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Prevalence of Respiratory Symptoms in Pirapora Do Bom Jesus Exposed to Sulfur Reduced Composts Compared with the Control Area. Sao Paulo, Brazil, 2004

2006; Lippincott Williams & Wilkins; Volume: 17; Issue: Suppl Linguagem: Inglês

10.1097/00001648-200611001-00654

1531-5487

Clarice Umbelino de Freitas, Roberto Grimaldi, M Ushirobira, Mariane Cristina De Oliveira, Manuel Martins, Suzushi Nishimura, L Sano, João Moraes,

Municipal Solid Waste Management

P-017 Introduction: The city of Pirapora do Bom Jesus is located 33.5 miles from the capital São Paulo and has a population of 14.600. The city is cut by Tietê River which receives domestic and industrial dump from neighbor cities. The city's inhabitants particularly have complaints about their respiratory system, relating them to the river's odor. The present study tried to compare the occurrence and risk of presenting respiratory and soreness symptoms in sample of Pirapora population and control area. Methods: The control city, São Lourenço da Serra, population 14.700, ranks the same in the Human Development Index. Both have a basic industrialization level and low number of vehicles. In them was applied a remembered questionnaire with 15 days of health symptoms, social and economical data along with habits in casual sample random of the population above 12 years old. The calculation of the sample based on the occurrence of respiratory symptoms found in literature. Fifteen days prior and during the investigation the state environmental department – CETESB measured the total reduced sulfur composts-TRS in both cities. The symptoms were categorized in: all respiratory, only respiratory soreness, lower respiratory symptoms and others. It was compared the occurrence of symptoms among both cities and calculated the Odds Ratio – OR including potential confounders. Results: There were 405 people investigated in the city of Pirapora (100% of the sample proposed) and 327 in São Lourenço. In the interview period (June and August 2004) the temperature had been lower in São Lourenço. The concentration of TRS was below 5ppb in São Lourenço during all time of investigation. In Pirapora it was above 5ppb in 89% of the 829 analysis (range: 550 ppb). The occurrence of respiratory symptoms (83.5%); soreness (86.2%) and low respiratory (51.1%) was greater in Pirapora than in São Lourenço: 77.1%, 79.2% and 41.3% respectively. The adjusted OR was: respiratory OR=2.15 (IC95%:1.40–3.29); soreness OR=2.08 (IC95%:1.41–3.01) low respiratory OR=1.56 (IC95%:1.12–2.19), presenting significant linear trend test when it add the symptoms. There has been no difference in occurrence of other symptoms. Discussion and Conclusions: The TRS levels in Pirapora have been above the odor perception's limit during almost the whole investigation period. Was found a higher respiratory and soreness symptoms occurrence in Pirapora. The risk in residing in Pirapora linearly increases as long as the symptoms are being added. We assume that the TRS levels contribute to this behavior.