Abstract

Out-of-hospital cardiac arrest (OHCA) is a major public health problem due to its high prevalence and fatality rate worldwide. The investigation of risk factors is imperative and may provide new insight on early prevention of OHCAs. Multiple studies investigating the associations between air pollutions and OHCAs were conducted in developed countries with low air pollution status. The results were inconsistent [1–3]. Although the effects of air pollutions on human health in China have recently attracted more and more concern, especially owning to the increasing number of days with very high levels of air pollutants, the data about the associations between air pollutants and OHCAs are quite limited.

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