Air pollution and emergency room visits for upper airway respiratory infection disease in São Paulo city: evaluation of vehicle restriction

Revista Brasileira de Epidemiologia

Latorre, Maria do Rosário Dias de Oliveira³  Martins, Lourdes Conceição²  Saldiva, Paulo Paulo Hilário Nascimento²  Braga, Alfésio Luís Ferreira¹ 

[1] Universidade de Santo Amaro, São Paulo;Universidade de São Paulo;Universidade de São Paulo, São Paulo

关键词: Air pollution;    Aged respiratory tract infections;    Time series;   

DOI  :  10.1590/S1415-790X2001000300008

学科分类：过敏症与临床免疫学

来源: SciELO

【 摘 要 】

Some countries have adopted vehicular restriction in order to reduce air pollution levels. In São Paulo metropolitan region, the vehicle restriction was adopted from 1996 to 1998, in order to reduce air pollution, during wintertime. Since 1997, a similar project was implemented during the whole year in the central area of São Paulo in order to improve the urban traffic. This time series study was developed to investigate the relationship between daily levels of air pollutants (CO, NO₂, SO₂, PM₁₀ and O₃) and the daily numbers of elderly patients with upper respiratory infection diseases (URID) atended at the Clinics Hospital emergency room service of the University of São Paulo Medical School, during this period. Generalized adittive Poisson regression models were estimated and adjusted by seasonality (non-parametric smoother functions), weather (non-parametric smoother functions and linear terms), weekdays indicator, vehicular restriction indicator periods and the daily number of non respiratory admissions. The effects of air pollutants were estimated based on daily levels and 2 to 7 day moving average. Carbon monoxide (CO) and sulphor dioxide (SO₂) were associated with URID and these correlations were resistant even with the inclusion of control variables. The vehicular restriction reduced the pollutants levels. However, no reduction in emergency room visits for URID was detected.

【 授权许可】

CC BY