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| DOI | 10.1016/j.envpol.2024.123866 |
| Relationships between long-term exposure to major PM2.5 constituents and outpatient visits and hospitalizations in Guangdong, China | |
| 发表日期 | 2024 |
| ISSN | 0269-7491 |
| EISSN | 1873-6424 |
| 起始页码 | 348 |
| 卷号 | 348 |
| 英文摘要 | Ambient fine particulate matter (PM2.5) has attracted considerable attention due to its crucial role in the rising global disease burden. Evidence of health risks associated with exposure to PM2.5 and its major constituents is important for advancing hazard assessments and air pollution emission policies. We investigated the relationship between exposure to major constituents of PM2.5 and outpatient visits as well as hospitalizations in Guangdong Province, China, where 127 million residents live in a severe PM2.5 pollution environment. An approach that integrates the generalized weighted quantile sum (gWQS) regression with the difference-in-differences (DID) approach was used to assess the overall mixture effects and relative contributions of each constituent. We observed significant associations between long-term exposure to the mixture of PM2.5 constituents (WQS index) and outpatient visits (IR%, percentage increases in risk per unit WQS index increase:1.73, 95%CI: 1.72, 1.74) as well as hospitalizations (IR%:5.15, 95%CI: 5.11, 5.20). Black carbon (weight: 0.34) and nitrate (weight: 0.60) respectively exhibited the highest contributions to outpatient visits and hospitalizations. The overall mixture effects on outpatient visits and hospitalizations were higher with increased summer air temperatures (IR%: 7.54, 95%CI: 7.33, 7.74 and IR%: 9.55, 95%CI: 8.36, 10.75, respectively) or decreased winter air temperatures (IR%: 1.88, 95%CI: 1.68, 2.08 and IR%: 4.87, 95%CI: 3.73, 6.02, respectively). Furthermore, the overall mixture effects on outpatient visits and hospitalizations were significantly higher in populations with higher socioeconomic status (P < 0.01). It's crucial to address the primary sources of nitrate precursor substances and black carbon (mainly traffic-related and industrial-related air pollutants) and consider the complex interaction effects between air temperature and PM2.5 in the context of climate change. Of particular concern is the need to prioritize healthcare demands in economically disadvantaged regions and to address the health inequalities stemming from the uneven distribution of healthcare resources and PM2.5 pollution. |
| 英文关键词 | Outpatient visits; Hospitalizations; PM2.5 constituents; Difference -in -differences; gWQS |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| WOS记录号 | WOS:001221654300001 |
| 来源期刊 | ENVIRONMENTAL POLLUTION
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/305309 |
| 作者单位 | Sun Yat Sen University; Sun Yat Sen University; Sun Yat Sen University; Peking University; Peking University |
| 推荐引用方式 GB/T 7714 | . Relationships between long-term exposure to major PM2.5 constituents and outpatient visits and hospitalizations in Guangdong, China[J],2024,348. |
| APA | (2024).Relationships between long-term exposure to major PM2.5 constituents and outpatient visits and hospitalizations in Guangdong, China.ENVIRONMENTAL POLLUTION,348. |
| MLA | "Relationships between long-term exposure to major PM2.5 constituents and outpatient visits and hospitalizations in Guangdong, China".ENVIRONMENTAL POLLUTION 348(2024). |
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