AUTHOR=Weng Lvkan , Li Na , Feng Tienan , Zhu Rongjia , Zheng Zhi-Jie 

TITLE=Short-Term Association of Air Pollutant Levels and Hospital Admissions for Stroke and Effect Modification by Apparent Temperature: Evidence From Shanghai, China

JOURNAL=Frontiers in Public Health

VOLUME=Volume 9 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2021.716153

DOI=10.3389/fpubh.2021.716153

ISSN=2296-2565

ABSTRACT=Background: The epidemiological evidence on relationships between air pollution, temperature and stroke remains inconclusive. Limited evidence was available for the modification effect of apparent temperature on association between air pollution and hospital admissions for stroke.  Methods: A generalized additive model with Poisson regression was employed to estimate the relative risk (RR) of stroke admissions associated with air pollutants. Subgroup analyses were performed by age, sex, apparent temperature and season. Results: Short-term exposure to SO2 and NO2 were significantly associated with increased risk of hospital admissions for stroke in single-pollutant models. The associations of NO2 remained significant in two-pollutant models, but not SO2 associations. These associations did not vary across sex, age, apparent temperature and season. Conclusions: Elevated concentration levels of NO2 and SO2 were associated with increased hospital admissions for stroke with a significant lag effect. More research is warranted to explore whether the apparent temperature modified the associations between air pollution and stroke admissions.