control variables were mean temperature and relative humidity. Pollutant data were obtained from the Sao Paulo State Sanitary Agency. A generalised linear model Poisson regression with lags of up to 5 days was used. There were 1303 hospital admissions during the period. PM exposure was significantly associated with hospitalisation for cardiovascular disease 3 days post-exposure (relative risk ) 1.006; 95% confidence interval ) 1.000 to 1.010); an increase of 16 íg/m3 was associated with a 10% increase in hospitalisation risk; other pollutants were not associated with hospitalisation. The author concluded that it was possible to identify the role of PM exposure as an environmental pollutant in hospitalisation for cardiovascular disease in a medium sized city in southeastern Brazil.

Author: Nascimento, L. F. C. ;Full Source: Brazilian Journal of Medical and Biological Research [computer optical disk] 2011, 44(7), 720-724 (Eng) ;