Exploring the Modifying Role of GDP and Greenness on the Short Effect of Air Pollutants on Respiratory Hospitalization in Beijing

Author:

Zhang Jiawei1ORCID,Xu Zhihu2,Han Peien1,Fu Yaqun1,Wang Quan13ORCID,Wei Xia14,Wang Qingbo1,Yang Li1ORCID

Affiliation:

1. Department of Health Policy and Management Peking University School of Public Health Beijing China

2. Department of Occupational and Environmental Health Sciences Peking University School of Public Health Beijing China

3. Brown School Washington University in St. Louis St. Louis MO USA

4. Department of Health Services Research and Policy London School of Hygiene & Tropical Medicine London UK

Abstract

AbstractIt is unclear whether Gross Domestic Product (GDP) and greenness have additional modifying effects on the association between air pollution and respiratory system disease. Utilizing a time‐stratified case‐crossover design with a distributed lag linear model, we analyzed the association between six pollutants (PM2.5, PM10, NO2, SO2, O3, and CO) and 555,498 respiratory hospital admissions in Beijing from 1st January 2016 to 31st December 2019. We employed conditional logistic regression, adjusting for meteorological conditions, holidays and influenza, to calculate percent change of hospitalization risk. Subsequently, we performed subgroup analysis to investigate potential effect modifications using a two‐sample z test. Every 10 μg/m3 increase in PM2.5, PM10, NO2, SO2, and O3 led to increases of 0.26% (95%CI: 0.17%, 0.35%), 0.15% (95%CI: 0.09%, 0.22%), 0.61% (95%CI: 0.44%, 0.77%), 1.72% (95%CI: 1.24%, 2.21%), and 0.32% (95%CI: 0.20%, 0.43%) in admissions, respectively. Also, a 1 mg/m3 increase in CO levels resulted in a 2.50% (95%CI: 1.96%, 3.04%) rise in admissions. The links with NO2 (p < 0.001), SO2 (p < 0.001), O3 (during the warm season, p < 0.001), and CO (p < 0.001) were significantly weaker among patients residing in areas with higher levels of greenness. No significant modifying role of GDP was observed. Greenness can help mitigate the effects of air pollutants, while the role of GDP needs further investigation.

Funder

National Natural Science Foundation of China

Publisher

American Geophysical Union (AGU)

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