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Relationship between ozone and temperature during the 2003 heat wave in France: consequences for health data analysis.

Abstract : BACKGROUND: PAPRICA is a research program designed to estimate the impact on the health of patients with chronic respiratory insufficiency of a prevention strategy based on notification of ozone pollution. The first year of this study was conducted during the 2003 heat wave, and high temperatures were therefore considered as a confounding factor in the data analysis. The aim of the present study was to assess the relationship between ozone and temperature in order to propose a methodology to distinguish between the effects of ozone and temperature on the impact of a prevention strategy with regard to ozone pollution. METHODS: Multivariate analyses were used to identify associated climate and ozone pollution profiles. This descriptive method is of great value to highlight the complexity of interactions between these parameters. RESULTS: Ozone concentration and temperature were strongly correlated, but the health impact of ozone pollution alone will be evaluated by focusing on situations characterized by ozone concentrations above 110 mug/m3/8h (air quality guidelines to protect human health defined by the French legislation) and temperatures lower than 26 degrees C, below the discomfort threshold. CONCLUSION: The precise relationship between ambient ozone concentration and temperature identified during the PAPRICA 2003 study period will be used in analysing the PAPRICA health data.
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Submitted on : Wednesday, December 27, 2006 - 1:01:22 PM
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Sandrine Lacour, Michèle de Monte, Patrice Diot, Jérôme Brocca, Nadège Veron, et al.. Relationship between ozone and temperature during the 2003 heat wave in France: consequences for health data analysis.. BMC Public Health, BioMed Central, 2006, 6, pp.261. ⟨10.1186/1471-2458-6-261⟩. ⟨inserm-00122142⟩



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