Seasonal association between ambient ozone and mortality in Zhengzhou, China

Lijie Qin, Jianqin Gu, Shijie Liang, Fang Fang, Weimin Bai, Xu Liu, Tao Zhao, Joseph Walline, Shenglong Zhang, Yingjie Cui, Yaxin Xu, Hualiang Lin

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


Different seasonal health effects of ambient ozone (O3) have been reported in previous studies. This might be due to inappropriate adjustment of temperature in different seasons. We used daily data on non-accidental mortality and ambient air pollution in Zhengzhou from January 19, 2013 to June 30, 2015. Season-stratified analyses using generalized additive models were conducted to evaluate the seasonal associations with adjustment of temperature with different lagged days (lag0–1 for warm season, lag0–14 for cold season). We recorded a total of 70,443 non-accidental deaths in Zhengzhou during the study period. Significant associations were observed between ambient O3 and mortality in cold season. Every 10-μg/m3 increment of 24-h O3 of 1-day lagged time was associated with a 1.38% (95% CI 0.60, 2.16%) increase in all cause mortality, 1.35% (95% CI 0.41, 2.30%) increase in cardiovascular mortality, and 1.78% (95% CI 0.43, 3.14%) increase in respiratory mortality. Similar associations were observed when using daily 1- and 8-h maximum concentrations of O3. No significant association was found during warm season. This study suggests a more pronounced ozone-mortality association in cold season in Zhengzhou, and we suggest that different lagged temperatures should be considered when examining the seasonal health effects of ambient ozone.

Original languageEnglish (US)
Pages (from-to)1003-1010
Number of pages8
JournalInternational Journal of Biometeorology
Issue number6
StatePublished - Jun 1 2017

All Science Journal Classification (ASJC) codes

  • Ecology
  • Atmospheric Science
  • Health, Toxicology and Mutagenesis


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