Ozone and Daily Mortality in Shanghai, China

Sample size: 173911 publication 10 minutes Evidence: moderate

Author Information

Author(s): Zhang Yunhui, Huang Wei, Stephanie J. London, Song Guixiang, Chen Guohai, Jiang Lili, Zhao Naiqing, Chen Bingheng, Kan Haidong

Primary Institution: Fudan University, Shanghai, China

What is the relationship between ozone levels and daily mortality in Shanghai?

Ozone pollution has stronger health effects in the cold than in the warm season in Shanghai.

Ozone was significantly associated with total and cardiovascular mortality in the cold season.
An increase of 10 μg/m3 of ozone corresponds to a 0.45% increase in total nonaccidental mortality.
The effect of ozone on mortality was larger in females than in males.
Older adults (≥ 65 years) showed a positive association between ozone levels and mortality risk.
Results were generally insensitive to model specifications.
Effects of ozone on mortality were statistically significant for most lagged days examined.
Multiday exposures usually had larger effects than single-day exposure.

Breathing in ozone can make people sick and even lead to death, especially in colder weather.

A time-series study using generalized additive models to analyze daily mortality data and ozone pollution over four years.

Potential measurement error in exposure assessment could bias results.

The study used averaged monitoring results as a proxy for population exposure, which may not accurately reflect personal exposure levels.

The study population included residents of nine urban districts in Shanghai, with a total of 173,911 deaths recorded.

0.45

95% CI, 0.16–0.73%

p<0.05

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