Acute Effects of Exposure to Ambient Air Pollutants on Preterm Birth in Xiamen City (2015-2018), China.

: Urban energy consumption is one of the important causes of air pollution. The epidemiological risk assessment guided by air pollution is of great significance to the promotion of urban environmental protection. : The work researched the acute impact of exposure to air pollution on preterm birth (PTB) in Xiamen city from 2015 to 2018. Furthermore, the economic losses were assessed as well. : Association of air pollution and PTB with economic losses were assessed using the generalized additive model. : A total of 1991 PTB visits, who are inhabitant in Xiamen, have been investigated. An interquartile range (IQR) (10 μg/m) increase of PM, NO, and SO in the current day corresponded to the increase of 0.64% [95% CI: -1.22, 2.54%], 0.52% [95% CI: -5.21, 6.61%], and 2.33% [95% CI: -6.41, 11.58%] in daily PTB visits. Especially, PTB visits were significantly related with PM and NO in Lag 1 and NO and SO in Lag 2. Furthermore, for multipollutants, an IQR increase in PM, O, and CO, after adjustment with SO, was related with 5.04% [95% CI: -5.90, 17.24], 2.49% [95% CI: -6.07, 11.81], and 7.10% [95% CI: -2.79, 18.00] increase of PTB morbidity, respectively. The estimates of the number of excess PTBs attributed to typical pollutants PM and SO were ∼2400 and 1200 people, respectively, every year. The highest excess PTBs was estimated to occur as a result of PM and SO effects. : Although Xiamen has a relatively low level of air pollution, short-term exposure to NO, SO, and PM was linked to the increase of PTB visits.