Temporal trends in respiratory mortality and short-term effects of air pollutants in Shenyang, China

Xue, Xiaoxia; Chen, Jianping; Sun, Baijun; Zhou, Baosen; Li, Xuelian

doi:10.1007/s11356-018-1270-5

Cited by 47 publications

(22 citation statements)

References 45 publications

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“…Quite a few studies have also reported high effect estimates of O 3 concerning respiratory mortality. A study in Shenyang [34] reported a high and statistically significant effect estimate of 4.7(0.00, 9.9). The non-significance of O 3 may be attributed to several factors including concentration, duration of exposure and susceptibility of the population [35].…”

Section: Discussionmentioning

confidence: 99%

Ambient air pollution and respiratory mortality in Xi’an, China: a time-series analysis

Mokoena

Ethan

et al. 2019

Respir Res

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Background Although air pollution is a known fundamental problem in China, few studies have investigated the associations between ambient air pollution and respiratory mortality in non-metropolitan cities of China. The study aimed to investigate a potential relationship between short-term exposure to ambient air pollutants and respiratory mortality in Xi’an, China. Methods Daily averages of PM 2.5 , SO 2 , O 3 , temperature, relative humidity and daily counts of respiratory mortality were obtained (2014–2016). Using a single and multi-pollutant approach in time-series analysis, the generalized additive model with natural splines was used for analysis. Subgroup analysis stratified by gender and age group (≤ 64 years and ≥ 65 years) was conducted. Results Seven thousand nine hundred sixty-five cases of respiratory mortality were assessed, with 62.9, 28.5, and 8.6% of mortality attributed to chronic lower respiratory diseases, influenza and pneumonia, as well as other forms of respiratory diseases, respectively. Observed pollutants were significantly associated with respiratory mortality. In the single pollutant model, 10 μg/m 3 increase in a two-day moving average of PM 2.5 , and SO 2 concentrations were significantly associated with relative risk 1.313(1.032, 1.708) and 1.4020(0.827, 2.854) of respiratory mortality, respectively. The effects of both air pollutants remained statistically significant after adjusting for collinearity in the multi-pollutant model. Ozone was only statistically associated with respiratory mortality in females at lag 0 [RR: 0.964(0.938, 0.991)]. Conclusion This study provided evidence that respiratory mortality in Xi’an was significantly associated with exposure to ambient air pollutants from 2014 to 2016.

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Section: Discussionmentioning

confidence: 99%

Ambient air pollution and respiratory mortality in Xi’an, China: a time-series analysis

Mokoena

Ethan

et al. 2019

Respir Res

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“…The authors suspected that PM deposits differently and perhaps more harmfully in women's lungs compared to men's lungs [32]. However, a meta-analysis indicated that the association of PM 2.5 with lung cancer was stronger for men than for women [33], which was later con rmed by a 10-year time-series study [34]. Analyses of sex differences are more common in occupational epidemiology than in environmental health, because persistent job strati cation by sex has produced marked differences in occupational exposures to chemical agents, ergonomic demands, injury, and psychosocial stressors [9,35].…”

Section: Discussionmentioning

confidence: 99%

Sex differences in Associations of Fine Particulate Matter with Non-accidental Deaths: An Ecological Time-Series Study

Xia

Fang

Montgomery

et al. 2020

Preprint

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Background: Sex differences in the impact of exposure to air pollution have been reported previously and epidemiological studies indicate that fine particulate matter (PM2.5) effects on non-accidental death are modified by sex, however, the results are not conclusive. This study aimed to investigate the sex difference in the effects of PM2.5 on non-accidental death, considering the nonlinear exposure-response relationships between PM2.5 and smoking and death.Methods: Information on daily non-accidental deaths, air pollution, meteorological data, and smoking prevalence between 1 January, 2012 and 31 December, 2014 was obtained in Shanghai, China. Constrained generalized additive models were used to assess the association of interaction between sex and daily PM2.5 concentrations with daily non-accidental deaths, adjusting for weather type and smoking rate. A two-week lag analysis was conducted as a sensitivity analysis.Results: During the study period, the total number of non-accidental deaths in Shanghai was 336,379, with a daily mean of 163 deaths and 144 deaths for men and women, respectively. The average daily concentration of PM2.5 in Shanghai was 55.0 µg/m3 during the same time period. Older people and men showed a higher risk for non-accidental death (risk ratio (RR) = 1.025 per year increase in age, 95% confidence interval (CI): 1.021 – 1.029, and RR = 0.892 for women, 95% CI: 0.802 – 0.993, respectively). Compared with men, the risk for non-accidental death in relation to increasing PM2.5 concentration was smaller in women (RR = 0.998, 95% CI: 0.996 – 1.000, per 10 µg increase in PM2.5 concentration. The difference is consistent during the two lag weeks and more obvious when adjusting for the interaction between PM2.5 concentration and smoking prevalence.Conclusion: The effects of PM2.5 on daily non-accidental death are different between men and women in Shanghai, China, and women tend to have a lower risk. The underlying mechanisms of the sex difference of PM2.5 effects on death need further investigation.

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“…As the capital of Liaoning Province, Shenyang, located in the center of Northeast Asia and Bohai economic circle, along with the Liaodong Peninsula, is regarded as a comprehensive transportation hub connecting the Yangtze River Delta, Pearl River Delta and Beijing-Tianjin-Hebei to the Kanto region. The research on air pollution in Northeast China has been lacking in recent years, of which the ozone pollution in Shenyang was the most omitting related research covered from 2013 to 2017, methods included the characteristics and differences of basic concentration variations, the effects of meteorological elements and ozone precursors [20,21] and the pollution exposure effects on respiratory diseases and lung cancer mortality [22]. Considering the harsh ozone pollution in Shenyang, along with its special position, we set the study scope in the urban area of Shenyang, scientifically analyze and discuss the pollution situation, which is of great significance to reveal the pollution in typical areas.…”

Section: Study Areamentioning

confidence: 99%

“…The lockdown caused by the epidemic had a positive impact on environmental air and water quality [3]. Decreases in NO 2 levels over China during lockdown (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25) February 2020) compared to pre-lockdown (1-20 January 2020) were recognized by satellite data from NASA and the European Space Agency [4]. Concentrations of CO and NO 2 in Almaty, Kazakhstan reduced sharply by 49% and 35%, respectively, during the lockdown compared with the pre-lockdown, except O 3 levels mounted by 15% [5].…”

Section: Introductionmentioning

confidence: 99%

Assessing the Impact of Lockdown on Atmospheric Ozone Pollution Amid the First Half of 2020 in Shenyang, China

Wang

Fang

2020

IJERPH

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During the eruption of COVID-19, a citywide lockdown was executed from 26 January to 23 March 2020, in Shenyang, in which the ozone pollution has recorded significant variations. This paper mainly anatomized the comprehensive characteristics and evolution trends of ozone pollution based on the lockdown period in the first half of 2020. Using the Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model and cluster analysis method to establish backward trajectories and channels, the spatial transport process of ozone in the preset period and the causation of typical ozone pollution events were investigated in depth. The results demonstrated that: The ozone concentration pollution in the first half of 2020 was increased than last year. During the lockdown period, the basic pollutants levels were lower than that in pre-lockdown under different proportions, except O3 maximum 8-h moving average (MDA8) was increased by 69.7%, accompanied by the delay of daily peak value, increased pollution days and longer pollution cycle. The typical pollution events were highly consistent with the evolution path of fine aerosol compelled by extreme weather. The ozone concentration and the atmospheric oxidation capacity can be stably maintained at a low level when NO2 concentration remained at 50–70 μg/m3, no matter how much the AQI was. Meanwhile, ozone concentration in the downwind suburban was as low as the central city and soared in few stations amid post-lockdown, simultaneous the correlation between ozone and other pollutants converted from negative to positive. The trajectory indicated that the pollution sources during the lockdown and pre-lockdown were basically Southern Russia, Inner Mongolia, and the three provinces of Northeast China, the pollution from the Bohai Sea provoked ozone pollutants in Shenyang to rebound briskly amid post-lockdown, the pollution of neighboring countries and areas would have a stronger impact on air quality under the effect of lockdown.

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Temporal trends in respiratory mortality and short-term effects of air pollutants in Shenyang, China

Cited by 47 publications

References 45 publications

Ambient air pollution and respiratory mortality in Xi’an, China: a time-series analysis

Ambient air pollution and respiratory mortality in Xi’an, China: a time-series analysis

Sex differences in Associations of Fine Particulate Matter with Non-accidental Deaths: An Ecological Time-Series Study

Assessing the Impact of Lockdown on Atmospheric Ozone Pollution Amid the First Half of 2020 in Shenyang, China

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