Air pollution and hospital visits for acute upper and lower respiratory infections among children in Ningbo, China: A time-series analysis

Zheng, Pei-Wen; Wang, Jianbing; Zhang, Zhenyu; Shen, Peng; Chai, Ping; Li, Die; Jin, Mingjuan; Tang, Mengling; Lu, Huai-Chu; Lin, Hongbo; Chen, Kun

doi:10.1007/s11356-017-9279-8

Cited by 58 publications

(32 citation statements)

References 31 publications

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“…This may be mainly because of two reasons: first, children's low immune function makes them more susceptible to respiratory infections, and second, previous studies have shown that air pollution may lead to increased respiratory diseases in children. [8][9][10] The Global Burden of Disease 2013 study found that lower respiratory tract infections were the leading cause of hospitalization for children aged 0-19 years in most developing countries, and particularly among children younger than 5 years. 11 Many of the risk factors for respiratory diseases, such as household air pollution and low immunity, are avoidable through proper prevention and management.…”

Section: Discussionmentioning

confidence: 99%

Disease spectrum analysis of hospitalized children in China: A study of 18 tertiary children's hospitals

Feng

Tian

Wang

et al. 2019

Pediatric Investigation

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Importance Morbidity and mortality of children are important indicators of the performance of the public health system in any country. In China, the children's disease spectrum has gradually changed in recent years. However, the gender‐ and age‐specific disease spectrum for hospitalized children under 15 years old is still unclear. Objective To explore the gender‐ and age‐based distribution of diseases in hospitalized children under 15 years in China. Methods Medical records home page data for 2016 to 2018 were collected from 18 tertiary children's hospitals in China. The gender‐ and age‐specific disease spectrum was analyzed, using the tenth revision of the International Statistical Classification of Diseases and Related Health Problems (ICD‐10). Results The most common diseases were those of the respiratory system (25.7% of all 2 232 142 hospitalized children). The top three diseases for boys were diseases of the respiratory system (25.6%), diseases of the digestive system (11.4%) and certain conditions originating in the perinatal period (8.6%). The top three diseases for girls were diseases of the respiratory system (25.9%), certain conditions originating in the perinatal period (10.1%), and factors influencing health status and contact with health services (9.4%). The most common diseases for children under 1 year old were certain conditions originating in the perinatal period (38.1%). For all other age groups, the most common conditions were respiratory diseases (33.8% for those aged 1–3 years, 25.2% for those aged 4–6 years, and 12.2% for those aged 7–14 years). Interpretation This study analyzed the medical records home pages of 18 children's hospitals to provide the first overview of the disease spectrum and its gender‐ and age‐specific distribution among children in China.

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Section: Discussionmentioning

confidence: 99%

Disease spectrum analysis of hospitalized children in China: A study of 18 tertiary children's hospitals

Feng

Tian

Wang

et al. 2019

Pediatric Investigation

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“…This seasonal discrepancy may be explained by a higher level of air pollutants in cold period as Table 1 shows. Furthermore, residents may reduce time to go outdoors due to high temperature and frequent rain during warm seasons [ 17 ] thus the chance of exposure to ambient air pollution is relatively lower as compared with cold seasons.…”

Section: Discussionmentioning

confidence: 99%

Association between ambient air pollutants and preterm birth in Ningbo, China: a time-series study

Liu¹,

Qiu³

et al. 2018

BMC Pediatr

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BackgroundExposure to air pollutants has been related to preterm birth, but little evidence can be available for PM2.5, O3 and CO in China. This study aimed to investigate the short-term effect of exposure to air pollutants on risk preterm birth during 2014–2016 in Ningbo, China.MethodsWe conducted a time-series study to evaluate the associations between daily preterm birth and major air pollutants (including PM2.5, PM10, SO2, NO2, O3 and CO) in Ningbo during 2014–2016. A General Additive Model extend Poisson regression was used to evaluate the relationship between preterm birth and air pollution with adjustment for time-trend, meteorological factors and day of the week (DOW). We also conducted a subgroup analysis by season and age.ResultsIn this study, a total of 37,389 birth occurred between 2014 and 2016 from the Electronic Medical Records System of Ningbo Women and Children’s Hospital, of which 5428 were verified as preterm birth. The single pollutant model suggested that lag effect of PM2.5, PM10, NO2 reached a peak at day 3 before delivery and day 6 for SO2, and no relationships were observed for O3 and preterm birth. Excess risks (95% confidence intervals) for an increase of IQR of air pollutant concentrations were 4.84 (95% CI: 1.77, 8.00) for PM2.5, 3.56 (95% CI: 0.07, 7.17) for PM10, 3.65 (95% CI: 0.86, 6.51) for SO2, 6.49 (95% CI: 1.86, 11.34) for NO2, − 0.90 (95% CI: -4.76, 3.11) for O3, and 3.36 (95% CI: 0.50, 6.30) for CO. Sensitivity analyses by exclusion of maternal age < 18 or > 35 years did not materially alter our results.ConclusionsThis study indicates that short-term exposure to air pollutants (including PM2.5, PM10, SO2, NO2) are positively associated with risk of preterm birth in Ningbo, China.Electronic supplementary materialThe online version of this article (10.1186/s12887-018-1282-9) contains supplementary material, which is available to authorized users.

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“…Moreover, contrary to the study by Nhung, stronger associations were observed among older children [ 17 ]. Another study from China also found stronger associations in older children [ 18 ]. Despite mounting literature suggesting that air pollution may be associated with respiratory disease in children, information regarding the association remains limited.…”

Section: Introductionmentioning

confidence: 99%

Acute effects of ambient air pollution on outpatient children with respiratory diseases in Shijiazhuang, China

Song

Zheng

et al. 2018

BMC Pulm Med

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BackgroundAssociations between ambient air pollution and child health outcomes have been well documented in developed countries such as the United States; however, only a limited number of studies have been conducted in developing countries. This study aimed to explore the acute effects of five ambient air pollutants (inhalable particles [PM10], fine particles [PM2.5], sulfur dioxide [SO2], nitrogen dioxide [NO2] and 0zone [O3]) on children hospital outpatients with respiratory diseases in Shijiazhuang, China.MethodsThree years (2013–2015) of daily data, including cause-specific respiratory outpatient records and the concentrations of five air pollutants, were collected to examine the short-term association between air pollution and children’s respiratory diseases; using a quasi-Poisson regression generalized additive model. Stratified analyses by season and age were also performed.ResultsFrom 2013 to 2015, a total of 551,678 hospital outpatient records for children with respiratory diseases were collected in Shijiazhuang, China. A 10 μg/m3 increase in a two-day average concentration (lag01) of NO2, PM2.5, and SO2 corresponded to an increase of 0.66% (95% confidence interval [CI]: 0.30–1.03%), 0.13% (95% CI: 0.02–0.24%), and 0.33% (95% CI: 0.10–0.56%) in daily hospital outpatient visits for children with respiratory diseases, respectively. The effects were stronger in the transition season (April, May, September and October) than in other seasons (the hot season [June to August] and the cool season [November to March]). Furthermore, results indicated a generally stronger association in older (7–14 years of age) than younger children (< 7 years of age).ConclusionsThis research found a significant association between ambient NO2, PM2.5, and SO2 levels and hospital outpatient visits in child with respiratory diseases in Shijiazhuang, China.

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Air pollution and hospital visits for acute upper and lower respiratory infections among children in Ningbo, China: A time-series analysis

Cited by 58 publications

References 31 publications

Disease spectrum analysis of hospitalized children in China: A study of 18 tertiary children's hospitals

Disease spectrum analysis of hospitalized children in China: A study of 18 tertiary children's hospitals

Association between ambient air pollutants and preterm birth in Ningbo, China: a time-series study

Acute effects of ambient air pollution on outpatient children with respiratory diseases in Shijiazhuang, China

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