Better air quality reduces respiratory symptoms among children in southern California

Wise, Jacqui

doi:10.1136/bmj.i2083

Cited by 3 publications

(3 citation statements)

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“…Particularly, air pollution was positively related to the pneumonia among children [17,18]. Besides, better air quality has been approved to reduce respiratory symptoms among children [19]. However, research about comprehensive comparison of respiratory health changes in children from different subgroups is still limited, especially in cities that suffer from heavy air pollution.…”

Section: Introductionmentioning

confidence: 99%

Association of air pollution with outpatient visits for respiratory diseases of children in an ex-heavily polluted Northwestern city, China

Liu

et al. 2020

BMC Public Health

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Background: A great number of studies have confirmed that children are a particularly vulnerable population to air pollution. Methods: In the present study, 332,337 outpatient visits of 15 hospitals for respiratory diseases among children (0-13 years), as well as the simultaneous meteorological and air pollution data, were obtained from 2014 to 2016 in Lanzhou, China. The generalized additive model was used to examine the effects of air pollutants on children's respiratory outpatient visits, including the stratified analysis of age, gender and season. Results: We found that PM 2.5 , NO 2 and SO 2 were significantly associated with the increased total respiratory outpatient visits. The increments of total respiratory outpatient visits were the highest in lag 05 for NO 2 and SO 2 , a 10 μg/m 3 increase in NO 2 and SO 2 was associated with a 2.50% (95% CI: 1.54, 3.48%) and 3.50% (95% CI: 1.51, 5.53%) increase in total respiratory outpatient visits, respectively. Those associations remained stable in twopollutant models. Through stratification analysis, all air pollutants other than PM 10 were significantly positive associated with the outpatients of bronchitis and upper respiratory tract infection. Besides, both NO 2 and SO 2 were positively related to the pneumonia outpatient visits. PM 2.5 and SO 2 were significantly related to the outpatient visits of other respiratory diseases, while only NO 2 was positively associated with the asthma outpatients. We found these associations were stronger in girls than in boys, particularly in younger (0-3 years) children. Interestingly, season stratification analysis indicated that these associations were stronger in the cold season than in the transition or the hot season for PM 10 , PM 2.5 and SO 2. Conclusions: Our results indicate that the air pollution exposure may account for the increased risk of outpatient visits for respiratory diseases among children in Lanzhou, particularly for younger children and in the cold season.

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Section: Introductionmentioning

confidence: 99%

Association of air pollution with outpatient visits for respiratory diseases of children in an ex-heavily polluted Northwestern city, China

Liu

et al. 2020

BMC Public Health

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“…Ozone (O 3 ) exposure would trigger bronchial inflammation and respiratory tract oxidative stress, which further causes many serious health problems (1,2) such as respiratory and lung-related diseases are very common (3)(4)(5)(6). Darrow et al and Wise explored the relationship between O 3 and respiratory health and provided their exposure-response coefficients but mainly in developed countries (7,8). Developing countries, such as China and India, however, face severe O 3 pollution and have a high population density (9,10).…”

Section: Introductionmentioning

confidence: 99%

“…Darrow et al and Wise explored the relationship between O 3 and respiratory health and provided their exposure-response coefficients but mainly in developed countries ( 7 , 8 ). Developing countries, such as China and India, however, face severe O 3 pollution and have a high population density ( 9 , 10 ).…”

Section: Introductionmentioning

confidence: 99%

Comparison of the association between different ozone indicators and daily respiratory hospitalization in Guangzhou, China

Wang

Zhang

et al. 2023

Front. Public Health

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BackgroundEpidemiological studies have widely proven the impact of ozone (O3) on respiratory mortality, while only a few studies compared the association between different O3 indicators and health.MethodsThis study explores the relationship between daily respiratory hospitalization and multiple ozone indicators in Guangzhou, China, from 2014 to 2018. It uses a time-stratified case–crossover design. Sensitivities of different age and gender groups were analyzed for the whole year, the warm and the cold periods. We compared the results from the single-day lag model and the moving average lag model.ResultsThe results showed that the maximum daily 8 h average ozone concentration (MDA8 O3) had a significant effect on the daily respiratory hospitalization. This effect was stronger than for the maximum daily 1 h average ozone concentration (MDA1 O3). The results further showed that O3 was positively associated with daily respiratory hospitalization in the warm season, while there was a significantly negative association in the cold season. Specifically, in the warm season, O3 has the most significant effect at lag 4 day, with the odds ratio (OR) equal to 1.0096 [95% confidence intervals (CI): 1.0032, 1.0161]. Moreover, at the lag 5 day, the effect of O3 on the 15–60 age group was less than that on people older than 60 years, with the OR value of 1.0135 (95% CI: 1.0041, 1.0231) for the 60+ age group; women were more sensitive than men to O3 exposure, with an OR value equal to 1.0094 (95% CI: 0.9992, 1.0196) for the female group.ConclusionThese results show that different O3 indicators measure different impacts on respiratory hospitalization admission. Their comparative analysis provided a more comprehensive insight into exploring associations between O3 exposure and respiratory health.

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Associations between daily outpatient visits for respiratory diseases and ambient fine particulate matter and ozone levels in Shanghai, China

Wang

Huang

et al. 2018

Environmental Pollution

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Better air quality reduces respiratory symptoms among children in southern California

Cited by 3 publications

References 0 publications

Association of air pollution with outpatient visits for respiratory diseases of children in an ex-heavily polluted Northwestern city, China

Association of air pollution with outpatient visits for respiratory diseases of children in an ex-heavily polluted Northwestern city, China

Comparison of the association between different ozone indicators and daily respiratory hospitalization in Guangzhou, China

Associations between daily outpatient visits for respiratory diseases and ambient fine particulate matter and ozone levels in Shanghai, China

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