International Journal of Biometeorology

, Volume 62, Issue 5, pp 851–860 | Cite as

Effects of diurnal temperature range on mortality in Hefei city, China

  • Jing Tang
  • Chang-chun Xiao
  • Yu-rong Li
  • Jun-qing Zhang
  • Hao-yuan Zhai
  • Xi-ya Geng
  • Rui Ding
  • Jin-xia Zhai
Original Paper


Although several studies indicated an association between diurnal temperature range (DTR) and mortality, the results about modifiers are inconsistent, and few studies were conducted in developing inland country. This study aims to evaluate the effects of DTR on cause-specific mortality and whether season, gender, or age might modify any association in Hefei city, China, during 2007–2016. Quasi-Poisson generalized linear regression models combined with a distributed lag non-linear model (DLNM) were applied to evaluate the relationships between DTR and non-accidental, cardiovascular, and respiratory mortality. We observed a J-shaped relationship between DTR and cause-specific mortality. With a DTR of 8.3 °C as the reference, the cumulative effects of extremely high DTR were significantly higher for all types of mortality than effects of lower or moderate DTR in full year. When stratified by season, extremely high DTR in spring had a greater impact on all cause-specific mortality than other three seasons. Male and the elderly (≥ 65 years) were consistently more susceptible to extremely high DTR effect than female and the youth (< 65 years) for non-accidental and cardiovascular mortality. To the contrary, female and the youth were more susceptible to extremely high DTR effect than male and the elderly for respiratory morality. The study suggests that extremely high DTR is a potential trigger for non-accidental mortality in Hefei city, China. Our findings also highlight the importance of protecting susceptible groups from extremely high DTR especially in the spring.


Diurnal temperature range Mortality Distributed lag non-linear model Season 



This study was supported by the national monitoring project for the impact of air pollution on the people health (no fund number). Further appreciation is to all the staff members at the Hefei City Center for Disease Control and Prevention, Hefei, China, for the data collection.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests.

Supplementary material

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Copyright information

© ISB 2017

Authors and Affiliations

  • Jing Tang
    • 1
  • Chang-chun Xiao
    • 2
  • Yu-rong Li
    • 3
  • Jun-qing Zhang
    • 2
  • Hao-yuan Zhai
    • 4
  • Xi-ya Geng
    • 1
  • Rui Ding
    • 1
  • Jin-xia Zhai
    • 1
  1. 1.Department of Occupational and Environmental HealthSchool of Public Health, Anhui Medical UniversityHefeiChina
  2. 2.Hefei Center for Disease Control and PreventionHefeiChina
  3. 3.Zhejiang Provincial Center for Disease Control and PreventionHangzhouChina
  4. 4.School of Clinical MedicineWannan Medical CollegeWuhuChina

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