Evidence map›Paper›PMID 37391730›Full record

ArticleBMC public health2023

Urban-rural difference in the lagged effects of PM2.5 and PM10 on COPD mortality in Chongqing, China.

Aiping Gou, Guanzheng Tan, Xianbin Ding, Jiangbo Wang, Xiaoyan Lv, Chunyan Gou, Qiang Tan

Abstract read
In one paragraph

Article in BMC public health, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. RuralEuropean respiratory review : an official journal of the European Respiratory Society · 2026
    Pooled it
  2. Article
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  7. Residential Green and Blue Space, the Natural Environment, Genetic Susceptibility, and Incident COPD.International journal of chronic obstructive pulmonary disease · 2026
    Article
  8. Article
  9. Nationwide Machine Learning-Ensemble PMEnvironment & health (Washington, D.C.) · 2025
    Article
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  11. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Aiping GouCollege of Ecological Technology and Engineering, Shanghai Institute of Technology, Shanghai, 201418, China.
Guanzheng TanCollege of Ecological Technology and Engineering, Shanghai Institute of Technology, Shanghai, 201418, China.
Xianbin DingInstitute of Chronic and Non-communicable Disease Control and Prevention, Chongqing Center for Disease Control and Prevention, Chongqing, 400042, China. xianbinding@126.com.
Jiangbo WangCollege of Architecture, Nanjing Tech University, Nanjing, 211816, China. jumbo@njtech.edu.cn.
Xiaoyan LvInstitute of Chronic and Non-communicable Disease Control and Prevention, Chongqing Center for Disease Control and Prevention, Chongqing, 400042, China.
Chunyan GouDepartment of Acupuncture, Chongqing Traditional Chinese Medicine Hospital, Chongqing, 400021, China.
Qiang TanInstitute of Chronic and Non-communicable Disease Control and Prevention, Chongqing Center for Disease Control and Prevention, Chongqing, 400042, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIt is true that Chronic obstructive pulmonary disease (COPD) will increase social burden, especially in developing countries. Urban-rural differences in the lagged effects of PM2.5 and PM10 on COPD mortality remain unclear, in Chongqing, China.

methodsIn this study, a distributed lag non-linear model (DLNMs) was established to describe the urban-rural differences in the lagged effects of PM2.5, PM10 and COPD mortality in Chongqing, using 312,917 deaths between 2015 and 2020.

resultsAccording to the DLNMs results, COPD mortality in Chongqing increases with increasing PM2.5 and PM10 concentrations, and the relative risk (RR) of the overall 7-day cumulative effect is higher in rural areas than in urban areas. High values of RR in urban areas occurred at the beginning of exposure (Lag 0 ~ Lag 1). High values of RR in rural areas occur mainly during Lag 1 to Lag 2 and Lag 6 to Lag 7.

conclusionExposure to PM2.5 and PM10 is associated with an increased risk of COPD mortality in Chongqing, China. COPD mortality in urban areas has a high risk of increase in the initial phase of PM2.5 and PM10 exposure. There is a stronger lagging effect at high concentrations of PM2.5 and PM10 exposure in rural areas, which may further exacerbate inequalities in levels of health and urbanization.

Indexed as

Pulmonary Disease, Chronic ObstructiveChemokine CCL4ChinaHumansParticulate MatterUrbanizationChemokine CCL4Particulate MatterCOPDDLNMsLagged effectsPM10PM2.5Urban-rural differences

Identifiers

PMID37391730
PMCPMC10311728

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.