Associations between air pollution, climate factors and outpatient visits for eczema in West China Hospital, Chengdu, south‐western China: a time series analysis

Li, A.; Fan, Li; Xie, Lizhe; Ren, Yinshuan; Li, L.

doi:10.1111/jdv.14730

Cited by 59 publications

(69 citation statements)

References 50 publications

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“…Air pollutants were found to have harmful effects on AD in our study, which was consistent with previous studies . We compared our results with a very similar study done in Chengdu, south‐western China . As shown in Table , both our study and the study in Chengdu investigate the associations between air pollution and outpatients for AD (eczema) during 5 years.…”

Section: Discussionsupporting

confidence: 90%

“…However, different lag effect periods were found in previous studies and for different pollutants. The similar study in Chengdu, China found the greatest effects of air pollution at lag1 . The above panel study in Korea found the effects of PM10 were the greatest at lag0–5 (moving averages of 5 days) while the effects of NO 2 were the greatest at lag0 .…”

Section: Discussionmentioning

confidence: 62%

“…The similar study in Chengdu, China found the greatest effects of air pollution at lag1. 30 The above panel study in Korea found the effects of PM10 were the greatest at lag0-5 (moving averages of 5 days) while the effects of NO 2 were the greatest at lag0. 26 The lag periods between exposure to air pollution and exacerbation of AD and between exacerbation and visiting a doctor were influenced by lots of factors.…”

Section: Stratamentioning

confidence: 85%

“…12,[26][27][28][29] We compared our results with a very similar study done in Chengdu, south-western China. 30 As shown in Table 4, both our study and the study in Chengdu investigate the associations between air pollution and outpatients for AD (eczema) during 5 years. Time-series analysis was employed in the analysis of both studies to control the time trend.…”

Section: Discussionmentioning

confidence: 99%

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The interactive effects between air pollution and meteorological factors on the hospital outpatient visits for atopic dermatitis in Beijing, China: a time‐series analysis

Guo

Xiong

Liang

et al. 2019

Acad Dermatol Venereol

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Background The prevalence of atopic dermatitis (AD) dramatically increased over these years and environmental factors were considered as potential contributors towards these trends. Objective This study aimed to explore several major environmental exposures, including air pollution, temperature and relative humidity, in order to identify potential modifiable risk factors and their interactive effects on AD. Methods We applied a bivariate response surface model and stratification model based on time‐series Poisson generalized additive models to examine the interactive effects of air pollution and meteorological factors on AD. Results A total of 64 987 outpatient visits for AD were recorded from 1 January 2013 to 31 December 2017. Interactive effects were found between air pollutants and meteorological factors. Enhanced positive associations between pollutants and outpatient visits for AD were found at the highest quartile temperature level. A 10 μg/m3 increase in PM2.5, PM10, NO2 and SO2 were associated with 0.42% (95% CI: 0.16–0.67%), 0.34% (95% CI: 0.15–0.54%), 1.11% (95% CI: 0.38–1.84%) and 1.06% (0.21–1.93%) increase in outpatient visits for AD at the highest quartile temperature level. Conclusion That effects of air pollutants on AD can be modified by meteorological factors, with enhanced effects on hot days.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 62%

Section: Stratamentioning

confidence: 85%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

The interactive effects between air pollution and meteorological factors on the hospital outpatient visits for atopic dermatitis in Beijing, China: a time‐series analysis

Guo

Xiong

Liang

et al. 2019

Acad Dermatol Venereol

View full text Add to dashboard Cite

show abstract

“…This was found in a study from China, where the numbers of outpatient visits for eczema were compared to environmental conditions including air pollution, wind and humidity. It was found that both dryness, but also increased air pollution, led to an increase in eczema visits in ChengDu West China …”

Section: Environmental Influence On the Skinmentioning

confidence: 99%

Progress in Dermatology and Venereology – Editor's pick of the year 2018

Ring

2019

Acad Dermatol Venereol

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Association of Wildfire Air Pollution and Health Care Use for Atopic Dermatitis and Itch

et al. 2021

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IMPORTANCE Air pollution is a worldwide public health issue that has been exacerbated by recent wildfires, but the relationship between wildfire-associated air pollution and inflammatory skin diseases is unknown.OBJECTIVE To assess the associations between wildfire-associated air pollution and clinic visits for atopic dermatitis (AD) or itch and prescribed medications for AD management. DESIGN, SETTING, AND PARTICIPANTSThis cross-sectional time-series study assessed the associations of air pollution resulting from the California Camp Fire in November 2018 and 8049 dermatology clinic visits (4147 patients) at an academic tertiary care hospital system in San Francisco, 175 miles from the wildfire source. Participants included pediatric and adult patients with AD or itch from before, during, and after the time of the fire (October 2018 through February 2019), compared with those with visits in the same time frame of 2015 and 2016, when no large wildfires were near San Francisco. Data analysis was conducted from November 1, 2019, to May 30, 2020.EXPOSURES Wildfire-associated air pollution was characterized using 3 metrics: fire status, concentration of particulate matter less than 2.5 μm in diameter (PM 2.5 ), and satellite-based smoke plume density scores. MAIN OUTCOMES AND MEASURESWeekly clinic visit counts for AD or itch were the primary outcomes. Secondary outcomes were weekly numbers of topical and systemic medications prescribed for AD in adults.RESULTS Visits corresponding to a total of 4147 patients (mean [SD] age, 44.6 [21.1] years; 2322 [56%] female) were analyzed. The rates of visits for AD during the Camp Fire for pediatric patients were 1.49 (95% CI, 1.07-2.07) and for adult patients were 1.15 (95% CI, 1.02-1.30) times the rate for nonfire weeks at lag 0, adjusted for temperature, relative humidity, patient age, and total patient volume at the clinics for pediatric patients. The adjusted rate ratios for itch clinic visits during the wildfire weeks were 1.82 (95% CI, 1.20-2.78) for the pediatric patients and 1.29 (95% CI, 0.96-1.75) for adult patients. A 10-μg/m 3 increase in weekly mean PM 2.5 concentration was associated with a 7.7% (95% CI, 1.9%-13.7%) increase in weekly pediatric itch clinic visits. The adjusted rate ratio for prescribed systemic medications in adults during the Camp Fire at lag 0 was 1.45 (95% CI, 1.03-2.05). CONCLUSIONS AND RELEVANCEThis cross-sectional study found that short-term exposure to air pollution due to the wildfire was associated with increased health care use for patients with AD and itch. These results may provide a better understanding of the association between poor air quality and skin health and guide health care professionals' counseling of patients with skin disease and public health practice.

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Associations between air pollution, climate factors and outpatient visits for eczema in West China Hospital, Chengdu, south‐western China: a time series analysis

Abstract: This study provides evidence that environmental factors like relative humidity and multiple air pollutants influence the incidence and prevalence of eczema and have lagged effects.

Cited by 59 publications

References 50 publications

The interactive effects between air pollution and meteorological factors on the hospital outpatient visits for atopic dermatitis in Beijing, China: a time‐series analysis

The interactive effects between air pollution and meteorological factors on the hospital outpatient visits for atopic dermatitis in Beijing, China: a time‐series analysis

Progress in Dermatology and Venereology – Editor's pick of the year 2018

Association of Wildfire Air Pollution and Health Care Use for Atopic Dermatitis and Itch

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