American journal of respiratory and critical care medicine
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Am. J. Respir. Crit. Care Med. · Jul 2019
Short-Term Exposure to Ambient Air Pollution and Asthma Mortality.
Rationale: Short-term exposure to air pollution has been associated with asthma exacerbation and increased healthcare use caused by asthma, but its effect on asthma mortality remains largely unknown. Objectives: To quantitatively assess the association between short-term exposure to air pollution and asthma mortality. Methods: We investigated 4,454 individuals who lived in Hubei province, China, and died from asthma between 2013 and 2018. ⋯ Overall, the estimates remained consistent in various sensitivity analyses. Conclusions: Our results provide new evidence that short-term exposures to PM2.5, NO2, and O3 may increase asthma mortality risk. Further studies are needed to confirm our findings in other populations.