ArticleJournal of cleaner production2021
The impact of the COVID-19 outbreak on the air quality in China: Evidence from a quasi-natural experiment.
Article in Journal of cleaner production, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.
What it found
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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.
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.
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Who cites it
9 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Impact of COVID-19 Pandemic on Air Quality: A Systematic Review.International journal of environmental research and public health · 2022Pooled it
- Simultaneous Coproduction of Xylonic Acid and Xylitol: Leveraging In Situ Hydrogen Generation and Utilization from Xylose.ChemSusChem · 2025Article
- Concentration and size distribution of atmospheric particles in southern Italy during COVID-19 lockdown period.Atmospheric environment (Oxford, England : 1994) · 2023Article
- Short- and long-term impacts of the COVID-19 epidemic on urban PMAtmospheric environment (Oxford, England : 1994) · 2023Article
- The Spatial Association of Demographic and Population Health Characteristics with COVID-19 Prevalence Across Districts in India.Geographical analysis · 2022Article
- How does COVID-19 pandemic impact cities' logistics performance? An evidence from China's highway freight transport.Transport policy · 2022Article
- Spatio-temporal variation in fine particulate matter and effect on air quality during the COVID-19 in New Delhi, India.Urban climate · 2021Article
- Environmental spatial heterogeneity of the impacts of COVID-19 on the top-20 metropolitan cities of Asia-Pacific.Scientific reports · 2021Article
- Behavioural changes in transport and future repercussions of the COVID-19 outbreak in Spain.Transport policy · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The outbreak of coronavirus (COVID-19) in early 2020 posed a significant threat to people's health and economic sustainability in China and worldwide. This study investigated whether the lockdown measures precipitated by the COVID-19 pandemic affected air pollutants in the short term. Moreover, we investigated the impact of the heterogeneity of cities and regions. Using city-level daily panel data for the 2018-2020 lunar calendar, we employed a two-way fixed effects model and interrupted time-series analysis to inspect the effects of the lockdown measures. Interesting empirical findings emerged from our analysis. First, compared with the base period from 2018 to 2019, the COVID-19 lockdown measures significantly reduced air pollutants. In 2020, compared to 2018, PM
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Registered trials
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.