Health Canada, Environmental Health Science and Research Bureau, Population Studies Division, 50 Columbine Driveway, Ottawa, ON K1A 0K9, Canada; Department of Geosciences, Texas Tech University, 2500 Broadway, St. Lubbock, TX 79401, USA.
Health Canada, Environmental Health Science and Research Bureau, Population Studies Division, 50 Columbine Driveway, Ottawa, ON K1A 0K9, Canada.
Environ Pollut. 2014 Feb;185:322-32. doi: 10.1016/j.envpol.2013.11.007. Epub 2013 Dec 6.
Synoptic weather and ambient air quality synergistically influence human health. We report the relative risk of mortality from all non-accidental, respiratory-, and cardiovascular-related causes, associated with exposure to four air pollutants, by weather type and season, in 10 major Canadian cities for 1981 through 1999. We conducted this multi-city time-series study using Poisson generalized linear models stratified by season and each of six distinctive synoptic weather types. Statistically significant relationships of mortality due to short-term exposure to carbon monoxide, nitrogen dioxide, sulphur dioxide, and ozone were found, with significant modifications of risk by weather type, season, and mortality cause. In total, 61% of the respiratory-related mortality relative risk estimates were significantly higher than for cardiovascular-related mortality. The combined effect of weather and air pollution is greatest when tropical-type weather is present in the spring or summer.
天气概况和环境空气质量对人类健康具有协同影响。我们报告了 1981 年至 1999 年期间加拿大 10 个主要城市因暴露于四种空气污染物而导致所有非意外、呼吸和心血管相关原因的死亡率与天气类型和季节的相对风险。我们使用 Poisson 广义线性模型，根据季节和六种不同的天气概况类型进行分层，开展了这项多城市时间序列研究。研究发现，短期接触一氧化碳、二氧化氮、二氧化硫和臭氧与死亡率之间存在统计学显著关系，而且风险因天气类型、季节和死亡率原因而发生显著变化。总的来说，61%的呼吸相关死亡率的相对风险估计值明显高于心血管相关死亡率。当春夏季出现热带天气类型时，天气和空气污染的综合影响最大。
