Respiratory morbidity variability in function of environmental variables in the Metropolitan Region of São Paulo, Brazil

Abstract

This study evaluates the influence of the air pollutants and meteorological variables on children respiratory morbidity in different households at the city of Sao Paulo, Brazil. The households were selected for the Wheezing Project which followed up children under 2 years old to monitor the occurrence of respiratory diseases from 2003 to 2006. The chosen indoor environments were houses, scattered through the city. There will be analyzed association between the Wheezing project data air quality parameters for CO, coarse particulate matter (PM10), O3, SO2 and NO2 data to be obtained from CETESB, São Paulo Environment Agency. These data were measured in many automatic stations during the study period. The choice of reference station will be evaluated through a cluster analysis as well as it will be determined in the synoptic conditions in order to establish the effects of these conditions to the children health. The effect of fine particulate material (PM2.5) will be analyzed the model of particle deposition in the lung. This model works with concentrations (weight per unit volume) of particulate matter y ranges diameters van entry of 1nm to 100 m . There is missing data due to the fact that CETESB did not analyzed it during these years, those data will be generated by multiple regression models. The synoptic systems will also be detailed analyzed through weather stations as well as synoptic charts. The results may help the public politics of air pollutant control agencies as well as weather forecasters to warn the public about the weather changes affecting young children