Association between short-term exposure to fine particulate pollution and outpatient visits for ulcerative colitis in Beijing, China: A time–series study

Duan, Ruqiao; Wu, Yao; Wang, Mengying; Wu, Junhui; Wang, Xiaowen; Wang, Zijing; Hu, Yonghua; Duan, Liping

doi:10.1016/j.ecoenv.2021.112116

Cited by 13 publications

(10 citation statements)

References 47 publications

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“…Due to people’s different physical qualities, their resistance to pollution is not always the same 5 . Individual characteristics (age, gender, figure and so on) have an effect on physical quality 6 , 7 . When estimating the critical value of pollutant concentration corresponding to safety and risk, individual situations of each volunteer should be analyzed.…”

Section: Introductionmentioning

confidence: 99%

Health risk assessment of PM2.5 on walking trips

Zhu

Liu

et al. 2021

Sci Rep

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PM2.5 has an impact on residents' physical health during travelling, especially walking completely exposed to the environment. In order to obtain the specific impact of PM2.5 on walking, 368 healthy volunteers were selected and they were grouped according to gender and age. In the experiment, the heart rate change rate (HR%) is taken as test variable. According to receiver operating characteristic (ROC) curve, the travel is divided into two states: safety and risk. Based on this, a binary logit model considering Body Mass Index (BMI) is established to determine the contribution of PM2.5 concentration and body characteristics to travel risk. The experiment was conducted on Chang'an Middle Road in Xi'an City. The analysis results show that the threshold of HR% for safety and risk ranges from 31.1 to 40.1%, and that of PM2.5 concentration ranges from 81 to 168 μg/m3. The probability of risk rises 5.8% and 11.4%, respectively, for every unit increase in PM2.5 concentration and HR%. Under same conditions, the probability of risk for male is 76.8% of that for female. The probability of risk for youth is 67.5% of that for middle-aged people, and the probability of risk for people with BMI in healthy range is 72.1% of that for non-healthy range. The research evaluates risk characteristics of walking in particular polluted weather, which can improve residents’ health level and provide suggestions for travel decision while walking.

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Section: Introductionmentioning

confidence: 99%

Health risk assessment of PM2.5 on walking trips

Zhu

Liu

et al. 2021

Sci Rep

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“…There was a low level of heterogeneity between the studies in both overall and subgroup analyses. Although the meta-analysis of three studies on air pollution was not performed [ 27 , 51 , 52 ], all three of the studies reported a significant positive correlation between air pollutants and exacerbation of IBD.…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, only 6 out of 20 studies reported information on the duration of IBD morbidity, location of lesions, or medications administered [ 20 – 24 , 50 ]. Moreover, 7 out of 20 studies did not report the number of patients who experienced IBD exacerbations [ 18 , 20 , 26 , 27 , 49 , 51 , 52 ], and 6 of the 11 studies reported different numbers of patients and cases of exacerbations [ 19 , 21 , 22 , 25 , 48 , 50 ]. The abovementioned factors might have resulted in the underestimation or overestimation of the pooled estimate results of the meta-analysis.…”

Section: Discussionmentioning

confidence: 99%

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Effects of temperature, weather, seasons, atmosphere, and climate on the exacerbation of inflammatory bowel diseases: A systematic review and meta-analysis

et al. 2022

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Background Exacerbation of inflammatory bowel disease (IBD) is common. Identification of the exacerbating factors could facilitate interventions for forecastable environmental factors through adjustment of the patient’s daily routine. We assessed the effect of natural environmental factors on the exacerbation of IBD. Methods In this systematic review and meta-analysis, studies published from January 1, 1992 to November 3th, 2022 were searched in the MEDLINE, Embase, CINAHL Complete and Cochrane Library databases. We extracted data related to the impact of environmental variations on IBD exacerbation, and performed a meta-analysis of the individual studies’ correlation coefficient χ2 converted into Cramér’s V (φc) with 95% confidence intervals (CI). Results A total of 7,346 publications were searched, and 20 studies (sample size 248–84,000 cases) were selected. A meta-analysis with seven studies was performed, and the pooled estimate of the correlation (φc) between the seasonal variations and IBD exacerbations among 4806 cases of IBD exacerbation was 0.11 (95% CI 0.07–0.14; I2 = 39%; p = 0.13). When divided into subtypes of IBD, the pooled estimate of φc in ulcerative colitis (six studies, n = 2649) was 0.07 (95% CI 0.03–0.11; I2 = 3%; p = 0.40) and in Crohn’s disease (three studies, n = 1597) was 0.12 (95% CI 0.07–0.18; I2 = 18%; p = 0.30). Conclusion There was a significant correlation between IBD exacerbation and seasonal variations, however, it was difficult to synthesize pooled results of other environmental indicators due to the small number of studies and the various types of reported outcome measures. For clinical implications, additional evidence through well-designed follow-up studies is needed. Protocol registration number (PROSPERO) CRD42022304916.

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“…A large number of epidemiological studies in the past few years selected data of outpatient visits as an index to measure the impact of pollutants on human health, and some researchers think that outpatient visits are the most sensitive indicator of health outcomes caused by air pollution, and accurately reflect the true health effects of air pollution (Duan et al, 2021;Guo et al, 2010;Li et al, 2021;Liu et al, 2017;Lu et al, 2020;Tian et al, 2017). Cardiovascular and cerebrovascular diseases have the same or similar causes, namely, biological risk factors (blood lipids, blood pressure, blood sugar, obesity), lifestyle risk factors (smoking, alcohol, diet, physical activity) and environmental risk factors (meteorology, air pollution and indoor air pollution).…”

Section: Introductionmentioning

confidence: 99%

Air pollution and outpatient visits for cardiovascular and cerebrovascular diseases: A time‐series analysis in Luoyang, China

Guo

Wang

Wei

et al. 2021

Meteorological Applications

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Previous studies have shown that air pollutants have a significant impact on cardiovascular and cerebrovascular diseases (CCD), but these studies have focused more on provincial capitals or large cities. This study was the first time to explore the effects of air pollutants on CCD in Luoyang. In this study, the generalized additive model (GAM) was used to establish a single-pollutant model, a multi-pollutant model and stratified modes of age, sex and season to evaluate the effects of PM 2.5 , PM 10 , SO 2 , NO 2 , CO and O 3 on outpatient visits for CCD within a week. The results of the single-pollutant model showed that PM 2.5 , PM 10 , SO 2 , NO 2 , CO and O 3 all had significant effects on the outpatient visits for CCD with a lag effect. The multi-pollutant model showed that there might be complex interactions among pollutants. The results of the stratified model showed that there was no significant difference in the effects of different pollutants on different genders and ages, and the results of seasonal stratification showed that PM 2.5 , PM 10 , SO 2 and CO had a greater influence on the outpatient visits for CCD in spring and summer, while NO 2 and O 3 had a greater influence on the outpatient visits for CCD in winter and summer, respectively.The results showed that air pollutants significantly affected outpatient visits for CCD, among which NO 2 had the greatest influence, and seasonal effects and the combined effects of various pollutants should be considered in strategies for the prevention of CCD.

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Association between short-term exposure to fine particulate pollution and outpatient visits for ulcerative colitis in Beijing, China: A time–series study

Cited by 13 publications

References 47 publications

Health risk assessment of PM2.5 on walking trips

Health risk assessment of PM2.5 on walking trips

Effects of temperature, weather, seasons, atmosphere, and climate on the exacerbation of inflammatory bowel diseases: A systematic review and meta-analysis

Air pollution and outpatient visits for cardiovascular and cerebrovascular diseases: A time‐series analysis in Luoyang, China

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