International Journal of Biometeorology

, Volume 55, Issue 4, pp 547–554

Impact of air pollution control measures and weather conditions on asthma during the 2008 Summer Olympic Games in Beijing

  • Yi Li
  • Wen Wang
  • Jizhi Wang
  • Xiaoling Zhang
  • Weili Lin
  • Yuanqin Yang
Original Paper


The alternative transportation strategy implemented during the 2008 Summer Olympic Games in Beijing provided an opportunity to study the impact of the control measures and weather conditions on air quality and asthma morbidity. An ecological study compared the 41 days of the Olympic Games (8 August–17 September 2008) to a baseline period (1–30 June). Also, in order to emphasize the impact of weather conditions on air quality, a pollution linking meteorological index (Plam) was introduced to represent the air pollution meteorological condition. Our study showed that the average number of outpatient visits for asthma was 12.5 per day at baseline and 7.3 per day during the Olympics—a 41.6% overall decrease. Compared with the baseline, the Games were associated with a significant reduction in asthma visits (RR 0.58, 95%CI: 0.52–0.65). At 16.5 visits per day, asthma visits were also significantly higher, during the pre-Olympic period (RR 1.32, 95% CI: 1.15–1.52). The study also showed that the RR of asthma events on a given day, as well as the average daily peak ozone concentration during the preceding 48–72 h, increased at cumulative ozone concentrations of 70 to 100 ppb and 100 ppb or more compared with ozone concentrations of less than 70 ppb (P < 0.05). We concluded that along with “good” weather conditions, efforts to reduce traffic congestion in Beijing during the Olympic Games were associated with a prolonged reduction in air pollution and significantly lower rates of adult asthma events. These data provide support for efforts to reduce air pollution and improve health via reductions in motor vehicle traffic.


Air pollution Asthma Meteorological Olympic Games 


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Copyright information

© ISB 2010

Authors and Affiliations

  • Yi Li
    • 1
  • Wen Wang
    • 2
  • Jizhi Wang
    • 1
  • Xiaoling Zhang
    • 3
  • Weili Lin
    • 1
  • Yuanqin Yang
    • 1
  1. 1.Centre for Atmosphere Watch and ServicesChinese Academy of Meteorological SciencesBeijingPeople’s Republic of China
  2. 2.Beijing Institute of Respiratory MedicineBeijing Chaoyang HospitalBeijingPeople’s Republic of China
  3. 3.Beijing Urban Meteorological Research InstituteChina Meteorological AdministrationBeijingPeople’s Republic of China

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