期刊
ATMOSPHERIC ENVIRONMENT
卷 45, 期 9, 页码 1675-1683出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.atmosenv.2011.01.005
关键词
Air quality regulation; Delhi; Air pollution and health; Life long exposure; Personal exposure; Lung function; Spatially detailed exposure
资金
- Population Studies and Training Center, Brown University
- NIH [R21HD046571-01, R21 ES014004-01A2]
This, the first systematic study, quantifies the health effects of air quality regulations in Delhi. which adopted radical measures to improve air quality, including, for example, the conversion of all commercial vehicles to compressed natural gas (CNG), and the closure of polluting industries in residential areas from 2000 to 2002. Air pollution data, collected at 113 sites (spread across Delhi and its neighboring areas) from July December 2003, were used to compute exposure at the place of residence of 3989 subjects. A socio-economic and respiratory health survey was administered in 1576 households. This survey collected time-use, residence histories, demographic information, and direct measurements of lung function with subjects. The optimal interpolation methods were used to link air pollution and respiratory health data at the place of their residence. Resident histories, in combination with secondary data, were used to impute cumulative exposure prior to the air-quality interventions, and the effects of recent air quality measures on lung function were then evaluated. Three important findings emerge from the analysis. First, the interventions were associated with a significant improvement in respiratory health. Second, the effect of these interventions varied significantly by gender and income. Third, consistent with a causal interpretation of these results, effects were the strongest among those individuals who spend a disproportionate share of their time out-of-doors. (C) 2011 Elsevier Ltd. All rights reserved.
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