Exposure to ambient air pollution is a major global health risk factor. Using recently updated hazard ratio functions, we estimate that the global premature mortality burden attributable to ambient PM 2.5 and O 3 exposure increased by about 30% and 17%, respectively, from 2000 to 2015. We analyzed these trends in terms of tradeoffs between changes in baseline mortality, population size, age distribution and exposure. Global population growth alone increased the mortality burden by about 29% and 42% among adults and children, respectively. On the other hand, decreasing baseline mortality during the same period lowered the burden by about 18% and 55% among adults and children, respectively. In high-income countries, aging of the population contributed to increasing premature mortality, while in low-income countries, in Central and West Africa for example, the growing youth population reduced premature mortality. Our results show that improved air quality genera...

中文翻译：

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不断变化的风险因素，在2000年至2015年期间导致周围空气污染导致过早死亡

暴露于环境空气污染是主要的全球健康风险因素。使用最近更新的风险比函数，我们估计，从2000年到2015年，归因于环境PM 2.5和O 3暴露的全球过早死亡负担分别增加了约30％和17％。我们根据变化之间的权衡取舍分析了这些趋势。基线死亡率，人口规模，年龄分布和接触情况。仅全球人口的增长就使成年人和儿童的死亡率负担分别增加了约29％和42％。另一方面，同期基线死亡率的降低使成年人和儿童的负担分别降低了约18％和55％。在高收入国家，人口老龄化导致过早死亡的增加，而在低收入国家，例如在中非和西非，不断增长的青年人口减少了过早的死亡率。我们的结果表明改善了空气质量